A FPRV is fitted to the TT pump assembly, a couple of references on TT.net think that it goes at 80 PSI (compressed air) and 120 PSI, anyone had experience or an idea of its rating ? Has anyone pushed a stock pump above 80 PSI ? Pete (PMACK) wernt you running some crazy pressures ? http://www.twinturbo.net/net/viewmsg.aspx?forum=general&msg_id=1694779&forum=general&dtSearch=1 http://www.twinturbo.net/net/viewmsg.aspx?forum=technical&msg_id=1129869&forum=technical&dtSearch=7 Just found this: http://www.z1motorsports.com/product_info.php?products_id=1555
Mungyz posted on this a while back in one of his threads, I think he said it was around 60psi it starts to open?
I think there is only one FPRV in the pump assembly, Ashes car is a 93 and show a picture that looks like the valve is inline on the pump output, where most pictures show it on the pump body itself like ezzupturbo's pictures. Different versions I think.
I think I see what you are saying now, there is the reg looking thing on top of the pump AND the bit at the bottom that ezzupturbo stuck a bung in. Or are they part of the same thing ? Says good for 80+ PSI here: http://www.z1motorsports.com/product_info.php?products_id=1555 FAST says 4 fuel pump part numbers TT/NA/2+2/punt.
