Re: 56J Motor, Recent Work & Lessons Learned

Posted by Craig Hendrickson On 2013/12/1 16:39:18

Quote:

Interesting failure mode. I don't believe I've ever heard of that before. I wonder: what caused the pushrod seats in the rocker arms to fail? Inadequate rocker arm oiling? IIRC, the pushrods in a Packard V-8 are hollow but don't have holes in the ends like in most other engines, so the oil on the rocker arm end of the pushrod has to come from the rocker, not the lifter. Usually, there's enough oil flying around under the valve covers that EVERYTHING gets oiled, but in this case apparently not.

Craig