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?
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?
