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Kirkham Motorsports

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  • 2 Post By olddog

 
 
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Old 06-22-2019, 05:18 AM
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Join Date: Dec 2015
Cobra Make, Engine: Superformance #705, Ford Racing 460 - 514ci
Posts: 108
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Default Messed up push rod and rocker in my 460

Hi, Yesterday I went to set the lash on my 460 that I have in a Cobra. It is a mechanical solid roller setup and has all comp cam valve train parts. The rockers are blue Ford AVO 1.73.

I was checking the lash and I got to one of the exhaust valves and found just over 0.200. It was so loose the rocker was basically floppy. I was able to see the end of the push rod and under side of the rocker was totally hammer'd. I pulled the intaked figuring it was a problem lifter or maybe cam issue. I pulled the lifter out to get a good look and both the lifter and cam look great. I see no problems with either of them. Best I can tell the valve and springs are fine also. There doesn't seem to be any hang up. The rocker stud was seated all the way also.

I think I caught this early as metal flake/bits are at the top of the cylinder near the problem area but I have no idea what caused it!

The rods are one piece. I don't know if it was maybe faulty? Or possibly the steel cup that the rod sits in on the rockers went bad?

Here are some pics..... Thanks in advance!


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