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Old 04-08-2010, 04:58 PM
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tpi to carb

hey im doing a swap from 305tpi to 350carb with twin turbo my question is will i need a return fuel line im eliminating the factory lines and going all braided into regulator thanks

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Old 04-08-2010, 05:46 PM
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If your regulator doesn't use a return, it won't be needed. But, if you're using the factory fuel pumps, I'd suggest some sort of regulator that does use a return as the factory pumps don't take kindly to deadhead pressure over time. The return let's the pump relax a bit under lower load.
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Old 04-09-2010, 10:42 PM
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return to fuel sender unit yes, even on carb ones.,

TPI pumps too muh pressure for a carb so a regulator will be needed, or swap to a carb sender unit, or if using a mechanical pump then just remove the pump from the sender unit and replace with a length of 3/8" hose to serve as fuel pick up in the tank, or you could get away with a TBI pump on the TPI hanger.

good luck
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