5/16" fuel line instaed of 3/8" for LS1
05-07-2005, 05:25 AM
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5/16" fuel line instaed of 3/8" for LS1 Has anyone ever used there original 5/16" fuel lines when doing an LS1 swap instead of going to 3/8"?
Just wondering would 5/16" support a fairly standard engine or is 3/8" a must requirement?
If 3/8" is a must can you run 5/16" up to the pump and after the pump (pressure side) run 3/8" to the engine, or would this be pointless?
Just wondering would 5/16" support a fairly standard engine or is 3/8" a must requirement?
If 3/8" is a must can you run 5/16" up to the pump and after the pump (pressure side) run 3/8" to the engine, or would this be pointless?
05-07-2005, 07:10 AM
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Originally Posted by GTS346
Has anyone ever used there original 5/16" fuel lines when doing an LS1 swap instead of going to 3/8"?
Just wondering would 5/16" support a fairly standard engine or is 3/8" a must requirement?
If 3/8" is a must can you run 5/16" up to the pump and after the pump (pressure side) run 3/8" to the engine, or would this be pointless?
Just wondering would 5/16" support a fairly standard engine or is 3/8" a must requirement?
If 3/8" is a must can you run 5/16" up to the pump and after the pump (pressure side) run 3/8" to the engine, or would this be pointless?
dan
05-07-2005, 06:06 PM
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Car will see the odd track usage, but its no PRO Streeter and lots of hard street driving. I guess if theres problems I'll just upgrade that line from tank to pump to 3/8".
05-07-2005, 09:16 PM
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Originally Posted by GTS346
Car will see the odd track usage, but its no PRO Streeter and lots of hard street driving. I guess if theres problems I'll just upgrade that line from tank to pump to 3/8".
dan
05-09-2005, 04:37 AM
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Originally Posted by RXette
if you go to a 3/8" line, you should also go to a bigger fuel filter. btw, the ls1 fuel rail runs at 58psi. if your FPR is referenced to atmospheric pressure it will stay at 58psi over a wide load variation. if you want the pressure to vary as a function of the engine load, you should reference the FPR to intake manifold pressure. make sure your hose is fuel injector rated. normal fuel hose is only rated at 50psi. fuel injector hose is rated at over 200psi. most stock fuel pumps put out over 100 psi upstream of the FPR in fuel injected engines. just my .02.
dan
dan
Will be 58psi atmoshperic pressure.
05-09-2005, 08:02 AM
#7
the worse place to have a smaller line is in the feed to the electric pump.. generaly speaking, electric pumps are not very good at "sucking" fuel, but are great at pushing fuel. you're putting a restriction in the place it has the most effect.
it'll probly be fine if its stock, and when you're driving around... but it will effect pump life somewhat... how long, i donno.. but its working alot harder.
it'll probly be fine if its stock, and when you're driving around... but it will effect pump life somewhat... how long, i donno.. but its working alot harder.
