Hello. On my 86 n/a I just changed the oil..My oil pressure fluctuates between 30 PSI and under Power it is around 60 Psi..Is this normal or should it be at a constant level..And if it isn't normal than what do I need to purchase to keep it from doing this..Just wondering?? Thanks..

 

i know on s5's that's how it should be, are s4's different?

 

Naw, at idel it should be at about 30 and when at cruiser it should be around 60, it was the same with both my cars.......but the stock gauge kinda sucks..its not that accurate anyway

 

Its like that on every car made, as RPMs rise so does oil pressure.

 

When using the upgraded oil pump (17mm pump), you should see 30-40 psi around idle-1500rpm and about 90psi from 4000rpm-redline.

 

Bridgeported where can I get one of these upgraded oil pumps?? A website? How much..Let me know..Thanks..David..

 

It was stock in some Rx-7's.
I'm not sure which, but it could have been in the GSL-SE and the FD3S.

 

That sounds normal to me