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GSXR throttle bodies what this? 2
piddy - 9/5/06 at 05:08 PM

There is a four way junction box/valve. It has one pipe that conects to the throttle bodies via a vacuum pipe the other threee outlet are 12mm. what is it? Rescued attachment v.GSXR.jpg
Rescued attachment v.GSXR.jpg

ruudbeckers - 9/5/06 at 05:21 PM

I guess it's the fuel pressure regulator, but I'm not sure, mine didn't have it.

Major Stare - 9/5/06 at 05:42 PM

I agree.

I wouldnt bother with the pipe that links the carbs to the Fuel Pressure Regulator.
Instead, link it to your ECU/MegaSquirt/Emerald or what ever you are using.

yorkshire-engines - 9/5/06 at 05:44 PM

Hi its not the fuel press regulator it a vcv valve dissconnect it and blank off the pipe
also if you dont want map sensor ill have it
cheers malc

piddy - 9/5/06 at 05:55 PM

What should I do for a fuel pressure regulator?
What have other done?
Best place to buy etc.

16vmini - 9/5/06 at 06:26 PM

when i ran my 2litre 16v vauxhall lump on suzi TB's , i used the std suzy injectors and pump , and did not use a pressure regulator ... i just mapped it to cope.

Matt

stevebubs - 9/5/06 at 06:27 PM

Is there not one bolted to the fuel rail?

If not, either go and buy a one from an appropriate car or buy an aftermarket one.

Q: Does the fuel rail have a return?

piddy - 9/5/06 at 06:48 PM

No, no regulator on the fuel rail and no return on the fuel rail.

MikeRJ - 9/5/06 at 07:05 PM

quote:
Originally posted by 16vmini
when i ran my 2litre 16v vauxhall lump on suzi TB's , i used the std suzy injectors and pump , and did not use a pressure regulator ... i just mapped it to cope.

Matt


Not a good idea unless the suzuki pump was designed to be used like this.

If you are relying on the safety pressure relief valve built into the pump itself. This will not necessarily give you a stable fuel pressure at all injector durations, and as you have no return fuel line you risk vapour locks in the fuel rail.

16vmini - 9/5/06 at 09:56 PM

its exactly how the suzuki was done , the fuel rail did not have a return , the pump was designed for it.

i ran a small swirl pot up front with the suzi pump mounted in it , this tank was then fed by the old weber pump at the back.

Matt

quote:
Originally posted by MikeRJ
quote:
Originally posted by 16vmini
when i ran my 2litre 16v vauxhall lump on suzi TB's , i used the std suzy injectors and pump , and did not use a pressure regulator ... i just mapped it to cope.

Matt


Not a good idea unless the suzuki pump was designed to be used like this.

If you are relying on the safety pressure relief valve built into the pump itself. This will not necessarily give you a stable fuel pressure at all injector durations, and as you have no return fuel line you risk vapour locks in the fuel rail.

stevebubs - 11/5/06 at 09:06 PM

quote:
Originally posted by 16vmini
its exactly how the suzuki was done , the fuel rail did not have a return , the pump was designed for it.


Yep - sounds like quite a neat solution, Matt.

alternative would be to tap the end of the rail and fit a return. You can then use a standard car pump / regulator.

Stephen

MikeRJ - 11/5/06 at 11:12 PM

quote:
Originally posted by stevebubs
quote:
Originally posted by 16vmini
its exactly how the suzuki was done , the fuel rail did not have a return , the pump was designed for it.


Yep - sounds like quite a neat solution, Matt.


Dave Walker of Emerald is not too keen on it! On top of the other disadvantages I stated above, it may also be difficult to bleed any air out of the fuel rail, which is done automaticly when you have a return.