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Ls1 into 240sx question

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Old Nov 4, 2007 | 01:47 PM
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Default Ls1 into 240sx question

Ok I'm doing a 2000 ls1 into a 96 s14 swap. I have everything for the swap just about finished up. I have one small question that I can't seem to find the answer to. So here it goes, I noticed that the ls1 has a feed for the fuel but no return, and the 240 has a feed and a return for fuel. So in this case is there anything special the ls1 does to return fuel, and what kind of fuel system will I need to run. Thanks
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Old Nov 4, 2007 | 01:54 PM
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most LS1 have returnless fuel systems, except for the 98 and under fbody's and corvettes. I dont know exactly what you would do in the 240 but im sure someone will chime in. In any case it wouldnt be a big deal, probably very easy to get around...good luck sorry i couldnt exactly help
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Old Nov 4, 2007 | 02:20 PM
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The corvette FPR is where the fuel is diverted back into the gas tank.

Here is a picture of mine. You can see one line goes to the fuel rail. and on the other side, one is the feed line from the gas tank, and the other goes into the return line to the gas tank.

What are you doing for a fuel pressure regulator?
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Old Nov 5, 2007 | 04:47 AM
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not sure, I havn't thought about that yet.....
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Old Nov 5, 2007 | 12:58 PM
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Originally Posted by Brismo7
The corvette FPR is where the fuel is diverted back into the gas tank.


What are you doing for a fuel pressure regulator?
im sorry man, but are you for real? i hope im not misunderstanding you, but it looks like you suggested the CORVETTE FUEL PRESSURE REGULATOR (FPR) and then asked what he's doing about one.

anyway, the vette deal is the most common and easiest method of filtering/regulating.

i got mine from rockauto on ebay for $40
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Old Nov 6, 2007 | 10:59 AM
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Originally Posted by NismoSilvia270R
im sorry man, but are you for real? i hope im not misunderstanding you, but it looks like you suggested the CORVETTE FUEL PRESSURE REGULATOR (FPR) and then asked what he's doing about one.

anyway, the vette deal is the most common and easiest method of filtering/regulating.

i got mine from rockauto on ebay for $40
thanks thats what i was looking for. The fuel rail also has a regulator to right? Just no return?
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Old Nov 6, 2007 | 08:37 PM
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pics of swap etc??
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Old Nov 7, 2007 | 01:30 AM
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It won't let me post pic.....not sure why.....

Last edited by LSWANs14; Nov 7, 2007 at 01:35 AM.
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Old Nov 7, 2007 | 10:52 AM
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that corvette filter is also a pressure regulator.
its a convenient and inexpensive unit that is easy to replace and easy to hook up.
I ditched my previous setup with a pricey aeromotive adjustable FPR and in line filter so that I could run the simpler and cost effective Vette FPR like shown above by Brismo7.

its a nice setup and as you can see you can use regular rubber fuel hose (rated for high pressure!) and hose clamps instead of expensive fittings and adapters.
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Old Nov 7, 2007 | 12:22 PM
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get the vette FPR. mine works great and is CHEAP.
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Old Nov 7, 2007 | 01:51 PM
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Yeppers! For the Vette FPR set up.
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Old Nov 18, 2007 | 12:24 AM
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Originally Posted by LSWANs14
thanks thats what i was looking for. The fuel rail also has a regulator to right? Just no return?
No the fuel rail does NOT have a FPR on it. The thing that looks like one just divides the fuel evenly to the 2 injector banks but does not effect the fuel pressure
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