Thread: 283 with Oil Blow-by
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05-19-2008 06:06 PM #1
283 with Oil Blow-by
I just got an old 54 chevy with a 283 and it smokes like crazy out of the oil intake, blow-by. what do you think causes this?
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05-19-2008 06:28 PM #2
Piston rings shot or valve seals shot or both.PLANET EARTH, INSANE ASYLUM FOR THE UNIVERSE.
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05-19-2008 08:53 PM #3
Originally Posted by mstrivel
Define CRAZY? When you remove the cap and place your hand over the oil filler tube how much pressure (or vacuum) do you have?
Does this engine have a "PCV" (positive crankcase ventalation valve), or does it still have an early style "road draft tube"? The change was about 1962, maybe a little earlier in California. Road draft tubes worked by creating a vacuum to draw out the blow-by from the crankcase.
If the engine has been sitting "for some time" the oil rings could be carboned up as Richard pointed out. Old valve stem seals get hard a glass and just fall apart.
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05-24-2008 12:14 AM #4
283
Originally Posted by mstrivel
You're welcome Mike, glad it worked out for you. Roger, it's taken a few years but my inventory of excess parts has shrunk a fair bit from 1 1/2 garage stalls to about an eight by eight space. ...
1968 Plymouth Valiant 1st Gen HEMI