Re: Found the problem
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Re: Found the problem



bummer,,at least it happened at the end of the season is the only good thing  if there could be one  when that happens...


On Saturday, November 9, 2013 3:15 PM, Paul L. http://1962to1965mopar.ornocar.org/ml-lennemann63.html <pjlenn@xxxxxxxxx> wrote:
That's a good suggestion Jim.  I have confidence in the machinist.  He's been in business for a long time and builds a fair number of racing engines including his own.  He knows Mopars too.  We had a conversation about file fit on the rings and the KB spec.  So I'm sure that was done correctly.  I did run some 89 octane mixed with some 91 this summer and got a little detonation on one occasion.  So it may have been my fault.

Paul L.

On Thursday, November 7, 2013 6:53:57 PM UTC-6, Paul L. http://1962to1965mopar.ornocar.org/ml-lennemann63.html wrote:
To recap for everyone:  On the eve of the Geezer Drags I drove my car to Rich K's house to socialize a little.  The engine started to miss, which was pinpointed to #4 cyl.  Discovered that the neg. electrode had been hit by something and bent over.  There was also a bit of a noise in the engine.  
Since I am now retired as of last week, I took time today to pull the head off.  Discovered that about 1.5" of the top ring land had broken off of the piston. So looks like the engine is coming out.  This is disappointing in that I probably only have about 1500 miles on a fresh rebuild.  And it has only seen 5K rpm a hand full of times in that time.  The pistons were new KB Hyper-eutectic's. 
Somewhat surprisingly there was no debris left in the cyl., and no apparent damage to the head.  Still need to check the make sure that the valve seats are not damaged.  I'm attaching a picture.

Paul L.
63 Sport Fury
440/727

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Please address private email -- email of interest to only one person -- directly to that person. That is, email your parts/car transactions and negotiations, as well as other personal messages, only to the intended recipient. Do not just press "reply" and send your email to everyone using the general '62-'65 Clubhouse public email address. This practice will protect your privacy, reduce the total volume of mail and fine-tune the content signal to Mopar topic. Thanks!
 
1962 to 1965 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.
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