oil pressure drops after 2600rpm. wtf

3.0 GT

2JZ Holset Mafia
Nov 30, 2008
381
1
0
Franklin, Tn
HEy, i got a 7m with forged internals, holset he351 turbo, remote oil cooler and filter setup, some other things and a brand new shimmed oil pump with maybe 10,000 miles on everything. but just recently i noticed a problem with my oil pressure. anything below 2500-300rpm the oil pressure is normal and in spec but once i cross over this point the pressure drops off. it seems like the more rpm, the lower the oil psi. at idle its a good 8psi. by 2500rpm 32psi. and once over that it will just go down with more rpms. i usually have 42psi at 3000+. i just changed my oil also and the problem still persists. any help would be great becuase this is worrying me
 

3.0 GT

2JZ Holset Mafia
Nov 30, 2008
381
1
0
Franklin, Tn
CyFi6;1713628 said:
Are you checking this with a known good mechanical oil pressure gauge? Which oil pressure port are you tapping into?

nope stock gauge right now but it was known to be working. and i know the stock one is crap but my prosport died so im using the stocker for now.
 

hvyman

Dang Dude! No Way Man.
Staff member
Apr 17, 2007
12,568
1
0
Fullerton,CA
Get a tester gauge that you use for testing purposes and goes where the stock sender is. Should be able to rent one from kragen or autozone.