16v head/th bodies manifold?

Just collected set of gsxr th bodies for my 2.0l 9a, gona need manifold making to bolt em on, any1 know distance between cetre to centre of inlet ports on 16v head??? even roughly so i can make a start on design, cheers chaps

 

37mm between the ports ( roughly )

320mm from centres of furthermost bolt holes (roughly)

 

Cheers gvk

 

out of intrest, how much did the tbs set you back? i presume they were second hand?

 

paid 180, classed as second hand but actualy they'r new! came with injectors as well, just trying to get some info about what cc injectors are, any1 know?

 

try giving dubweiser a ring as grant had a mk1 golf with a 16v motor running on bike carbs (01724279844)

 

nice 1

 

They're about 88mm centre to centre on the inlet ports.

I think Gary was talking space between ports.

Joe

 

[:^(] sorry

 

what else do you need for bike t/b's

 

Management.

You can keep the original ignition if you want initially to get up and running.

You could use one of these SqirtNSpark management systems that you build yourself for 200, they look interesting and would run bike throttle bodies no probs.

Joe

 

There's a guy in the US doing this as we speak, would be interesting to see how he gets on. He using GSX-R 750 TB's ...

8v on GSXR Bodies

Joe

 

90mm IIRC to centres

 

Just measured it on a head I have here, vitually bang on 88mm.

Joe

 

could you just cut up an old bottom half of a inlet manifold ?

 

how do tbs measure airfow? is there a per trumpet measurement that can be used to modify the fuelling for each injector?
is there any good doc about tbs and their management online?
Edited by: GTI

 

GTi,

most use a throttle angle potentiometer, a vac signal, revs and temp signal

altern8 there is a guy on vortex who has done exactly that, got it all running then sold it, so not much to go on.

 

but where do you get a vacuum signal when there is no significant plenum? or is there a sensor built into the back (head side) of the butterfly casing?

on the other issue; i'd have thought that the lower section of manifold is angled wrong - it turns straight upwards.
especially given that you probably do need some amount (if not all of 12") of manifold between the butterlies and the head, you would want a custom 'flat' manifold on a crossflow head??
Edited by: GTI

 

vac signal-yeah from the head side, use all 4 branches connected together to damp out the pulses a bit

the vortex guy used samco hoses for the manifold

 

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