Bumble
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| posted on 31/7/09 at 03:42 PM |
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Zetec & Throttle Bodies
I have a 1.8 Zetec (Silvertop) which I'm planning to fit with Throttle Bodies in my MK Locost. I've seen some decent R1 Yamaha TB's
on E-Bay.....comments / advice welcome.
Oh.....I'm toying with the idea of trading up to 2.0L Zetec running the same TB's....thoughts on this as well.
Cheers.
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big_wasa
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| posted on 31/7/09 at 03:51 PM |
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Which model R1
R6 are cheaper and 38mm so upto the job on 1.8 and 2.0
Early R6 Tb's look like carbs but have injectors under them.
Easy to make a manifold with a flange from short track on here and ebay.
Ive not finished these yet but you get the idea.
[img]http://www.locostbuilders.co.uk/viewthread.php?action=attachment&tid=116816&pid=976942[/img]
PS Mine are for sale as pic if you want to finish them. u2u me for more info.
[Edited on 1/8/09 by big_wasa]
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will121
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| posted on 31/7/09 at 04:30 PM |
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think R6 or R1 (38mm good for 150-160bhp anyway) or the more popular GSXR600/750 as
ebay
another option on a silvertop is to use a standard fiesta/escort injector sandwich plate rather than the throttle body ones, one advantage is if you
are respacing them you dont need to worry about making a new fuel rail. only thing is you need a different manifold blank but shorttrack do both
options
sandwich plate in top of picture
[img] [/img]
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big_wasa
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| posted on 31/7/09 at 04:53 PM |
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Will, the later blacktop zetec uses end fed injectors and rail that fit the R6 Tb's
I will get a pic in a min
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whitestu
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| posted on 31/7/09 at 05:59 PM |
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Don't rule out bike carbs! I'd like to go for TBs / megasquirt, but from what I've seen there is absolutely no point from a power
point of view, and carbs are miles easier to set up.
Stu
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big_wasa
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| posted on 31/7/09 at 06:13 PM |
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pic
Megasquirt wont like them but the ford eec-iv +v will
 
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robocog
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| posted on 31/7/09 at 09:38 PM |
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big_wasa when you say "Megasquirt wont like them but the ford eec-iv +v will"
Why not?
I'm running a set of R6 TB's that look like carbs with squirty on my Silvertop (with the original motorcycle injectors on a cut n shut
re-spaced fuel rail)
Think mine seem to be working OK
Used the rubbers from the donor motorbike as well
Bolted them to a shortrack flange with some ally spacers between rubbers and flange so the transition of the 2 different shaped ports wasn't too
aggressive - all held together with long allen head bolts and a smear of sealant
No issues on induction side for the last year or so its been together
Good tip ref the blacktop injectors and rail fitting in like that :-)
Kind of handy to know..and could have saved some greif of the cut n shut traumas I went through
Regards
Rob
[Edited on 31/7/09 by robocog]
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big_wasa
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| posted on 1/8/09 at 09:04 AM |
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My very bassic understanding of Megasquirt, it is better to use hi Z injectors. You can use low Z but get into problems with board design and current
demands and the need for balast resisters, aswell as flyback issues. ?
So megasquirt will work better with the bike injectors than the low impedance ford injectors.
Please correct me if I have misunderstood this ?
[Edited on 1/8/09 by big_wasa]
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robocog
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| posted on 1/8/09 at 09:44 AM |
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OK, gotcha :-)
Think the low z injector issues (for v2.2 hardware) are resolved by using the add on flyback board and using pwm
OR
adding resistors
I thought the later v3 board already had the flyback built in so that low z worked out of the box with no mods or extra hardware...could be
mistaken
Think if given a choice of injectors hi z is plug and play if you have the older 2.2 board..but if you have the v3 board it shouldn't make any
difference?
Regards
Rob
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fatbaldbloke
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| posted on 2/8/09 at 08:09 AM |
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There's a set of GSXR 600 throttle bodies for sale on my website (plus quite a lot of information about converting from carbs to throttle
bodies).
NOW SOLD
[Edited on 2/8/09 by fatbaldbloke]
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