<VV> ? Rocker Failure - Twice! ??

[Dennis Pleau]

What kind of lube did you use on the rocker balls when you assembled the
engine?  Engine assembly lube works good, cam lube works good. Even STP
works good.

dp

-----Original Message-----
From: VirtualVairs [mailto:virtualvairs-bounces at corvair.org] On Behalf Of
Kent Goddard via VirtualVairs
Sent: Saturday, June 13, 2015 4:23 PM
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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