youngstar

can anyone tell me how to do this,
an in depth guide would be helpful with pictures,
i have searched and found one but the pictures are dead?
many thanks
chris

youngstar

no-one?

172sport

iTrader: (6)

Why would you want one?

silent running

On the one hand you might say that if you don't already have a pretty good idea of how to plumb in an adjustable fuel pressure regulator, you shouldn't be messing around with fuel systems. But on the other hand, everyone starts somewhere...

At the moment in your offside fuel rail you have the standard regulator in the rear end of the rail. It's held in by a couple of little screws and has fuel hose coming out of it and a vacuum connection off the manifold to control pressure regulation. You're just replacing this tiny gizmo with a whacking great adjustable regulator, so basically you need to remove the original reg, replace it with a fuel rail adaptor that fits into the end of the rail the same. Extend the disconnected fuel return pipe and put a long fuel pipe on your adapter, now these two pipes are what you hook up to your adjustable reg, which will need to be sited elsewhere where there's room for it. Don't bolt it to the bulkead if you can help it as they can be noisy.

youngstar

ok, that sounds straight forward enough,
i was unsure on the pipe locations, i knew the most of it just wanted some clarification!
many thanks for your post silent running.

172sport

iTrader: (6)

upping the fuel pressure will just lead to bore wash, get it mapped.

dunx

iTrader: (3)

Upping the fuel pressure saves having to buy new injectors if you are running near their full capacity.... but aren't going crazy !

I've just got one, and now need acres of braided hose to sort it !

DunxC

youngstar

172, i am having it mapped, but i need this to get it mapped
so thanks for your most intelligent inputs

robsw

It is a good idea to reverse the fuel flow by fitting the fuel rail adapter and connecting it direct to the fuel return pipe. Then swap the fuel return pipe with the fuel pipe coming from the fuel filter, this makes it a lot easier to mount the fpr on that side of the engine on the fuel return pipe. I got rid of the top mount intercooler and fitted a from mount, so I used the old bracket for the top mount that was left attached to the idle control valve to mount the fpr on.

silent running

^^^^

Very similar to what I've done. My rail adaptor doesn't actually take a big long pipe off anywhere. It just feeds straight into the hard pipe that runs under the manifold. I then just have two short hoses running from the n/s of the manifold into the adjustable reg. I have mine mounted on a plate bolted to the inlet manifold.

minty

iTrader: (1)

any pics of these locations guys, i'm just about to fit mine.

Cheers
Minty.

kylejennings05

yeh pics would be good as im about to fit one too.

T5OLF

iTrader: (4)

To alter the fuel pressure maybe