+- STD (https://www.superturbodiesel.com/std)
+-- Forum: Tuning (https://www.superturbodiesel.com/std/forumdisplay.php?fid=6)
+--- Forum: Engine (https://www.superturbodiesel.com/std/forumdisplay.php?fid=7)
+--- Thread: OM617 Oil pressure, any issues going higher than stock? (/showthread.php?tid=2510)
OM617 Oil pressure, any issues going higher than stock? - 300D50 - 04-13-2011
I'm redoing the pickup on my oil pump, and have what might be a stupid question.
Stock pressure on the relief valve is 7 bar, or ~ 100PSI.
Are there any issues with raising the max, or is the max ever indeed seen by the engine?
I know for some high-output g@sser engines people shim the regulator, but not sure on these old beasts.
I'll be able to arbitrarily set any pressure I want when I remake the relief valve housing, so figured I'd ask.
RE: OM617 Oil pressure, any issues going higher than stock? - Captain America - 04-13-2011
Well being as though the gauge always shows 50+lbs I have no clue.... I have always wanted to install a full sweep gauge just out of curiosity...
RE: OM617 Oil pressure, any issues going higher than stock? - aaa - 04-13-2011
For what reason?
RE: OM617 Oil pressure, any issues going higher than stock? - yankneck696 - 04-13-2011
I could see blowing out seals in the turbo & other engine parts. Except for all out race engines (with the specially designed clearances) higher volume or pressure could actually rob horsepower.
Ed
RE: OM617 Oil pressure, any issues going higher than stock? - Captain America - 04-13-2011
It wouldn't hurt the turbo seals since there is a orifice in-line already...
RE: OM617 Oil pressure, any issues going higher than stock? - 300D50 - 04-13-2011
It's in case I'm of when I recreate the cracking face of the relief valve in the new rear pump housing, and also for personal curiosity.
RE: OM617 Oil pressure, any issues going higher than stock? - DeliveryValve - 04-13-2011
I personally wouldn't go higher then 7 bar. Gaskets/seals, the plastic IP line and even oil pump is stressed. As long your getting at least 3 bar or 43 PSI @3000 rpm your good.
.
RE: OM617 Oil pressure, any issues going higher than stock? - 300D50 - 04-13-2011
But does the engine ever hit 7 bar in normal use?
I guess what I'm trying to get at is, would a variation of, say, 5PSI be an issue?
I'm going to do my best to recreate the relief housing dimensions to within a thousandth, but I could still be off.
I'll have to measure the travel of the piston from full-closed to the cracking surface, and run the numbers to find out how the spring rate and preload factor into it.
Oy vey, the things I get myself into!
RE: OM617 Oil pressure, any issues going higher than stock? - DeliveryValve - 04-13-2011
(04-13-2011, 08:11 PM)300D50 But does the engine ever hit 7 bar in normal use?
I guess what I'm trying to get at is, would a variation of, say, 5PSI be an issue?
...
Yes it does. It will hit 7 bar past 3,000 rpms. I think 5psi variance is not an issue. Any more then it might.
.