Who's our local cylinder head expert?
I have the Iron Square port 990 heads. When I built the engine many years ago I had a full valve job done and the shims they used started to come apart within a few trips. Caught it early and went to Teague, they don't stock that sort of thing and sent me across the street to Jim Grubbs Motorsports. I know a bit about Mr. Grubbs and trusted what he sold me. Hardened shims.
Since these were not supposed to come apart I didn't look under the valve covers as often. Fast forward to last week, lost oil pressure, fortunately caught it with a few seconds of happening. Swam the boat to shore and hiked it up river to a friends place and got a ride to my truck.
Top of the oil pump shaft broke off. Pic is of the piece that found it's way to the pan through the screen and froze the oil pump gears. Pump moved back and forth with the piece stuck in between, no noticeable damage to gears. I'll go through everything to look for damage, I was lucky. Water was rough so no long runs, was going out the following morning to see what it would do, that would have smoked everything or it would have run right through the gears causing damage later.
So the question is why are these coming apart? Running Comp Cams springs 924-16 matching my cam.
Who should I consult?
