PontiacBonnevilleClub.com

Hello Everyone,

Just finished rebuilding my motor. After a lifter failure & subsequent damage, the engine has been rebuilt.

Work done to engine:
New camshaft
New lifters
New pushrods
New timing chain & tensioner
Polished crank
New pistons & rings
New bearings
Cylinders bored 20 over
heads rebuilt, resurfaced
Oil pump rebuild kit installed
New oil pressure sender unit

After running it for about 100miles, the pressure range is between 80-95psi. Consistently about 85psi while cruising. This is running 5-30W oil.

Does this sound too high? could this work above cause a high change in pressure? Can I keep running like this? Prior to the rebuild, 45psi was normally seen.

Gm Specifies a minimum of 60psi at 2000rpm, I constantly maxed out the 80psi oil pressure guage on my old bonneville at cruising speed with a good sending unit. Your high pressure is more than likely a healthy oil pump and a new engine with tight clearances, it will wear in.