Quote:
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Originally Posted by ByronRACE
Causes of blow-by:
-improper bore finish, rings don't seat during break in
-mixture too rich, rings don't seat during break in
-wrong ring package
-wrong piston to bore clearance
-rings installed wrong
-excessive ring end-gap
-detonation damage (rings, ring lands, pistons)
But what is "excessive" blow-by...are you sure it isn't normal? All engines have blow-by.
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The car had 4 qts of
oil when we picked it up. Upon changing the
oil and filter, filling it to the full mark with 6.5 qts, the
oil pressure was up at 65. It had one of these breather caps that had a hole on top, and foam inside. You could see the oil mist pulsating upwards from the hole. So we installed a regular Ford Racing breather cap with the little holes at the base of the cap. You could still see the oil mist pulsating outward from the base. the 460 on SPF#1052 has the same cap and no oil ever pulsates out of it.
