High oil pressure
#1
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I am having very high oil pressure, about 4 bar when warm. oil level is ok ......on a freshly rebuilt motor. Was totaly dry, put in 8 quarts. Any ideas?
#4
Addict
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
read totally dry engine. You might need to check the alignment of the OPRV. Should be about 3 bar when warm, 2.5 after really spirited driving but also, what's the current temp where you are. Mine was a bit higher the other day but it was 12 degrees outside.
#7
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Oil pressure is a function (primarily) between the fit of the rod and crank bearings. The tighter the fit, the less clearance between the bearings and the crank = higher oil pressure. The looser the fit, which will give you more clearance = lower oil pressure.
Did you happen to measure the old bearings and the new ones to compare? That might be the answer -- but it isn't neccessarily a problem.
Did you happen to measure the old bearings and the new ones to compare? That might be the answer -- but it isn't neccessarily a problem.