<VV> ? Rocker Failure - Twice! ??

[cdj]

I understand Clarks got a bad batch of rockers from China. I had one do the same thing to me.
CDJ


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-------- Original message --------
From: Kent Goddard via VirtualVairs <virtualvairs at corvair.org> 
Date: 06/13/2015  4:22 PM  (GMT-08:00) 
To: virtualvairs at corvair.org 
Subject: <VV> ? Rocker Failure - Twice! ?? 

Looking for help! 
Recently had my '66 140 rebuilt. Blew out #1 intake rocker arm at 500
miles (see photos).  Today at 600 miles
blew out #3 intake rocker in exact same fashion.  Appear to be overheated as both are somewhat
gunmetal blue.  #3 exhaust has not failed
but appears blue.  Others on R bank look
OK.

 

A few other facts: New Clarks mated grooved ball repo
rockers, new Clarks deep dimple lifters, reused pushrods (oil passages fully
open), 270 cam, new PEP springs with 105# seating force (not 'bottoming out' at
full lift), reworked heads (deep seats, milled to remove all but .010" of
land, mag bronze valve guides, etc.). 
Brad Penn 30W break-in oil for 600 miles.  Just put in Brad Penn 10W-30 today.  No loud tappet noises.  Not over-rev'ed.

 

I planned to drive the car to Knoxville next week but am now
having serious doubts.  

 

Has anyone seen or heard of anything like this before???

 

Many thanks. 		 	   		  
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