quattromike
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| posted on 16/12/04 at 04:32 PM |
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throttle bodies
Hi does anyone have any opinions on which throttle bodie kit to fit to the 20xe engine ? i've looked at the sbd tp208 kit which seems quite
impresive with big gains in power with mininal modifications needed + the opion to upgrade if in the future i thought it was worth it. There must be
similar kits out there any of them better or worse?
Mike.
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BMF
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| posted on 16/12/04 at 04:38 PM |
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All the Westfield guys use Jenvey who I think do them for SBD.
Losts of posts about this on the westfield site.
Its a £1500 job at least.
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quattromike
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| posted on 16/12/04 at 04:51 PM |
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It's more like £1700! but i think it would be better with the tapered throtle bodies rather than the parallel ones with the better torque
readings. Of coase depending on the exaust manifold used I think makes a difference doesn't it?
would I be able to order them direct from jenvey cheaper or is it better to go to sbd?
Sorry for all the questions i'm just trying to soak up knowledge from everyone
Mike.
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BMF
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| posted on 16/12/04 at 05:02 PM |
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Have a look at this;
http://boardroom.wscc.co.uk/cgi-bin/ikonboard.cgi?s=01031f11504beee2c38a646896a30ea2;act=ST;f=3;t=22893;hl=jenvey
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James
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| posted on 16/12/04 at 05:08 PM |
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Interesting link.
Better still than £1500 is 75quids worth of Honda Blackbird TBs with a few mods plus £100s worth of Megasquirt.
HTH,
James
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ned
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| posted on 16/12/04 at 06:17 PM |
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if buying, the direct to head ones from sbd/qed/jenvey are lighter and better airflow to the heads inlet ports.
for mega money try the swindon iris/double roller barrel touring car spec bodies (nb they're about 4k!!)
otherwise nsdev made a set out of an old manifold and some blackbird injectors as james mentions, search on here for the thread with all the info..
Ned.
beware, I've got yellow skin
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tadltd
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| posted on 16/12/04 at 06:20 PM |
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Don't Lumenition do some roller-barrel throttle bodies, too?
Best Regards,
Steve.
www.turnerautosport.com
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Stu16v
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| posted on 16/12/04 at 06:24 PM |
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IIRC only QED sell direct to head TB's for the XE. The SBD bodies are all via a manifold.
Jenvey make the bodies for both, but I have a feeling that the QED directs/SBD tapers are licesned to be sold through their official outlets only...
Dont just build it.....make it!
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BMF
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| posted on 16/12/04 at 08:03 PM |
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The westy boys seem to all ring one guy direct, and buy direct which is why they are cheaper.
If someone give me £1500 I will do a trial for them!
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zetec
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| posted on 16/12/04 at 08:28 PM |
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I found Jenvey very good. One advantage of using non direct to head units is that they can more easily be used on other engines if you decide to
change. Worth giving Jenvey a call even if to get their advice.
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phelpsa
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| posted on 16/12/04 at 08:38 PM |
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Check out this thread
http://boardroom.wscc.co.uk/cgi-bin/ikonboard.cgi?s=d64acc7bb4358dde56a49e99bc5b18eb;act=ST;f=3;t=23341
Adam
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quattromike
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| posted on 16/12/04 at 11:26 PM |
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There's some good replys and links comming in thanks every one who's sent them.
So far (apart from all the bike throttle bodies) i'm still looking towards the tapered T.B's. the bike set up would be cheaper (if i got
it right first time) but the simplisity of the buy and bolt on kit appeals to me more plus there is less chance of damaging my engine through running
too rich or to that efect. + as mentioned above if i do change my mind some where alone the journey the T'B's will be easy er fo fit
diferent engine or sell on if they are on to a dcoe typ. manifold.
Afreind of mine who is building a tiger wants to fabricate his own throttle bodies and recons it would be easy enough but i think he'll still
have to buy the ecu and gubbins and i don't think it would be much cheaper plus any hassel he might have if he has problems(i wish he would go
ahead and make them so i can pass judgment). Or does every one think i'm being a bit of a chicken? 
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phelpsa
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| posted on 17/12/04 at 08:31 PM |
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Or this.
http://212.53.73.128/cgi/forums/YaBB.cgi?board=misc_parts&action=display&num=1103274523
Adam
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paulf
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| posted on 17/12/04 at 09:51 PM |
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Im thinking about making some throttle bodys at the moment, They could be fabricated, but my present idea is to make a pattern and have them cast and
then machine the bores etc.
I am using an old dhla 40 carb as a basis of dimensions and shape so as to be able to fit a standard manifold and airbox.However i have been thinking
that i may be better off to make some direct to head bodys and save the cost of a manifold and have a better installation also, but dont know if i
need to allow for waterflow through the inlet manifold for heating.
I will use a megasquirt and hope to do the lot for a couple of hundred quid.
The cost of the castings would be offset by selling some throttle bodys if successful.
quote:
Originally posted by quattromike
Afreind of mine who is building a tiger wants to fabricate his own throttle bodies and recons it would be easy enough but i think he'll still
have to buy the ecu and gubbins and i don't think it would be much cheaper plus any hassel he might have if he has problems(i wish he would go
ahead and make them so i can pass judgment). Or does every one think i'm being a bit of a chicken?
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NS Dev
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| posted on 17/12/04 at 10:58 PM |
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The trouble with making bodies is that unless you have a lathe and a mill and lots of time, it will work out more than buying them!! Even then the
cost of the ally (if working from billet) or the formers and materials if getting them cast, will make it expensive.
Just a thought, I just remembered an obvious one, the Rover KV6 has bodies as std and caterham use these on the VHPD engine so might be worht a try!
KV6's are cheap enough in the scrappies so i guess the tb's should be cheap
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James
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| posted on 18/12/04 at 12:14 AM |
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quote:
Originally posted by paulf
Im thinking about making some throttle bodys at the moment, They could be fabricated, but my present idea is to make a pattern and have them cast and
then machine the bores etc.
I am using an old dhla 40 carb as a basis of dimensions and shape so as to be able to fit a standard manifold and airbox.However i have been thinking
that i may be better off to make some direct to head bodys and save the cost of a manifold and have a better installation also, but dont know if i
need to allow for waterflow through the inlet manifold for heating.
I will use a megasquirt and hope to do the lot for a couple of hundred quid.
The cost of the castings would be offset by selling some throttle bodys if successful.
Unless it's just as a project of interest- why bother when bike TBs are so cheap!
James
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quattromike
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| posted on 18/12/04 at 12:44 PM |
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Would you say the bike T.B's give as good power and torque as the car ones will?
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paulf
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| posted on 18/12/04 at 09:22 PM |
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Thats exactly the reason i am thinking of making some , just because I can.
I have a lathe and mill and some experience of pattern making so thought that maybe i could make a set for myself and have some spare castings to
sell if any
one else fancys having a go.
I dont yet know the cost of casting them but am going to get a quote next week.
I have looked for bike bodys but not had any luck on ebay etc yet. I did miss a set of GSXR750s , and have seen a few 600 size units for sale but not
particularly cheap.When i rung around a few breakers i was asked by most if they were to fit to a car, as they are having a large demand for this use,
and quoted about £100 a set.
Paul.
quote:
Originally posted by James
Unless it's just as a project of interest- why bother when bike TBs are so cheap!
James
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paulf
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| posted on 18/12/04 at 09:33 PM |
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Ive just checked Ebay and there is a set of GSX1100 bodys on there for £95 buy it now, its a bit to close to christmas for me to be able to afford
them but might make a nice present for someone to buy for them self.
Paul.
quote:
Originally posted by quattromike
Would you say the bike T.B's give as good power and torque as the car ones will?
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Z350
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| posted on 19/12/04 at 08:34 AM |
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In all farness the tapered throttle bodies make no more power than the DCOE style. Dave Walker did some back to back testing on the XE engine when he
worked for CCC. The tapered bodies picked up a couple of bhp right up the top end and the DCOE type made a little more in the mid range. If you just
like the look of the tapered throttle bodies go for them but if you are looking for cheaper power fit the DCOE type. (This is all going from memory so
exact figures are not too accurate)
HTH 
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Project7
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| posted on 19/12/04 at 06:02 PM |
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I picked up a set of gsxr600 throttle bodies from ebay for about £52.
Ive just have an adaptor plate made up so they can be mounted on to a standard dcoe manifold using 'o' rings. As soon as i sort out a
digital camera i'll post some pictures.
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Northy
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| posted on 19/12/04 at 06:56 PM |
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Could someone recommend some throttle bodies to use on my 2L 8 valve VX? I could be tempted to go injection!
Graham
Website under construction. Help greatfully received as I don't really know what I'm doing!
"If a man says something in the woods and there are no women there, is he still wrong?"
Built 2L 8 Valve Vx Powered Avon
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Marcus
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| posted on 19/12/04 at 08:34 PM |
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Hmm, an injected crossflow. That could be interesting, what injectors are you using on bike TBs, do they have them built in or do you drill them for
car injectors?
(excuse the ignorance - luddite coming out from behind twin choke webber!!)
Marcus
Marcus
Because kits are for girls!!
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