8n ring seating

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Posted by Michael on October 20, 2018 at 14:57:28 [URL] [DELETE] :

I have a 1951 8n that has a rebuilt engine. New pistons, rings, sleeves, valves ( valves were lapped) , bearings, etc. the problem is I have low compression (~85 per each cylinder). And the engine runs a little rough. Will hesitate on take off. I have checked all the electrical (at least to my knowledge) and can find no reason for the rough running except the low compression maybe. I have spark to all plugs. Timing is correct. Can mark is lined up with crank mark. Wires, coil etc are good. It does not burn oil and I see no smoke from tailpipe and no exhaust gases from oil breather. I'm at my wits end. Could it be that the rings are not seating ?? What could I do to get them to seat if this is possibly the problem. Thanks

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