<VV> ? Rocker Failure - Twice! ??

[MarK Durham]

When I ran my engine with valve covers off (one at a time) to do a routine
valve adjustment after engine breakin, the push rods/rockers pumped a quart
of oil out per side while I did the adjustments, so my lifters are pumping
a lot of oil out to the rockers.

You must have been getting some oil to get the 500 or 600 miles, and that
is probably what you are seeing, but it does not appear to be enough to
provide good lubrication to these parts.

My push rods, new custom lenght Clark's, rotate quickly.

I am wondering if the push rods are worn enough on the end that they no
longer are encouraged to rotate, that they do not fit either the lifter or
the rocker bores well enough and/or may be leaking down there so the oil is
not getting out into the rocker box.

Its either that or you have a restricted lifter or two that are not flowing
oil.


Mark Durham
Hauser, Idaho
62 Monza coupe Red/Red 4 speed

On Sat, Jun 13, 2015 at 6:25 PM, Kent Goddard via VirtualVairs <
virtualvairs at corvair.org> wrote:

> 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??
> Kent
>
> 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
> 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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