Guest TurboSedan Posted February 12, 2003 Report Share Posted February 12, 2003 is there a difference between the n/a 3.1 and the TGP fuel pressure regulator? if so should i buy one at the GM dealership or somewhere else? thanks, joshua Quote Link to comment Share on other sites More sharing options...
GnatGoSplat Posted February 12, 2003 Report Share Posted February 12, 2003 No difference. I put a Borg Warner in mine and it works great. The GM one seemed to have a better fit, however. Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted February 12, 2003 Report Share Posted February 12, 2003 thanks i appreciate it joshua Quote Link to comment Share on other sites More sharing options...
TGPilot Posted February 12, 2003 Report Share Posted February 12, 2003 There is no difference between a n/a GP and a TGP? I thought there would be for some reason... 8) Quote Link to comment Share on other sites More sharing options...
Chris A Posted February 13, 2003 Report Share Posted February 13, 2003 By virtue of design there doesn't need to be. The FPR utilizes a diaphram and an orifice to regulate pressure. On one side there is a spring and a vacuum port, the other the orifice with fuel. The orifice allows fuel to bleed off into the return line, reducing pressure, the more the orifice is restricted less fuel is returned and the higher the pressure. The spring pretty much sets the base fuel pressure (it works to raise pressure), and the vacuum port works against the spring, allowing fuel pressure to decrease as vacuum increases. On a turbo car under boost, the spring and the boost pressure work with each other, pressing on the diaphram to restrict fuel return and increasing pressure. Since the spring rate and vacuum port are matched to a 1:1 ratio (1 psi of fuel pressure decrease for 1 psi of vacuum) it works at the same ratio for boost pressure. Chris Quote Link to comment Share on other sites More sharing options...
TGPilot Posted February 13, 2003 Report Share Posted February 13, 2003 Cool...I learn something new everyday... 8) Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted February 13, 2003 Report Share Posted February 13, 2003 You and me both. Quote Link to comment Share on other sites More sharing options...
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