<VV> Cracked Pistons

[James Cuneo]

Bob, I would estimate between 4500-5000 rpm at approximately 10psi after short 5 to 8 second run in 4th. Thanks,Jim 
From: BobHelt at aol.com
Date: Wed, 22 Jan 2014 13:10:01 -0500
Subject: Re: <VV> Cracked Pistons
To: jamescuneo at hotmail.com; virtualvairs at corvair.org






Hi Jim,
Thanks for the reply. I was more wondering if MAYBE, somehow 
the possibility of insufficient harmonic dampening MIGHT have some relation to 
your pistons cracking. #5 piston is down there near where most crank failures 
occur. Just a long shot.
While I'm wondering, at what engine speed did these failures 
occur?
Regards,
Bob Helt
 

In a message dated 1/22/2014 10:46:00 A.M. US Mountain Standard Time, 
jamescuneo at hotmail.com writes:

  As for the damper, I purchased a rebuilt unit from one of the popular 
  vendors at the time in '07. I don't remember which. When I degree'd the cam I 
  found the timing mark off by 1/2 degree and made a new mark. I will check 
  tonight to see if it has slipped.
  Jim