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TurboKraft TurboKraft is offline
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Join Date: Mar 2005
Location: Phoenix, AZ
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Quote:
Originally Posted by GJF View Post
The rockers would only be the weak link but I 'd rather have a rocker break than bend a valve. Rockers are like a fused link, safe to fail without catostrophic failure.
You and I have had different experiences with rocker failures.
I had one break, like you described, and no other damage.
But on 2 other Turbos all the valves were bent, and both cams damaged. Best guess is that the broken rocker pieces jammed into the camshaft thus destroying the cam, also applying resistance against the chain and affecting cam timing momentarily (overcoming the tensioner?) on both sides, thus the bent valves.
With the age of these engines, we now magnaflux all rocker arms as a precaution during engine rebuilds.
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Old 05-18-2010, 08:44 AM
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