Join Date: Feb 2006
Feedback Score: 0 reviews
Re: Aeromotive fuel pressure regulator
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Why would you want to regulate the pressure BEFORE the heads ?
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I've talked to Aeromotive, and this is how the reccomend doing it, although I don't agree. They claim that with the small inlet for fuel in the heads, it creates a restriction and the fuel pump will work much harder. The claim that the fuel pressure difference in the lines before the heads and at the regulator (if after the heads) is quite large. I was told by them that if you set the regulator at 65-70 psi, the pressure before the heads is up around 90 psi.
My observations have been no where near that. I have a fuel pressure gauge on the regulator, and another one in the splitter before the heads. There is a difference of about 2 psi, when I'm running 65 psi set on my regulator. This is with the stock fuel bowl gone, using a Y-block to split the fuel to each head. When I had the stock fuel bowl, the pressure in the fuel bowl was about 4-5psi higher than what was at the regulator, running 65 psi at the heads. The fuel bowl was a bit of a restriction there. But, no where near the psi difference that Aeromotive is leading you to believe.