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Surge Tank And Dual Fuel Pumps (not In Tank Illegal)


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Posted

Ohh, the car I am getting the parts from has a 20V in it anyways hes putting it into his ke70, the ke70 is SO DAMN STRAIGHT, only 1 5 cent piece of rust I saw. Should be fun

Posted (edited)
The reason lift pumps and surge tanks are used is generally on cars which have been converted from carby to EFI. In a carby car, the fuel tank often doesn't have baffles, which means surges/starving of the fuel pump happen all the time. However, the carby itself acts as a surge tank (and the fuel pump is often in the engine bay), and so fuel supply to the engine is always constant. In an EFI car, the fuel pump is in the fuel tank, which is baffled to prevent the pump sucking in air instead of fuel and starving the engine. Cars which are converted to EFI often keep the old un-baffled carby tank, and thus need a surge tank (often tall and skinny, like a bottle) and lift pump to prevent surges from starving the fuel pump (which because of the pressure is a very bad thing).

 

 

spot on. my engineer made me shield the surge tank and fuel pumps in my boot before he gave me a certificate.

 

my setup is a little noisy but was certainly the easiest way to set it up for EFI

Edited by JC807

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