The engine in my Pantera has a little over 1000 miles since a total rebuild. The rebuild included a .030" over bore, new rings, bearings, pistons, etc. Since the rebuild, the rings (or whatever) never seal or seat until the engine is thoroughly warmed up. The engine will blow clouds of blue smoke under load until it warms up. The engine idling when cold isn't too bad. Any ideas why the rings or pistons don't seal until the engine warms up? The pistons are Keith Black Hypereutectic and the rings are Speed Pro. I have read these pistons don't expand as quickly because of the silicon content. I miced the pistons before installing them and set the ring gaps all to KB specs. Any input would be greatly appreciated. I am thinking of pulling the motor back apart and installing forged aluminum pistons.
[This message has been edited by BD (edited 04-15-2003).]
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