Ok, so i have looked on here for a few days trying to get as much info as i could about oil/oil pressure/stock gauges but decided to do my first post...
I just had a rebuild done on my 91 turbo at 171k after BHG.(resurfaced head, block, new bearings, timing belt,MHG, all seals etc., original pistons, crank, cams, etc.)
The problem is my oil pressure seems to be really low. it has always been like that before the rebuild. Since i bought it four years ago, and a few years previous from what i was told, 15-40 was the oil ran in it. I attributed the lack of pressure to the worn engine but expected it to be resolved once the rebuild was complete. I switched over to eneos 5-40 after the dino-oil drain, thinking runnin 40 should suffice...
When I start the car cold pressure goes to about 30(the first hash is 20? is 30 low for cold start idle?) then when i begin to drive, it goes up to about 40 psi around 2500-3000 rpm, but then as the car warms up it tends to drop a lot. (i mean cruisin on the freeway doing 3000rpm it sits about one third of the way up between the first hash and the 40 mark!) besides this, it NEVER (according to the gauge, of course) gets above 40! I know i need to do a mechanical gauge check to be sure, but it sure feels like it needs more lube.
at all times the pressure seems low to me from what i have read.
Will shimming the pump do the trick? Is it just the old engine?? How much damage am i doing by driving it at these pressures?(i rarely push it beyond 4000-4500 rpm)
I just had a rebuild done on my 91 turbo at 171k after BHG.(resurfaced head, block, new bearings, timing belt,MHG, all seals etc., original pistons, crank, cams, etc.)
The problem is my oil pressure seems to be really low. it has always been like that before the rebuild. Since i bought it four years ago, and a few years previous from what i was told, 15-40 was the oil ran in it. I attributed the lack of pressure to the worn engine but expected it to be resolved once the rebuild was complete. I switched over to eneos 5-40 after the dino-oil drain, thinking runnin 40 should suffice...
When I start the car cold pressure goes to about 30(the first hash is 20? is 30 low for cold start idle?) then when i begin to drive, it goes up to about 40 psi around 2500-3000 rpm, but then as the car warms up it tends to drop a lot. (i mean cruisin on the freeway doing 3000rpm it sits about one third of the way up between the first hash and the 40 mark!) besides this, it NEVER (according to the gauge, of course) gets above 40! I know i need to do a mechanical gauge check to be sure, but it sure feels like it needs more lube.
at all times the pressure seems low to me from what i have read.
Will shimming the pump do the trick? Is it just the old engine?? How much damage am i doing by driving it at these pressures?(i rarely push it beyond 4000-4500 rpm)
