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Original Message
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| RE: 390 oil loss mystery |
| By Dad - 05/16/2001 11:05:24 AM; IP 209.181.104.88 |
| TD, Do you happen to have adjustable rockers on this engine? If so thats most likely the problem as with them and without plugging the oil galley holes you will get to much oil up top to the rockers flooding them. This can be fixed by installing a Holley jet into the oil hole in head restricting the flow. A 65 to 80 Jet should do the trick. If no adjustable rockers you most likely have a ring seal problem. Time and time again I see where the engine builder puts too much oil on the rings and in cylinders, this will cause rings not to seat. This step is as important or more important than proper cam break-in. What I have found best is a very light film of WD-40 On cylinders and nothing on rings. (a small amt of #10 oil can be used on skirts)This will get you the best ring seal. Most people think the ring actually breaks in but its the opposite where the cylinder fits to the ring. Do you have access to a cylinder leakdown tester? If not borrow or buy one and you should have under 5% leakage. Leakdown rates around 15 & up show improper assy or cylinder finish/bore lr |
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