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05-12-2008, 05:15 PM   #9 (permalink)
Iethiopian
 
Join Date: Sep 2004
Location: SoCal
Posts: 992
Re: Pinging/Knocking/Popping

I had the same thing happen a short while back. And "ding, ding, ping" was pretty close to the sound it made. AFR had a bad batch of studs go out a while back. I called them after I located the problem and they sent me a complete set of new ARP's. The original studs were made by some other manufacturer. My engine suffered no damage but it could have been it could have been a mess if the failed stud and rocker arm had gotten it self lodged in the operating valve assembly before it was shut down.
You did not say which heads you were running but if they are AFR's you might want to give them a call.
Ras Daniel
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