<VV> Valve Rattle/Tapping :

[MarK Durham]

Rick, what type of oil is being used? When the mechanic went in and
readjusted, had the nuts backed off? And, if its been good all summer and
is doing it again, how many are rattling? My car did this and I had three
flat getting flatter cam lobes.
If all is good in the cam/lifter department, I might think the rocker arm
studs may have worn threads so the nuts cannot lock as well as they should.
To know if this is the problem, you would have to verify the cam and or
lifters aren't going bad, because wear in the system will show itself in
the same fashion as a loosening rocker nut, tapping lifters. .

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

On Fri, Sep 12, 2014 at 4:21 AM, Rick Sanford via VirtualVairs <
virtualvairs at corvair.org> wrote:

> A friend has good running `67 Monza Convertible 110hp 4 speed. The engine
> was built 7 or 8 years a go by a noted and a very experienced Corvair
> person who had a shop Corvair for a long time.   He has had the car for six
> years, and has spent a lot of money on it, and it has rather low miles.  In
> the past year or so the valves will get out of adjustment and make noise at
> idle.  Last winter he put "new correct self locking nuts" on all the rocker
> arms and had a noted Corvair Person re-adjust the Valves.  Quiet for most
> of the summer, but now the valves are making noise again.   Any Ideas of a
> cause or cure  ?
>
> Rick Sanford
> Werres Corp.
> 800-638-6563x236 office
> 301-748-4441 cell
> rsanford at werres.com
> www.werres.com
>
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