LSx swap question!
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On The Tree
Joined: Aug 2004
Posts: 129
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From: Sacramento, CA
LSx swap question! Ive been reading about the single feed fuel rails of camaro/firebirds and the dual rails on corvettes. From i understand the dual w/ the return is better? will the single inlet rail work? does it have a regulator built in like the dual rail? any info would help.... cars almost done just need the fuel system!!!!
Teching In
Joined: May 2005
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From: santa ana, ca
Originally Posted by SICMARO
Ive been reading about the single feed fuel rails of camaro/firebirds and the dual rails on corvettes. From i understand the dual w/ the return is better? will the single inlet rail work? does it have a regulator built in like the dual rail? any info would help.... cars almost done just need the fuel system!!!!
there is a fuel tank vent solenoid on the driver side fuel rail which has a hose connecting back to the fuel tank. for high performance, many divide the fuel supply line prior to the rail and run a separate branch to each side of the fuel rail. if you do this you should have a high volume fuel pump and larger supply line. 400 real wheel horsepower is no problem with the stock single camaro fuel supply.
dan
you could just try it and check fuel pressure. There isn't really a regulator on the 98 and up fbodys. But there is a way for the fuel to return to the tank by the t that's in the feed line after/ or before the filter. I would run a fuel pressure reg and a return or else I believe you'll burn the pump up from backpressure build up.
Originally Posted by SICMARO
so your saying to run a regulator, can i split it at the regulator and go back to the tank and one to the fuel rail? grrr im still learning fuel injection!! im used to carbs!!!
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On The Tree
Joined: Aug 2004
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From: Sacramento, CA
Originally Posted by red90cobra
Yes you can do that. feed line into the regulator and splits one to the rails and one back to the tank. That way you're pump will live longer. Hope this helps and also you have to get a hi pressure regulator.
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can you give me brief run down of how you've run your lines and size etc. let me know. the setup i've decribed should work. as for regulator aeromotive is good, get one cheap ones out jegs or summit for there brand should work for you.
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On The Tree
Joined: Aug 2004
Posts: 129
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From: Sacramento, CA
Originally Posted by red90cobra
can you give me brief run down of how you've run your lines and size etc. let me know. the setup i've decribed should work. as for regulator aeromotive is good, get one cheap ones out jegs or summit for there brand should work for you.
Teching In
Joined: May 2005
Posts: 49
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From: santa ana, ca
i use a holley FPR that has three ports and a pressure gauge fitting. one port is inlet, another is outlet and the third is the return. this FPR holds the fuel rail supply pressure absolutely dead on. it doesn't vary 1/2 pound over the full range. it is pricey $300, but really does the job. it has a reference vent that you can either hook up to manifold or atmospheric pressure. the fuel rail also has a gauge fitting so you can see if your supply line is restricting flow by comparing the reading on the rail with the reading on the FPR at wot..
dan
dan
Originally Posted by SICMARO
aare there differnet fpr for carb engines and fuel injec ?
yes one is designed for low pressure and the other hi. usually the efi's are good to some 70 other to 100 psi.
Teching In
Joined: May 2005
Posts: 49
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From: santa ana, ca
Originally Posted by SICMARO
aare there differnet fpr for carb engines and fuel injec ?
dan