Looking into threads from the past it seems that the 750 model versions are ok for the Duratec.
I`m going to get an inlet from FastDan but my real interest is whether the 750 versions are ok for good power at a later date?
Also which version do i need?
Early ones are best as they have seperate bodies with one butterfly. Better for respacing and no extra butterfly spindles to bung.
Later ones have pairs of bodies making them harder to respace. Most also have a second set of servo opperated butterflys.
If you want bigger then early Hayabusa/zx12 are nice. (Biggist is not always best). They are also wider so the inlet runners will be better if your
not going to respace.
cheap if you risk importing them
SUZUKI GSXR750 GSXR 750 THROTTLE BODIES *FREE SHIPPING* | eBay
Gsxr750
zx12r
[Edited on 30/12/11 by big_wasa]
I used GSXR1000s K1s (2001) which, as big_wasa says, split into 4 separate throttle bodies and can be spaced equally. Gave me 192BHP on the RR with a
Mondeo Duratec (CJBA). They need a bit of work - remove secondary butterflies, metal puttey to fill injector holes etc.
Also used FASTdan's plate to create an adapter:
Duratec flange + GSXR1000s
Needed to make up a vacuum plenum though to smooth the MAP reading.
I used the ones big_wasa posted the ones with the red injectors on my zetec build
Simple to re-space ect .... They were from a 1999 GSXR 750 SRAD got them from the US for £50 postage want bad either 
I blocked the injectors and have them on a ST170 Inlet manifold with ST170 fuel rail and injectors spent about half an hour cleaning them with some
metal polish as i was re-spacing and they look mint !!!!
Cant comment on performance yet as i have yet to wire up my mega-squirt
GSXR 750 from a 2000/2001 bike - they have an internal diameter of 42mm same as the Jenveys.
I fitted mine onto a manifold from FastDan, we designed the manifold he now sells together.
Here's a picture of mine fitted
[img]
Throttle bodies trial fitted
[/img]
Once again fellas thanks for the comments, thats made life a lot easier.
I had the same set up as pjay but if you have the belt tensionor as big-vee-twin then it wont fit as the 1st throttle body clashes with this.
I went with big-vee-twin's set up but I still had to mod the top bolt hole of the tensioner (chop half off) as it was slightly fouling the TPS
Neil
quote:
Originally posted by neilp1
I had the same set up as pjay but if you have the belt tensionor as big-vee-twin then it wont fit as the 1st throttle body clashes with this.
I went with big-vee-twin's set up but I still had to mod the top bolt hole of the tensioner (chop half off) as it was slightly fouling the TPS
Neil
quote:
Originally posted by laptoprob
quote:
Originally posted by neilp1
I had the same set up as pjay but if you have the belt tensionor as big-vee-twin then it wont fit as the 1st throttle body clashes with this.
I went with big-vee-twin's set up but I still had to mod the top bolt hole of the tensioner (chop half off) as it was slightly fouling the TPS
Neil
Ive heard that before Neil but am pretty sure that FastDan shows the first tube on the inlet slightly bent to accommodate this...am i right?
Ford Duratec Bike Throttle Body Manifold * Aluminium * | eBay
The tensioner is from a Ford Focus and there is clearance for the Suzuki TPS.
The runner is angled to provide clearance
I went for a non tensioning pulley/mount that I made myself (top right):
Aux drive belt set up
This gives lots of clearance on the tps and also the advantage of straight flow in on No.1 cylinder.
Which alternator is that PJAY?
It's the good old (dreaded) Lucas that came off the Pinto (LRA100 IIRC).
Saved dosh and saved changing the wiring! So far okay with the engine running to 7150 rpm.
quote:
Originally posted by pjay
It's the good old (dreaded) Lucas that came off the Pinto (LRA100 IIRC).
Saved dosh and saved changing the wiring! So far okay with the engine running to 7150 rpm.