Author Topic: Aftermarket fuel rail (Read 14365 times)

AdamOsborne · « **on:** October 06, 2008, 03:40:38 PM »

Does anyone make an aftermarket fuel rail for the M42? I am having a bit of trouble trying to install a RRFPR in place of the onigional FPR. Thanks.

pinkyvsbrain · « **Reply #1 on:** October 06, 2008, 06:14:06 PM »

OT - on

....maybe anyone can tell me what RRFPR and FPR means? I guess FPR is a Fuel Pressure Regulator, but I'm not sure. :confused:

OT - off

Shocker · « **Reply #2 on:** October 06, 2008, 09:21:14 PM »

RRFPR (Rising Rate Fuel Pressure Regulator) I had one installed on my carand works just fine.

rob_e30 · « **Reply #3 on:** October 06, 2008, 09:41:43 PM »

You can install a RRFPR after your stock FPR provided you want higher fuel pressure than the stock FPR provides (as is often the case).

George77 · « **Reply #4 on:** October 06, 2008, 09:53:29 PM »

You can remove the stock fuel pressure regulator an then there's two O rings ,if you remove the smallest one, the fuel it;s gonna by pass the fuel pressure regulator and you'll be able to set your own pressure with your rrfpr.In case you want a smaller base pressure.

kowalski · « **Reply #5 on:** October 07, 2008, 02:56:31 AM »

Quote from: George77;58018

You can remove the stock fuel pressure regulator an then there's two O rings ,if you remove the smallest one, the fuel it;s gonna by pass the fuel pressure regulator and you'll be able to set your own pressure with your rrfpr.In case you want a smaller base pressure.

good information.

ose30 · « **Reply #6 on:** October 07, 2008, 08:52:43 AM »

Check this out. This Swedish 318IS has a PPF fuel rail (Made by Nuke). I have ordered some Porsche 944 Turbo fuel rails from Nuke. Very good quality.

btw, this M42 pumps 615hp....

hoevesruperd · « **Reply #7 on:** October 07, 2008, 04:39:15 PM »

Quote from: ose30;58039

Check this out. This Swedish 318IS has a PPF fuel rail (Made by Nuke). I have ordered some Porsche 944 Turbo fuel rails from Nuke. Very good quality.

btw, this M42 pumps 615hp....

thats a decent car... i guess :eek::eek::eek::eek:

ose30 · « **Reply #8 on:** October 08, 2008, 01:12:52 AM »

There are a lot of intresting E30's in that Swedish PPF forum. Unfortunately you must register into it to be able to read that forum, so some basic knowledge of Swedish lanquage is needed.

1991 E30 M42 · « **Reply #9 on:** October 10, 2008, 10:02:00 AM »

I took out my stock fpr and welded a round plate on the fuel rail where the clamp goes, and then welded an 1/8th npt bung in it so I could mount a gauge to the rail. then I left the stock feed line on the rail and had the outlet on the rail go to the inlet of the fpr then the return line form the fpr went to the stock hard pipe. I have some pictures somewhere and ill post them as soon as I find them.

rob_e30 · « **Reply #10 on:** October 10, 2008, 11:25:07 AM »

We have not found the need for an aftermarket fuel rail. It's not running higher than standard pressure, but we did upgraded the injectors (significantly) to deal with the increased fuel requirements.