Fuel pressure regulator
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On The Tree
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From: Phoenix, Az
Fuel pressure regulator I'm in the process of prepping a `99 Z28 LS1 motor for a sandrail. I will be using an aftermarket AC-Delco fuel pump. Is there any off the shelf fuel pressure regulators that I could put just after the pump that will provide enough pressure? I'm talking about something like a Borg-Warner FPR, not some billet high dollar unit. Would it work this way? I have a friend that has an 2000 LS1 in a rail and he had to replace his fuel rail with one from a `97 for something like $178. I have a VW rail with EFI, and an external FPR, but it keeps the pressure at around 40#. The fuel is routed from the pump to the fuel rail and then to the FPR. Any suggestions appreciated.
Thanks,
Mike
Thanks,
Mike
Thread Starter
On The Tree
Joined: May 2002
Posts: 191
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From: Phoenix, Az
Re: Fuel pressure regulator I just so happen to have the tank from the car the engine came out of. Don't know why they gave it to me, but now I'm glad they did.
I canabalized the FPR out of the assembly. It wasn't easy, but I think I have a working regulator. I tested it with air pressure and it appears to open around 57#. Don't know how accurate my gauge is, but it is fairly new. I will test it for leaks with fuel in the morning.
Where is the stock return line in relation to the tank. Can I put the regulator after a filter or should it be near the pump?
Thanks for the idea.
Mike
<small>[ May 08, 2002, 03:09 AM: Message edited by: Dipstick ]</small>
I canabalized the FPR out of the assembly. It wasn't easy, but I think I have a working regulator. I tested it with air pressure and it appears to open around 57#. Don't know how accurate my gauge is, but it is fairly new. I will test it for leaks with fuel in the morning.
Where is the stock return line in relation to the tank. Can I put the regulator after a filter or should it be near the pump?
Thanks for the idea.
Mike
<small>[ May 08, 2002, 03:09 AM: Message edited by: Dipstick ]</small>
Re: Fuel pressure regulator If that doesn't work for you, you could get the fpr from a 99 or newer vette. It is the regulator and filter all in one. I am using one just forward of the fuel pump and it works great.
TECH Junkie
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Re: Fuel pressure regulator </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Dipstick:
<strong>I
Where is the stock return line in relation to the tank. Can I put the regulator after a filter or should it be near the pump?
Mike</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The FPR is on the return side of the system. Just mount it anywhere before it dumps back into the tank. FYI, you can break off the lil tab in the middle of the torx screw on the bottom of the FPR. You can then adjust your pressure where you need it.
Tim
<strong>I
Where is the stock return line in relation to the tank. Can I put the regulator after a filter or should it be near the pump?
Mike</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The FPR is on the return side of the system. Just mount it anywhere before it dumps back into the tank. FYI, you can break off the lil tab in the middle of the torx screw on the bottom of the FPR. You can then adjust your pressure where you need it.
Tim
Thread Starter
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From: Phoenix, Az
Re: Fuel pressure regulator Thanks for the replies guys. I tested the one I canablized from the tank and it works fine. I put the stock pump in a bucket of gas with the output going to a "T" that went to the reg. Got about 57#.
I saw that Torx screw and wonder it it was for adjusting the pressure. BTW, I've seen the Torx drivers with a hole in the center for the anti-tamper screws.
One other thing, is there suppose to be a vacuum line going to the small nipple? I can suck on it and it just passed air. What's it for?
I saw that Torx screw and wonder it it was for adjusting the pressure. BTW, I've seen the Torx drivers with a hole in the center for the anti-tamper screws.
One other thing, is there suppose to be a vacuum line going to the small nipple? I can suck on it and it just passed air. What's it for?
