500 efi noise re-visited
#12
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http://www.offshoreonly.com/forums/g...r-preload.html
Another thread from 2012 with RL931 lifters. Maybe pm OP and see what he did to resolve the problem. Looks like his last post was on 4/16/16 so he's still active.
Another thread from 2012 with RL931 lifters. Maybe pm OP and see what he did to resolve the problem. Looks like his last post was on 4/16/16 so he's still active.
#13
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http://www.offshoreonly.com/forums/g...r-preload.html
Another thread from 2012 with RL931 lifters. Maybe pm OP and see what he did to resolve the problem. Looks like his last post was on 4/16/16 so he's still active.
Another thread from 2012 with RL931 lifters. Maybe pm OP and see what he did to resolve the problem. Looks like his last post was on 4/16/16 so he's still active.
#14
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#15
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I do notice yellowbullet form has some pretty good info for the most part at least on the subjects I've gathered info on from time to time. We'll be sure and keep us informed and good luck.
#17
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I think the tolerances in the lifter are too close, and they don't work well with thicker oils needed in a marine engine. Seems every thread I've read on these on auto forums that went with a light oil, and when we put light oil in these engines the noise went away.
If it were an oil problem it would always be there, not come and go? I don't know what to think anymore.
#19
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#20
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Did you set up your heads or did somebody else do them? Although I agree with you on the spring pressures are not accessive however just what if you put a +.050 locks on one engine to lighten the pressures a bit. Just to try and see if it solves the problem? It would be a inexpensive and real quick thing to do outside of changing your lifters.
Probably irrelevant but what kind of roller rockers are you using?
Probably irrelevant but what kind of roller rockers are you using?