When you get an engine noise using a thicker oil simply masks the problem. If you have a machine shop inspect the block I think they will find your cam bearings are worn.
Hey thanks. Yea, That's all it did was mask it I'm sure. It was ticking loud one time, but sometimes I wouldn't hear it for months and months. It would come and go. Probably so on the bearings, I remember reading something about cam walk. I guess mine's been walking for about 5 years.
If the block it not cracked I'm sure it will need new cam bearings if that is the source of the tick. I guess I probably should go ahead and pull the block out and have it checked for leaks and if no leaks get new cam and bearings also. I can do all the other bearings. I have put cam bearings in a small block chevy I rebuilt with a tool I have and it's still going 8 years later and I could probably turn down a piece on the lathe to fit my tool and the rover cam bearings to put them in straight, but would have to have finished bearings. I guess if I had it at the machine shop I could let them put them in. I'm on the fence rather to pull the block out or just try rebuilt heads and new gaskets and hope for the best. Alot of work putting that all back together just to have to tear it down again though. Plus I would be paranoid all the time and wouldn't be able to drive it far or trust it, wondering when and where. Thank you for your input, I'm so focused on the block maybe being cracked haven't given the cam bearings much thought. Another reason to pull the engine.
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