SR20 Forum banner
1 - 2 of 2 Posts

·
Registered
Joined
·
2 Posts
Discussion Starter · #1 ·
After posting in the newbie section I'll do it again here:

Now until the "rebuild" of my highport UKDM SR20DE (1993). The engine had 160t miles one. It was cleaned, changed gaskets and big end bearings, headwork ,... . I've also checked oil pump clearence and it seemed to be OK. The problem now is that it has low pressure at higher rpm. I've done readings with a second gauge conencted (becouse the oil pressure senders are giving me headache). So these readings are done with a analog gauge at full heated up engine (drove for 20miles). Oil is Valvoline VR1 Racing 5W 50

rpm | bar | psi
----------------------
800 | 0,8 | 12
1500 | 1,6 | 24
2000 | 2,3 | 34,5
2500 | 2,9 | 43,5
3000 | 3,2 | 48
3500 | 3,3 | 49,5
4000 | 3,4 | 51
4500 | 3,4 | 51
5000 | 3,5 | 52,5
6000 | 3,7 | 55,5


Specification says not less then 0.78bar @ idle and 4,5bar @ 4500rpm.

So what do you say? bad pump?, worn bearings?, bad regulaton valve?
 

·
Drive it like ya stole it
Joined
·
6,928 Posts
The bearings could be sloppy and letting out oil pressure...check your bearing clearences.
 
1 - 2 of 2 Posts
Top