<VV> ? Rocker Failure - Twice! ??
kentgoddard at msn.com
Sat Jun 13 21:25:26 EDT 2015
Lots of good comments. Thank you to all.
Update: Yes, push rods were installed with side-hole end out (at rocker end). I put on a used rocker/ball combo and ran the engine with 'holed' valve cover on. Saw no oil squirting through the rocker hole into the ball/stud area but couldn't see if there was flow from the push rod end of the rocker. So pulled cover off and ran engine. All push rods supplying oil and of course oil being flung from rockers. Not sure if it was enough oil because I've never done this before. Pushrods do rotate when valve is closed, although takes some force, so I'm assuming sooner or later oil would squirt into the ball/stud area.Other thoughts??
Date: Sun, 14 Jun 2015 01:13:59 +0000
From: hmlinc at sbcglobal.net
To: kentgoddard at msn.com; virtualvairs at corvair.org
Subject: Re: <VV> ? Rocker Failure - Twice! ??
Pushrods in upside down? Later, JR
From: Kent Goddard via VirtualVairs <virtualvairs at corvair.org>
To: "virtualvairs at corvair.org" <virtualvairs at corvair.org>
Sent: Saturday, June 13, 2015 6:22 PM
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
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???
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