Posted by stevieb49829 on April 22, 2023 at 20:41:27 from (72.168.160.118):
In Reply to: Dirty Crankcase Drama posted by stevieb49829 on April 22, 2023 at 08:09:07:
Here's some back story, for those who want more info. This engine has not run for many years. I don't know how many but probably more than 20, or 40!! I got it from a guy that snagged it out of 101 Jr. from a scrapper at an auction, then he took it home and stored it. I'm really surprised it still turned over, but he did pour the oil to it before storage. I do wish the previous owner had changed oil in it. I'm thinking that's where all the baked on carbon came from. I'm not above turning the crank and putting new bearings and rings in it, but I'd really like to find a way to clean the carbon out of it without scraping every square inch of the crankcase. The smoothness of the journals made me happy, until I started comparing measured to published specs. The bearings were smooth, but they are so old and unused, they're no longer shiny like they would be in a running engine. I think I might go back and torque a couple of rods back on the crank with plastigauge, and see if my measurements are suspect. Steve
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