Posted by Dell (WA) on June 30, 2009 at 22:48:17 from (172.191.4.196):
In Reply to: Rebuild posted by 'Old 49 on June 30, 2009 at 18:03:29:
Old 49........you won't know until you dis-assemble yer engine whether you have 3-ring or 4-ring. Actually, 3-ring pistons are really 5-ring. 4-ring was an attempt to reduce oil burning and worked too well. It actually caused more cylinder wall wear. Remember, oil is the final seal between the ring and the cylinder walls. It should be intuitively obvious you don't want metal to metal contact.
In a regular castiron engine, you haffta bore the cylinders to gitt'em straight and true. With our sleeved N-engine, you just replace the 0.040 sheetmetal sleeve and yer back to original specifications without boring. Its really tuff to bore a sheetmetal sleeve. (too thin, turns into foil, no strength) Replace'um, eazier and cheaper. .......Dell
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