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Who used the GSXR Throttle bodies?
Rob Lane - 7/1/05 at 10:45 PM

Someone posted pics of what they had done. Looked very nice but for life of me can't remember who.


paulf - 7/1/05 at 10:57 PM

It was in the diy fuel injection thread.
Im considering buying some, missed out on a few on Ebay .At the moment there are a lot advertised on Ebay by a bike breakers, apparently they imported a container load from the states due to the demand for them for cars. There are a number of differmt models on there from about £75 buy it now.
Paul.


stevebubs - 7/1/05 at 11:00 PM

'Twas probably me

http://gallery.cantcatchme.net/index.php?cat=9

[Edited on 18/10/06 by stevebubs]


Rob Lane - 7/1/05 at 11:08 PM

Dem's de ones !! Thanks for that.
I just wanted to check them as I've bought a set from ebay, from a gsxr600.


stevebubs - 8/1/05 at 01:21 AM

If you need any advice, shout.

The Gixxer 600 ones are a little smaller so will probably need a little more work to get mounted on the DCOE manifold.

Some rubber tubing should fix that, though.


Rob Lane - 8/1/05 at 09:36 AM

Should be making a custom inlet manifold that will accept them closer together.

Looking into having a couple of flanges laser cut.

Do you have a website ? What are you using for engine and ECU ?

I intend to use them on a 4age with Megasquirt.

Rob


Northy - 8/1/05 at 01:20 PM

Sorry to hi-jack your thread, but are these the ones that vitually fit straight onto an XE?

Cheers


James - 9/1/05 at 05:38 PM

I think it's the Blackbird ones that fit the XE.

HTH,
James


stevebubs - 9/1/05 at 06:02 PM

When I get round to it, the website will be at www.cantcatchme.net. Will be using an Emerald M3DK for the engine - was considering MS but have used the Emerald before so is a know quantity. Once running, I may shift the car to MS later and use the Emerald for something else though.

quote:
Originally posted by Rob Lane
Should be making a custom inlet manifold that will accept them closer together.

Looking into having a couple of flanges laser cut.

Do you have a website ? What are you using for engine and ECU ?

I intend to use them on a 4age with Megasquirt.

Rob


stevebubs - 9/1/05 at 06:03 PM

No. with a bit of respacing, the Gizzer 750 ones fit straight onto a DCOE manifold.

quote:
Originally posted by Northy
Sorry to hi-jack your thread, but are these the ones that vitually fit straight onto an XE?

Cheers


stevebubs - 9/1/05 at 06:13 PM

BTW I originally got the idea from looking at www.16vmini.co.uk


ady8077 - 13/1/05 at 07:05 PM

Hi Steve ( or anyone with gsxr bodies )

Just bought some 750 bodies off ebay, look identical to yours

You wouldn't happen to no what all the little rubber hoses are for?

Thanks Adrian


Volvorsport - 13/1/05 at 07:22 PM

do these throttle bodies fit straight on a weber 40/45 manifold ? - im building a plenum that will fit a weber pattern , you can fit a a single throttle body on there , bobs your uncle , or even bubs your uncle .


ady8077 - 13/1/05 at 07:37 PM

They will fit if you get the bikes original mount, i didn't

If you look at Steve's picture ( link page 1 ) you can see them

The beauty of the gsxr bodies is they are 4 individuals held together by a long threaded rod, so you can re space them. As standared they are 80mm apart

Adrian


Rob Lane - 13/1/05 at 07:46 PM

The hoses go to the MAP sensor for throttle vacuum/pressure sensing for ecu.

I also got a set of TBs but likewise didn't get the weber type rubbers. No problem though, just make manifold as tube without flange and use silicon hose and clamps as joints.

I have the 12mm ali plate, just need some ali tube of right dimension. I think the aerial stockists has some near me, it's used as aerial mast pole!


Rob Lane - 13/1/05 at 07:51 PM

This shows a good site here

http://members.home.nl/g.h.berkhoff/

as well as Steve's of course

[Edited on 13/1/05 by Rob Lane]


ady8077 - 13/1/05 at 08:18 PM

Hi Rob

Thanks for the link

As for the hoses, i thought one might be a map sensor but it also goes to a metal cylinder on the fuel rail, is this the pressure reg?

I also have a pair of hoses from the other side of the butterflies that link 2 bodies together

Thanks Adrian


stevebubs - 14/1/05 at 12:22 AM

Nope - that's a much better site than mine (he's used words for a start I'll get round to words, but probably not until the car is back on the road).

He's also been more adventurous and used the Gixxer 1000 'bodies with twin butterflies (ok he's removed the 2nd pair).

(If anyone's wondering, I believe the secondary butterflies are servo-driven and there to improve low end response. They also make an appearance on the Gixxer 600 'bodies)

TBH, If I'd gone to the extent of making up my own manifold, I'd probably have saved myself some work and left the spacing of the 'bodies standard. Would perhaps have meant unequal inlet tract lengths hence unequal characteristics of the cylinders, though.

quote:
Originally posted by Rob Lane
This shows a good site here

http://members.home.nl/g.h.berkhoff/

as well as Steve's of course

[Edited on 13/1/05 by Rob Lane]


stevebubs - 14/1/05 at 12:25 AM

For the plate, you may find that some of the tuning firms will sell you an inlet flange. Alternatively, get the original inlet manifold and introduce it to Mr Grinder

quote:
Originally posted by Rob Lane
The hoses go to the MAP sensor for throttle vacuum/pressure sensing for ecu.

I also got a set of TBs but likewise didn't get the weber type rubbers. No problem though, just make manifold as tube without flange and use silicon hose and clamps as joints.

I have the 12mm ali plate, just need some ali tube of right dimension. I think the aerial stockists has some near me, it's used as aerial mast pole!


stevebubs - 14/1/05 at 12:55 AM

DensoThingyOnGixxerFuelRail
DensoThingyOnGixxerFuelRail


I presume you mean this Denso Thingy? Is so then I'd assume it is the fuel regulator. As it's connected to the hoses and is part of the fuel return line, I'd guess it varies the Fuel Pressure according to the Manifold Vacuum. If so, then that's smart but surely it could be more accurately controlled with FI?

There's a further T-Piece just before it, and I guess the output from that goes to the MAP sensor

*However* an increase in fuel pressure allows the injectors to flow more but be open for the same amount of time. Perhaps it's a mechanism to squeeze a slightly wider range of fuel delivery out of the injectors?

Can anyone shed any concrete light on this?

quote:
Originally posted by ady8077
Hi Rob

Thanks for the link

As for the hoses, i thought one might be a map sensor but it also goes to a metal cylinder on the fuel rail, is this the pressure reg?

Thanks Adrian


[Edited on 14/1/05 by stevebubs]

[Edited on 14/1/05 by stevebubs]


stevebubs - 14/1/05 at 01:00 AM

Odd...I don't have these on mine...just the 4 joined up ones on the manifold side of the butterflies.

quote:
Originally posted by ady8077
Hi Rob

I also have a pair of hoses from the other side of the butterflies that link 2 bodies together

Thanks Adrian


[Edited on 14/1/05 by stevebubs]


Rob Lane - 14/1/05 at 09:32 AM

That's the fuel pressure reg alright. It should be on the return to tank with a connection to another device via vacuum tube.
Pressure created by pump in fuel rail is vented back to tank when 'over' or full closed when 'under' pressure. This occurs usually when under full accelleration and full backed off.
Helps keep a steady fuel pressure.

The 600 bodies I have has the secondary butterflies. The operation of which is unclear but I'm assuming it's a dampening system to prevent sudden 'snap open' of primaries and a weakening of mixture and stalling hiccup.
I think the stepper type motor is controlled by ecu and provides a smoothing out of the transition when throttle is opened suddenly. Bit like a damped acceleration enrichment, which can't be accomodated in the FI.
I'm assuming it's a quick device of course but not as quick as to spoil performance.

I intend to remove it from my TBs.

Incidentally what are you doing for cold start enrichment ?

Adrian,
I'll have a look at my Tbs to see if the same connection pipe is there.

You do tend to get funny little things like this which are added to cut out some anomaly or other in the performance at cold, accelerating, or on overrun etc.

[Edited on 14/1/05 by Rob Lane]


stevebubs - 14/1/05 at 09:47 AM

My Emerald has settings for cold start enrichment, so just going to use those...

quote:
Originally posted by Rob Lane

Incidentally what are you doing for cold start enrichment ?



ady8077 - 14/1/05 at 08:25 PM

Thanks for confirming its the pressure reg, any idea what presure it runs at?

I'm hoping the standard injectors will be ok, i'm fitting them to my pinto and after head mods hope to see about 160 bhp

As for cold start, mine have an extra connection on the throttle arm that when moved opens the throttle a couple of mm. Would this be for solenoid?

Adrian


Rob Lane - 14/1/05 at 10:09 PM

Adrian,

I don't have the extra rubber tube, just the 4 MAP ones.

I don't know what pressure the fuel rail as normal would run at, again I don't have the reg just a dead end rail.

I don't think the injectors would cope with your fuel requirements for 1600cc or above, they are for 600cc bike engine if GSXR 600.
I won't have that problem as I'm using 4age where injectors are in the head, I will blank off the TBs.

Also, Arghhh, no-one mentioned the intermediate throttle balance springs were not held in anything. Spent 30 mins looking for them when they sprung out.

I've taken the motor/solenoid off the second butterflies. Peculiar item, couldn't make out if it was a solenoid coil or motor.
Hefty magnets on the spindle end and the way it's wound suggested a solenoid.

I now have the TBs stripped and will be making up the relevant blanking plugs.

I also noticed a third cable on underside of crank arm that opens throttle a mm or so. This must be a choke/fast idle cable.

I see on Ebay that prices have doubled for Tbs now!

[Edited on 14/1/05 by Rob Lane]


paulf - 14/1/05 at 10:33 PM

I called a breakers today and as soon as i said i wanted a set of gsxr 750 bodies for a car he said £180 +vat and non negotiable.Needless to say i didnt bother.
I am now thinking about my original plans to make patterns and get some cast , I can machine them myself but have to decide on what bore size to use.
It seems as if i may be able to produce them for a price in the region of £200 a set for the basic bodys plus the linkage.They would be individual bodys with weber flange sizes, and an air bleed adjuster on each one.
Paul.

quote:
Originally posted by Rob Lane
I see on Ebay that prices have doubled for Tbs now!

[Edited on 14/1/05 by Rob Lane]


ady8077 - 14/1/05 at 10:40 PM

Hi Guys

Thank for the help, I'll dig the camera out tomorrow and see if i can upload a pic

As for prices i got mine off ebay £75 this week, the same sellers got some more

ebay item 7946290246

Adrian

forgot to say mine are 750's have to try and find out about injectors

[Edited on 14/1/05 by ady8077]


Browser - 14/1/05 at 10:57 PM

For info, I asked one breaker what bore size the 750 bodies are and the reply was 42mm. I know from previous chat on this that the 1000 bodies are 44mm dia.


DEAN C. - 14/1/05 at 11:17 PM

Adrian,thanks a lot for telling everyone and his dog about the item I happen to have the highest bid on.
Unless you are are willing to pay £150 + dont bother bidding against me as they're exactly what i'm after.
Anyone play poker?
I'll warn you I used to make a living buying cars at auction every week!


MikeRJ - 15/1/05 at 12:32 AM

quote:
Originally posted by DEAN C.
Adrian,thanks a lot for telling everyone and his dog about the item I happen to have the highest bid on.
Unless you are are willing to pay £150 + dont bother bidding against me as they're exactly what i'm after.
Anyone play poker?
I'll warn you I used to make a living buying cars at auction every week!


Then you'll know when to give up if some fool goes into a bidding frenzy!


DEAN C. - 15/1/05 at 01:10 AM

Bring it on!


DEAN C. - 15/1/05 at 01:12 AM

I'll let you know the results!


stevebubs - 15/1/05 at 03:10 PM

quote:
Originally posted by ady8077
Hi Guys

Thank for the help, I'll dig the camera out tomorrow and see if i can upload a pic

As for prices i got mine off ebay £75 this week, the same sellers got some more

ebay item 7946290246

Adrian

forgot to say mine are 750's have to try and find out about injectors

[Edited on 14/1/05 by ady8077]


Standard Car injectors can be fitted, but you'll need to remount the fuel rail.

Stephen

PS The US Ebay Site is where I got mine from - less than £100 *including* shipping from the US.


stevebubs - 15/1/05 at 03:15 PM

quote:
Originally posted by Rob Lane

I don't think the injectors would cope with your fuel requirements for 1600cc or above, they are for 600cc bike engine if GSXR 600.
[Edited on 14/1/05 by Rob Lane]


You be surprised - don't forget that they are designed to flow much faster due to the bike engine revving much higher, e.g. a if Gixxer 600 has a redline of 11k RPM then you'll be able to run a 1200cc car engine at 5.5k RPM without stressing the injectors anymore than they are in the bike.

(PS don't actually know what the Gixxer engine max RPM is)


Northy - 15/1/05 at 04:22 PM

Right guys, I could do with some advice. Which would be the better throttle bodies to fit to an xe? GSXR, Blackbird, or other? Anyone know any websites where someone has done this to an xe?

You've got me thinking now guys......

Cheers


ady8077 - 15/1/05 at 04:50 PM

HI

Have a look at

http://www.jenvey.co.uk/~Tech_QA.htm

The gsxr ones are tappered, mine are 48mm in, 42mm butterfly and 40mm out

Adrian


Rob Lane - 15/1/05 at 08:43 PM

I'm still waiting for my Megasquirt kit to turn up. I've already done one but sold it all, now I will build another and program it with MS Extra for the Toyota. This will have cold start and other more desirable items in it!


I've searched on gixxer injectors and found the value as 95cc for the GSX-R600.

This is well down compared to the 4age car engine which has 200cc injectors. Most engines have an average around 250cc and are uprated for tuned applications.

I've also found this blurb :-

Quote-----

"Peak torque is now listed as 3 percent stronger. This is achieved in part

by the use of a new fuel injection system, which is 370 grams lighter

than last year's. Where the 03 used four, single-barrel throttle bodies,

the 04's feature dual, double-barrel units with Suzuki Dual Throttle Valve

(SDTV). Containing two butterfly valves inside the throttle body, the

primary is controlled by the rider, the secondary by the bike's smaller,

lighter Electronic Control Module (ECM). Reading information from

sensors located on the crankshaft, the gearbox and the throttle, the

ECM uses a stepping motor. This opens and closes this secondary

butterfly, depending on the engine rpm, the gear position, or how much

throttle the rider is dialing in. The result is a feel that is similar to that of

CV carburetors, allowing the bike to pull strongly from as low as 6000

rpm. Pretty amazing when you think it revs to 15500 rpm!"
---------End quote

That explains the dual butterflies then


ady8077 - 15/1/05 at 10:36 PM

From searching the web a gsxr 750 can have anything from 120 to 141 bhp, i'm only hoping to get my pinto to 150 so i'm hoping mine are from the more powerfull ones

As for your's Rob have you seen

http://venus.13x.com/roadracingworld/issues/apr00/gsxr.htm

Theres a good diagram of how the twin butterfies work

Adrian


Rob Lane - 16/1/05 at 09:42 AM

Bears out what I said on my original post regarding smooth transition when throttle opened, even mentioned accelerator pump enrichment.

I looked at the 'motor' and thought it must be current variable, I didn't see it as a stepper motor but a linear version of same.

I'm making up some ali blanking plugs to fill in the injector ports and the butterfly spindle holes.


paulf - 16/1/05 at 04:53 PM

Ive just won a set of gpz1100 throttle bodies on Ebay.I didnt know what bore they were but have just established that they are 34mm bore and fitted with 180cc injectors. Any views on whether they will be ok on my lightly tuned 1600 crossflow?
They do seem to be very popular for bike conversions as they are easily split, the injectors are the same as nissan 200sx.
Paul.


ady8077 - 16/1/05 at 06:03 PM

Hi Paul

Depends on what bhp your after

I was recomended 300cc's for 200 bhp

Adrian


ady8077 - 16/1/05 at 06:06 PM

Does anyone no what other car injectors will fit the gsxr bodies?

Just been told on the sevens list that mine are likely to be 190cc, which is a bit small for 150+ bhp

I've been recommended 250cc+

Thanks Adrian


stevebubs - 16/1/05 at 06:07 PM

I believe Claire Rule on the BEC list ran her Crossflow on these 'bodies without any problems. IIRC, Nissan 200SX goes around 160ish BHP so you should be fine.

quote:
Originally posted by paulf
Ive just won a set of gpz1100 throttle bodies on Ebay.I didnt know what bore they were but have just established that they are 34mm bore and fitted with 180cc injectors. Any views on whether they will be ok on my lightly tuned 1600 crossflow?
They do seem to be very popular for bike conversions as they are easily split, the injectors are the same as nissan 200sx.
Paul.


stevebubs - 16/1/05 at 06:09 PM

I'm fitting Cossie Blue Injectors with Jenvey rail to my respaced Gixxer750 'bodies.

If you're not respacing then you can probably use the original fuel rail with these, but you'll need to alter the mounts to relocate the rail for the injector inlets.



quote:
Originally posted by ady8077
Does anyone no what other car injectors will fit the gsxr bodies?

Just been told on the sevens list that mine are likely to be 190cc, which is a bit small for 150+ bhp

I've been recommended 250cc+

Thanks Adrian


stevebubs - 16/1/05 at 06:11 PM

BTW I think the rough rule of thumb is divide by 5 then multiply by the number of cylinders to get the expect engine power.

190cc/5=38
38*4 =152bhp

[Edited on 16/1/05 by stevebubs]


ady8077 - 16/1/05 at 06:35 PM

Hi Steve

Found an sizing calc on the web, but that siad 125 bhp?

As for cossie blue's aren't they a bit big? my DT cat says their 437cc's

Also do they fit the bodies ok? I still have my old pinto injectors and their to big for the hole

Adrian


stevebubs - 16/1/05 at 06:58 PM

I'm going by a rule of thumb that I know people use. I'm sure there's other, better, more scientific ways (which you calculator is probably using) (bearing in mind divide by 5 multiply by cylinders doesn't take into account where in the rev range the peak power is.)

Light Blues are 400+ccs and are part of a stage 3/4 upgrade.

Dark Blues and Yellows are good for approx 200-250bhp. Think they're about 300cc.


WRT fitting, the blues fitted my GSXR750 rail/inlet holes without any issues (see pics on Page 1). However, the seal is created by the rubber O-Ring. Different sizes of o-ring may allow them to fit your bodies and rail without drama.


stevebubs - 16/1/05 at 07:07 PM

BTW I am not an expert on this...just relaying bits I've picked up over the last couple of years.

I'd definitely ask the same questions on the Megasquirt forums at http://www.msefi.com/. There's a number of *real* experts there!

Good article on injector sizing here

Looks like you're right - you'll either need slightly bigger injectors for 150bhp, or run the fuel rail at a slightly higher pressure than normal.

Stephen

[Edited on 16/1/05 by stevebubs]


ady8077 - 16/1/05 at 07:34 PM

Just cheaked your pics, they fit the same, thought the O ring had to go in more?

Dont worry I no your not an expert

But its nice to follow someone elses lead

Looks like dark blue cossy's then

Adrian


stevebubs - 16/1/05 at 07:50 PM

quote:
Originally posted by ady8077
Just cheaked your pics, they fit the same, thought the O ring had to go in more?

Dont worry I no your not an expert

But its nice to follow someone elses lead

Looks like dark blue cossy's then

Adrian


So long as you have a good seal then you should be OK.


Rob Lane - 17/1/05 at 09:47 AM

Just watched ebay for Dean C, he had a bid on the TBs and won at his original bid.

I noticed other 'overpriced' breakers sets end without a bid.

Seems like a backlash on the charge more breakers prices

Can't blame them trying to make a buck but the prices have nearly reached half of new car version prices. Doesn't seem worth it then does it ?


paulf - 17/1/05 at 01:42 PM

I called that breakers before christmas, he told me they had just sold a set of 750 bodies for £100 but would be getting in loads more as lots of people are asking for them for cars. He told me that he was importing a container load from the states.
How ever the price has now nearly doubled.Maybe once the rush for them has died down the prices will drop again.
My GPZ1100 bodies cost me £39 including delivery and im sure that they will be ok to start with .Theres also not as many unwanted parts to remove from them.
Paul.

quote:
Originally posted by Rob Lane
Just watched ebay for Dean C, he had a bid on the TBs and won at his original bid.

I noticed other 'overpriced' breakers sets end without a bid.

Seems like a backlash on the charge more breakers prices

Can't blame them trying to make a buck but the prices have nearly reached half of new car version prices. Doesn't seem worth it then does it ?


DEAN C. - 17/1/05 at 07:42 PM

YES! got my throttle bodies as Rob says,£84 + 10 p&p
Local breakers were quoting £120 just for the bodies without injector rail.
I really wanted the Gsxr bodies due to the ease of spacing them up.
If anyone has used other bodies it might help to keep TB prices down by saying which others are ok to use and therefore not putting a premium on gsxr TB's.
On ebay now they are up to £150 minimun
bid for 1000 and 1300 Gsxr TB's.


DEAN C............


Northy - 17/1/05 at 08:01 PM

What can I use on an XE?


stevebubs - 17/1/05 at 09:09 PM

quote:
Originally posted by Northy
What can I use on an XE?


See www.16vmini.co.uk for how to use the Gixxer 750 ones.

However, I think some-one mentioned that one set (blackbird?) 'bodies could be mounted direct to the head. Can anyone enlighten further?


ady8077 - 17/1/05 at 09:11 PM

Hi Graham

I'd have thought gsxr 750's would be ok for a vx, their 48mm tapering to 40mm

The jenvey site says 40mm is ok for 50 bhp per cylinder, you will have to respace them, sort out a manifold or buy the suzuki mounts, fit higher flowing injectors and make a new fuel rail

Adrian


Rob Lane - 20/1/05 at 04:44 PM

Well, got the Megasquirt ECU built and running on the simulator. Next step is making up leads for it.

I tried buying some ali tube today from an aerial shop for the manifold. It was in imperial 1 and a 1/2 inch. Got it back aond unfortunately it is too small. It seems I need something close to 1 and 3/4 inch.


Peteff - 20/1/05 at 05:35 PM

Aluminium scaffold tube might be alright for you. I have a piece that I use for a lever and it's 50mm external 37mm internal. Get round the building site.


Rob Lane - 20/1/05 at 06:48 PM

That may just be the stuff. It will allow me to turn down the external diameter to suit the manifold.


Northy - 20/1/05 at 07:08 PM

Looks like I'll get some GSXR 750 ones if no one knows about the Blackbird jobbies.

Cheers


paulf - 20/1/05 at 09:06 PM

I also tried buying some last week and found that it only comes in imperial sizes from metal stockists.I needed 40mm od with 34 id and eventually found that RS sell some that exact size in the catalog listed as hand rail material, it is in the section with structural extrusions for guards etc.
Paul.

quote:
Originally posted by Rob Lane
That may just be the stuff. It will allow me to turn down the external diameter to suit the manifold.


Rob Lane - 21/1/05 at 10:54 AM

I'm going to slow down Paul, I just went out to garage to check the tube. What a mess, too many projects on go at once !!!!

I need tube that once squashed oval at one end is 50mm x 32mm ID. That's the manifold end.
The TB end is 38mm ID round and 42mm OD.

Tricky one this!


DEAN C. - 22/1/05 at 12:05 AM

At least your garage is as messy as mine now


stevebubs - 22/1/05 at 01:42 AM

quote:
Originally posted by DEAN C.
At least your garage is as messy as mine now


During the rewire last year, mine got so messy it spread down the drive...

http://www.locostbuilders.co.uk/upload/Dash%20035.jpg


James - 24/1/05 at 03:44 PM

quote:
Originally posted by Northy
Looks like I'll get some GSXR 750 ones if no one knows about the Blackbird jobbies.

Cheers


Graham,

Can't remember if I posted this before:

http://www.migweb.co.uk/forums/showthread.php?t=123424

The pictures has gone but see if you can give this guy a mail and get hold of them again.

HTH,
James


ned - 24/1/05 at 05:09 PM

same bloke and missing pictures on this forum too: http://www.valvers.com/phpBB2/viewtopic.php?t=157

Ned.


Rob Lane - 25/1/05 at 09:16 AM

Bit of progress.

Went to Newark autojumble on Sunday and picked up some perfect ali tube.
It's 1 3/4 inch OD and will crush down to an oval that fits the inlet perfect. The inner bore matches the TBs exactly too.

I have roughed out the manifold flange in 12mm ali and it just needs smoothing off.
Next is getting the tubes welded in position.

The Megasquirt n Spark Extra is loaded into the unit and after a few trials it is now working correctly on the simulator.
Should be a direct fit to harness adapter which will allow the Toyota engine to run directly with no mods.

I saw a couple of bike TBs sets at Newark but the prices were stupidly expensive for not very good condition items. Circa 175 pounds!! With just the tubes, nothing else!


paulf - 25/1/05 at 10:54 PM

I finally got my GPZ1100 bodies today, they are 35mm bore so only suitable for smaller engines but look easy to fit and use standard car injectors.
The spacing of the middle pair is within 1mm of the crossflow cylinder head ports, but the outside pair are 20mm to close together.
I need to decide if i am going to split them or make a manifold in which the two outer ports taper in to match the throttle body spacing .I know the ideal is to have a straight line to the head but would I loose a lot of performance potential by having the outer runners tapering in by 20mm?
They will mount with 40mm rubber hose onto a plain 40mmm stub, i also intend to make an airbox with integral ram pipes mounted to the bodys to gain some intake length.
Paul.
[quoteIf anyone has used other bodies it might help to keep TB prices down by saying which others are ok to use and therefore not putting a premium on gsxr TB's.
On ebay now they are up to £150 minimun
bid for 1000 and 1300 Gsxr TB's.


DEAN C............



ady8077 - 26/1/05 at 07:15 PM

HI all

I'm planning on fitting my TB's inplace of my twin dcoe's and i'm making some mounts to attatch to the manifold

As i cannot weld ally i've used some 25mm thick ally and 2 hole saws one 44mm for the hole and one 57mm to leave a 54mm tube

Thought it might help others, as i had the hole saws each mount has only cost £3.50, still got to file them up but heres a picture



Adrian Rescued attachment TBs2.jpg
Rescued attachment TBs2.jpg


Rob Lane - 27/1/05 at 08:25 AM

Took a minute to work that one out but what a neat idea

Makes the flanges and joining tube easy.

I needed a full inlet flange setup for the head for the tubes to weld to. I need to check whether straight tube will work or whether I have to fit curved piece of hose to lift TBs above tube R on chassis.

I have to come out from head a small distance in order to clear fuel rail, it's fastened to head on a Toyota so it's easier than making one for TBs.


Rob Lane - 27/1/05 at 04:31 PM

Took the completed manifold flange and the shaped tubes to Martin at MK Engineering today.

He welded them up for me and produced the artistic masterpiece below :- Rescued attachment TBsManifold.jpg
Rescued attachment TBsManifold.jpg


Rob Lane - 27/1/05 at 04:31 PM

Another view :- Rescued attachment TBsManifold2.jpg
Rescued attachment TBsManifold2.jpg


James - 27/1/05 at 04:49 PM

Looks really great Rob.

James


ned - 27/1/05 at 04:56 PM

not quite as good as pauls stainless exhausts though


James - 27/1/05 at 05:03 PM

quote:
Originally posted by ned
not quite as good as pauls stainless exhausts though


Not Titanium?

Nowhere near as good as my steel one though!

James

[Edited on 27/1/05 by James]


ady8077 - 27/1/05 at 05:37 PM

quote:
Originally posted by Rob Lane
Took a minute to work that one out but what a neat idea

Makes the flanges and joining tube easy.

I needed a full inlet flange setup for the head for the tubes to weld to. I need to check whether straight tube will work or whether I have to fit curved piece of hose to lift TBs above tube R on chassis.

I have to come out from head a small distance in order to clear fuel rail, it's fastened to head on a Toyota so it's easier than making one for TBs.


Hi Rob

I tried to make the picture smaller, but instead managed to reduce the resolution

Yours looks great, are you planning on making a bracket to hold the TB's too, or just let the rubber hoses take the weight?

Adrian


Rob Lane - 27/1/05 at 08:05 PM

I've actually shortened the tubes now to the correct length for the space I have.

There are small two bolt flanges on inlet side of each TB, I will look at some kind of support if necessary but at moment it seems OK on the weight.

I turned up some ali bar to make plugs for each injector port on TB but made classic beginners mistake and took one last turn, forgetting it was twice the cut Now I have dead fit plugs.

I think I will turn them down further and use them for spindle plugs and make some more from rest of bar

I always use 'export jpg' for compression and 'reduce image' for sizing. That's in Paint Shop Pro 7

[Edited on 27/1/05 by Rob Lane]


Northy - 28/1/05 at 09:20 PM

Are these the right ones?

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=10534&item=7949802022&rd=1&ssPageName=WDVW

If they are, they're mine!


ady8077 - 28/1/05 at 10:11 PM

They look the same as mine

But ask the seller the bore size to be sure, you'll have to change injectors though

Adrian


Northy - 29/1/05 at 10:15 AM

Cheers Adrian,

What injectors are you fitting? Do std car ones fit these?

Are you making your own fuel rail?

Are they easy to split? Its hard to see from the picture? Do you have any pictures of what you've done to yours?

Could I ask any more questions in one post?


stevebubs - 29/1/05 at 11:45 AM

quote:
Originally posted by Northy
Cheers Adrian,

What injectors are you fitting? Do std car ones fit these?

Are you making your own fuel rail?

Are they easy to split? Its hard to see from the picture? Do you have any pictures of what you've done to yours?

Could I ask any more questions in one post?


See my first post in this thread for a link to some pics.

Injectors I'm using are Standard Sierra Cosworth.

fuel rail is a standard Jenvey item


ady8077 - 29/1/05 at 02:56 PM

quote:
Originally posted by Northy
Cheers Adrian,

What injectors are you fitting? Do std car ones fit these?

Are you making your own fuel rail?

Are they easy to split? Its hard to see from the picture? Do you have any pictures of what you've done to yours?

Could I ask any more questions in one post?


I'm hoping to use injectors from a fiesta rs turbo, won some off ebay last week but there not here yet. Supposed to flow 240cc's which is ok for about 150 bhp. For an xe you'd be better off with cossies

I'm going to try making a fuel rail with some 30mm x 20mm solid ally bar, an 8mm hole drilled through it and a pair of hose tails screwed in each end

I haven't split mine yet, but its only a case of undoing a couple of bolts

Hope this helps

Adrian


Northy - 29/1/05 at 09:59 PM

Just found this on the Racecar forum:

<
You may want to wait a few months, some of the 2005 bikes are now going to be fitted with oval bodies which apparently (or so Kawasaki claim for their new 600), are 20% more efficient than a round body. Won't be long before a few of them are thrown down the road. Since the bodies won't fit anything else, they should be relatively cheap.
>


Ben Smith - 6/2/05 at 03:08 PM

Hi all.
I have been watching this post with interest and have decided to join the fun! I have just bought some gsxr 600 t/b's off ebay and will be fitting these to a 4AGE engine. I have noticed several other using this engine. Has anybody found suitable injectors for this engine and t/b set up? I think cosworth injectors may be a little big. They will be fitted in the t/b as the ports in the head have been tapped and plugged from when the engine had carbs! The car is a Raw Striker fitted with there trac pac 1 kit. Expected power is approx 160bhp.

Thanks in advance.

Ben.


Rob Lane - 6/2/05 at 07:45 PM

The Toyota injectors will just fit with a bit of fettling and a new O ring.

Any of the 'green' injectors from a late model 4 age are OK, the minimum from them is 250cc and go up to 315cc. The 250cc are good for 50 bhp each.

Does your Omex have fuel too? I'm assuming you have that from the Tracpac.
If not they charge for upgrade from ignition only.


jonno - 6/2/05 at 07:57 PM

anyone else seen this ??

http://boardroom.wscc.co.uk/cgi-bin/ikonboard.cgi?s=1413842d751c3cb7ee47bd8617439db5;act=ST;f=3;t=24167


Ben Smith - 6/2/05 at 08:13 PM

Rob,
At present the car has an omex 100 ecu (for carbs). I have yet to speak to Richard at omex but having spoken to Mel when I was at Raw last week he said he would sort out an Omex 500 ecu either by exange or upgrade. Not exactly sure which, it was only an idea last week! The current omex sytem has been great with good technical support from Richard and his team.
The long list of jobs now starts! Biggest of which I think is going to be removing fuel tank for swirl pot to be fitted and fitting extra fuel line!Do you know what your inlet tube was from in the end?

Ben.


Rob Lane - 7/2/05 at 09:15 AM

Ben,

no idea on inlet tube, I just bought some offcuts from the ali guy at Newark Autojumble.

I would ask what the cost of ECU upgrade is if I were you. Seem to recall it seemed expensive for what it was.

Jonno,

I have problems with pics on the WSCC site, I just get little red crosses. I've looked for why, but cannot find an answer.


Rob Lane - 7/2/05 at 09:27 AM

Spent best part of weekend with Dean C trying to get the MS working with my standard ignition system.

It has a couple of puzzling points. It will try to start for a second or so but will not continue. The signals vanish.

I need an interface from the coil type dizzy senders to the MS input. It would appear that the signals on cranking are not strong enough.

Quite fun when I inadvertently make an ignition pulse that fires the unburnt fuel in one cylinder and cause car to jump Makes a kind of wheezing noise.

That's all that's left to do for MS to work.

Once I have timing pulses the MS unit will fire the Toyota ignitor quite happily. It's a bit similar to EDIS module but without the toothed wheel.

I suspect that this would be a good unit to use instead of a EDIS. Especially the early model Toyota ignitors that have a signal conditioning circuit built in, they just need a sensor. Later units have dwell controlled within ignitor.


Ian Pearson - 7/2/05 at 01:47 PM

Not sure if this is the right place for this question, so I'll post it in the Engine section as well.

I know that the GSXR 750 throttle bodies are commonly used, but will any others do? eg: 1000 or 1300?

Regards, Ian.


Ben Smith - 7/2/05 at 04:52 PM

Will go and see Mel for a price tomorrow. It is my preferred option as Martin at Raw has said he'd sort the wiring out. This is not my favourite job! Don't know much about MS system but like the look of Emerald. Dave Walker really seems to know his stuff. This may be stretching the original Idea of T/B's on a budget!

Ben.


stevebubs - 7/2/05 at 05:40 PM

Ben Gixxer TBs on Emerald is the way I'm going (for now - may switch to MS later (when running) and use the Emerald for something else)


Rob Lane - 8/2/05 at 05:14 PM

This is a good injector specs link that was posted on blatchat.

http://users.erols.com/srweiss/tableifc.htm


Ben Smith - 13/2/05 at 12:16 PM

Rob.
Got the car running yet? Any pics of system fitted? As you know, similar to what I'm doing so would be good to see.

Ben.


Rob Lane - 13/2/05 at 02:02 PM

Not quite yet. I've had mixed results so far with 'standard' system. That is, using the MS with standard loom etc.

I've had it run hesitantly for a second or so but then lost the 'dizzy driver' pulses.

I have just finished building an interface board and need to connect it to test.


Rob Lane - 15/2/05 at 08:54 AM

Tiredness led to a stupid mistake. I put the new chip in the board the wrong way round. No problem, it just didn't work.

Tried it turned around and it's a dead short, unfortunately took out something on the MS which now doesn't work

I will now have to fault find. It's a right royal pain as nowadays getting hold of components is no longer an afternnon shopping affair! There are so many suppliers closed down it's hard to find anything except off the major suppliers. Trouble is they have minimum credit card order of £20


Northy - 15/2/05 at 06:12 PM

What do you need Rob?


Rob Lane - 16/2/05 at 01:11 AM

Sorted Graham. Son was going to Leeds so he called at Farnells and brought me a few items on spec.

It had shorted the opto-isolator chip to ground which drew over 3 amps thru it.

25 pence new ic chip later and it's all working again.

Even better news, after no result from the new circuit board fitted on stimulator, I tried it on car and it was trying to fire the engine.

Slight problem though, I think there's no petrol left in tank


Northy - 16/2/05 at 07:04 AM

No worries, if you get stuck again just let me know


alden77 - 25/2/06 at 12:56 PM

Hi friends
I am new to this board, and I got here because of this topic. I have a Miata engine which I am considering buying a Weber/Mikuni manifold for, because I read that the GSXR's mount right to the DCOE manifold, but I see that the Webers are flange mount (as is the manifold.) The gsxr throttle bodies appear to be cylindrical on both ends, so how is it that they basically just bolt on to a DCOE manifold.
I appreciate any and all responses.
Alden


MikeRJ - 2/3/06 at 02:37 PM

The GSXR throttle bodies do not mount directly to DCOE manifolds. The spacing is different (easily fixed with the individual bodies) and as you have noticed DCOE's mount with a bolted flage. You would need to fabricate a suitable matching flange with a short length of tube which can be joined to the throttle bodies with a short length of silicon tube and hose clamps.


stevebubs - 3/3/06 at 11:03 AM

quote:
Originally posted by alden77
Hi friends
I am new to this board, and I got here because of this topic. I have a Miata engine which I am considering buying a Weber/Mikuni manifold for, because I read that the GSXR's mount right to the DCOE manifold, but I see that the Webers are flange mount (as is the manifold.) The gsxr throttle bodies appear to be cylindrical on both ends, so how is it that they basically just bolt on to a DCOE manifold.
I appreciate any and all responses.
Alden


The TBs attach to flanges bolted to the GSXR head via rubber mounts. The 750 flanges can be unbolted from the head and bolted straight onto the DCOE manifold. You then need to respace the bodies.


stevebubs - 3/3/06 at 11:04 AM

See Archive here


alden77 - 4/3/06 at 07:41 PM

That (Stevebubs) is what I thought I was reading (into) this thread. We have a Suzuki dealer next to my place of work who didn't think I knew what I was talking about. So if I get the base flanges that bolt onto the head of the bike, I can use them. Is there any disadvantage to re-spacing the throttle bodies?
Thanks to all of you for your help and inspiration.


stevebubs - 4/3/06 at 07:57 PM

quote:
Originally posted by alden77
That (Stevebubs) is what I thought I was reading (into) this thread. We have a Suzuki dealer next to my place of work who didn't think I knew what I was talking about. So if I get the base flanges that bolt onto the head of the bike, I can use them. Is there any disadvantage to re-spacing the throttle bodies?
Thanks to all of you for your help and inspiration.


It's horses for courses.

Respacing the bodies means making / purchasing a new fuel rail (I used an off the Shelf Jenvey item - not especially cheap) and you need to be careful when joining the spindles back together to make sure you don't warp them.

Be warned, though - the head flanges are blooming expensive - my local dealer quoted me £100 for 4. Scrappies want £25.

At the end of the day, if you're purchasing new rail (£60) and new flanges (£100) then you may as well get someone like Bogg Brothers to make you up a custom manifold and mount as-is - it'll cost less and be far easier.

When I bought my bodies, I made sure they came with the flanges....

[Edited on 4/3/06 by stevebubs]


stevebubs - 4/3/06 at 08:04 PM

More pics of the flanges etc here but the one below should give you what you need... Rescued attachment ThrottleBodies 003.JPG
Rescued attachment ThrottleBodies 003.JPG


stevebubs - 4/3/06 at 10:38 PM

Out of interest, who else has this setup (or similar) working?