I bought an Avanti that came with a parts car. That Avanti had been in a fire or on fire but it was just the back half and interior that was burned. The engine was to have been rebuilt and when I remove the head and wiped the piston top clean the .030 ink stamp was still visable. I took the motor apart cleaned and checked what had been done. The only changes I made was to replace the cam, lifters, cam and crankshaft gears. They had wear patterns on them that I didn't like. Cam bearings were new, crank turned, new bearing etc. All the clearances checked with plastic gage and when reassembled turned over by hand smoothly. The engine sat 3 years until I now have a car to use it in. Engine sounds good but has low oil pressure 30lbs top 5 or less at idle. Verified pressure with another gage. I checked the plug in the distributor tower. It's there and I pumped oil using an electric drill and no leakage in that area. I had the valve covers off while looking for leaks and no oil leaking from the rockar arms. Removed and replace oil pressure relief valve although all looked good. With the engine running on 3 occasions I watched the gage suddenly go up to 65 lbs and then drop back to 25-30 lbs it was. There was no change in engine speed the oil pressure just went up and then back down. This was the first Stude engine I've taken apart (never had to before) and someone had it apart before me so the problem maybe something I overlooked or something that was left out that I missed. I'm going to take the front of the engine off and pump some oil with the drill and look for leaks and them drop the pan and look at the oil pump. Any other suggestions of things to check or do?
Ken
Ken
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