Ok so I just finished completely rebuilding my engine. I had a shim or something break in two and muck up my cylinder. In any case, I got a new cylinder, new piston rings, and a new cylinder head. After a LOT of S**T and D**N over woodruff keys and having my magneto on backwards it runs. However within the first 15 mins I have noticed a few things and wanted to make sure everything is ok.
First, I notice the crankcase gets pretty hot. It seems like it gets hotter than it did previously, but I don't have much of a frame of reference. I can smell something that smells like burning rubber, however I figure its just the super oily fuel burning off oil. Has anyone here had similar problems? Could this be signs of something really sinister?
Second... It has much less power than it did before. I am aware the piston rings need to seat and this likely has no happened yet. Also, the fuel mixture is super oily. (Likely more oily than even needs to be for break in) so I am willing to wait a bit to see if this situation improves. I just thought I'd toss it out there.
Things that might be important:
I broke one of the new piston rings during assembly. So right now it has one old and one new piston ring.
I did not replace any bearings. Some of the bearings were a bit "sandy" but I cleaned them out the best I could. I did repack them with grease also.
I had to get a bit western on the thing (thanks Norman for that term!) when trying to get the magneto, and the small sprocket on. It wasn't all out western, but it took a few hammer hits.
Let me know what you guys think. Should I be concerned, or just keep riding it gently during break in.
Matt
First, I notice the crankcase gets pretty hot. It seems like it gets hotter than it did previously, but I don't have much of a frame of reference. I can smell something that smells like burning rubber, however I figure its just the super oily fuel burning off oil. Has anyone here had similar problems? Could this be signs of something really sinister?
Second... It has much less power than it did before. I am aware the piston rings need to seat and this likely has no happened yet. Also, the fuel mixture is super oily. (Likely more oily than even needs to be for break in) so I am willing to wait a bit to see if this situation improves. I just thought I'd toss it out there.
Things that might be important:
I broke one of the new piston rings during assembly. So right now it has one old and one new piston ring.
I did not replace any bearings. Some of the bearings were a bit "sandy" but I cleaned them out the best I could. I did repack them with grease also.
I had to get a bit western on the thing (thanks Norman for that term!) when trying to get the magneto, and the small sprocket on. It wasn't all out western, but it took a few hammer hits.
Let me know what you guys think. Should I be concerned, or just keep riding it gently during break in.
Matt
