Lack of oil to rockers at idle concerns
#1
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Join Date: May 2005
Location: Abingdon md
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Lack of oil to rockers at idle concerns
Purchased a used 454 last season and upon startup had blue smoke coming out of exhaust. Found exhaust valve seals leaking and excessive valve guide clearance. Decided to go with a new set of Merlin heads instead of rebuilding the old ones. Just got it up and running again and noticed no oil up to rockers at idle. At 1200rpm I can see A small amount of oil film and doesn't really show a steady trickle until 2000rpm. Oil pressure is around 75psi cold on my manual gauge and lifters are quiet. It's a mark IV block with retrofit roller lifters and comp steel roller rockers. Should I have any concerns about this? Don't want to wear out valve guides and seals on new heads from lack of oiling.
20-50w oil using stock mercruiser remote filter and earls 501ERL oil Tstat
20-50w oil using stock mercruiser remote filter and earls 501ERL oil Tstat
Last edited by 90nova; 06-03-2017 at 08:08 PM. Reason: Added info
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cam and rockers are from comp, so I'm guessing the lifters are as well. Didn't have any label on the link bar between them like most do.
#6
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I'd pull the lifters and look where the oil feed hole is,if its to high on the lifter,it will restrict oil to the top end.know this all to well.
#8
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thats not normal,,this is alittle better
#9
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So this has to be a lifter issue, correct? If inadequate oil pressure at the lifter, it would be same throughout bottom end? Could too little or too much preload effect oil metering?
#10
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That is not normal. You should see oil coming out of the rockets st idle like I the video just about my post.