chadroc

I'm running a 2000 corvette fuel filter/regulator. There is a fuel line and return line on the inlet side. Which is which? I thought the smaller diameter one(the one in the center) is the inlet one, but I can't get fuel to go through it.

4.6gt-2-ls1ta

iTrader: (3)

the little inlet is the return.

chadroc

That makes more sense! The only diagram I was able to find is incorrect. Thank you!
That return line just goes to the fuel tank right? It doesn't really make sense to me that it's even there.

ls1nova71

iTrader: (4)

You are using a returnless fuel rail, right? That's why it's there. The excess fuel has to go somewhere, you can't deadhead the pump. If you're using a fuel rail with a return the Corvette FPR won't work.

the_merv

iTrader: (88)

Smaller one is the return.. this is how I set mine up with my LS2 Rails.

I had the part going into the feed side of the Vette Fuel Filter/Regulator custom made..

rao

iTrader: (18)

I should just post this every week

https://ls1tech.com/forums/conversio...ilter-fpr.html

chadroc

Thanks guys! I wish I would have seen the thread you posted Rob. The only place I could find a picture was the "LSx into '67-'69 Camaro, the basics" thread and he has it labelled wrong! That where all the confusion comes from. He had such and informitive post, I assumed that would have been correct.
And thanks LS1nova, I thought that may have been the case.

bczee

iTrader: (12)

The return is small 5/16" as compared to the inlet, which is 3/8".

Camaros-n-Chevelles

iTrader: (3)

I am still working on the 55 Nomad with a LY6 and 4L80 and am trying to figure out the fuel system. I am using a 2010 Camaro Intake and am considering a fuel tank set up with the pump in the tank. I was going to use 2 Stainless Steel lines. The 3/8 line for my supply and 5/16 for my return. I was told to use a fuel filter from a 2000 Corvette in order to eliminate the return line. How is this accomplished? I am missing something and don't fully understand. Further clarification would be greatly appreciated.
Thank You.

1989GTA

"I was told to use a fuel filter from a 2000 Corvette in order to eliminate the return line. How is this accomplished? I am missing something and don't fully understand"

You need the 5/16" return line from the filter to the tank. What they are probably saying is with the 2000 Corvette filter you do not need a return line from the "fuel rail" to the tank which is true. As said you do need a return line from the filter to the tank.

Camaros-n-Chevelles

iTrader: (3)

Now I understand. Thank You very much for the clarification.

bczee

iTrader: (12)

Technically you need a return line. It is just a very short one from the FRP (Delco GF822 or something that will cross ref to it) to the tank return port.. You just don't need a return line from the engine/fuel Rail... Most of the times the FPR will be placed close to the fuel tank and therefore require a short return line.

The Vette FRP is both a Fuel Filter and a Pressure Regulator. As with most Regulator, it needs to return or bleed off excessive pressure and fuel.

Just make sure you connect the inlet and return lines to the correct ports on the FPR.. else you will think you have not pressure to the fuel rail.. This has happen to many before (don't ask how I know.. haha)...

BC