Thread: engine drop
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JFairman JFairman is offline
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Join Date: Jul 2006
Location: S. Florida
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looks like typical cam and rocker pad wear from running common current day USA EPA mandated motor oil low in ZDDP.
most 20w-50 "racing oil" and "V twin motorcycle oils" still have good amounts of ZDDP.

brad penn 20-50 racing oil and mobil one 20-50 v twin oils are still some of the best oils high in ZDDP additives to use, and you will likely never see that kind of wear when using them as long as the cam spray bars are clear and not clogged.

if that isn't the cause and thats a hard welded reground cam then it could be caused by the built up welded on metal breaking down.
if the picture showed the side of the ramp and nose of the cam lobe and the dirty oil staining was wiped off with a rag soaked in solvent then you could see the lighter color metal on the sides of the lobe from the weld build up and grinding process.

if you continue to run that cam it will continue to eat up the rocker arm pad and put little chunks of hard metal into your oil as it self destructs.

that cam needs to be repaired and webcam, elgin, and john doughherty (if i spelled his last name right) can do a good job of it.
if it was already hardwelded and reground by webcam there should be a webcam grind # stamped or scribed into the flat end of the journal at the flywheel end of the motor.
Old 01-30-2011, 08:24 AM
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