Quote:
Originally Posted by mgarblik
The smashed plug gaps ............ or a valve timing failure, timing chain, something like that.
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This would be my first guess also.
And warped/bent valves is what closed the plugs.
For a first time build... Improper install of the fuel pump eccentric would be highly suspect. Unless you've done it before, most don't know that the nose of the cam comes all the way through the gear and the eccentric fits over it.
Eccentric bolted on with cam gear and nose of cam flush will let the bolt work loose after a little run time. Once loose the keyway will strip and let pistons hit valves. That's with high lift cams that make the engine interference fit.
Bunch of bent valve stems will lock an engine up.
So if anything is amiss under the valve covers. Next step would be pulling timing cover to see if cam gear has slipped.
Clay