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Old 01 Dec 2011, 08:31 pm
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Default How to fix a scored crank/conn-rod on a seized Honda G-150 4-stroke?

I have a Honda HS-35 snow blower that I just bought. The previous owner ran the engine without oil (4 stroke), and the engine seized. I have everything apart, and the good news is that the cylinder is smooth as can be, and the piston did not freeze in place. However, there is some scoring on the crank shaft and the connecting rod. I lightly sanded both the remove some burrs, but when I installed the piston again and torqued the bolts, the engine was really tough to turn by hand. It wasn't as bad as it was, but I don't think it will run in this condition.

A new OEM crankshaft is $212, and the connecting rod is $75, so it isn't worth it. I can buy a brand new engine for not much more.

My question is, is it worth carefully polishing both with some emory cloth until they are smooth? This will undoubtably remove a few thousands of material, but is a tiny bit of play okay on these small four strokes? I could also take it to a machine shop, but unlike a car, I can't just put some oversized bearings in place. The conn-rod and crankshaft touch directly.

Any thoughts? Thanks, and Merry Christmas!
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Old 01 Dec 2011, 08:46 pm
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better to go for replacement or search for a used item in the local market
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