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George/Maine · 06-04-2012, 09:52 AM

When you are using new rings and old pistons most of the time there is carbon in the ring groove.Some cheap motor jobs was to use under size bearing .001 or .002
Cheap motor job is what you get.Nice to have new stuff.If in car and all together put 12 volts to it and no sparkplugs and oil good,if oil pressure keep it going for a while,take a break and do it again.

06-04-2012, 09:52 AM	#13
George/Maine Senior Member Join Date: May 2010 Location: Mid coast Maine Posts: 1,878	Re: hard cranking flathead When you are using new rings and old pistons most of the time there is carbon in the ring groove.Some cheap motor jobs was to use under size bearing .001 or .002 Cheap motor job is what you get.Nice to have new stuff.If in car and all together put 12 volts to it and no sparkplugs and oil good,if oil pressure keep it going for a while,take a break and do it again.