<VV> re:VV ticking...sideline to ahh...darn...part 2

[Duane, Jim (US SSA)]

Hi Mark.

	They can indeed fail collapsed...  There is another
possibility... When I first rebuilt my engine, after my first long run,
I noticed a real loud tick and I thought the worst as well.  To make a
long story short, it turned out to be one of the self-locking nuts which
I re-used was backing off.  New ones solved the problem.  

Good Luck!

Jim Duane

'66 180 Corsa CVT, undergoing cosmetic surgery
CORSA 
Colonial Corvairs

-----Original Message-----
From: virtualvairs-bounces at corvair.org
[mailto:virtualvairs-bounces at corvair.org] On Behalf Of mark at noakes.com
Sent: Monday, May 07, 2007 12:47 PM
To: virtualvairs at corvair.org
Subject: Re: <VV> re:VV ticking...sideline to ahh...darn...part 2

I know this wasn't directed at my problem, but I basically did this 
check on mine Sunday PM though with 5 years olds questioning every step 
things went a little slow.

I haven't pulled the head yet, but nothing unusual in the way the 
valves were sitting that would indicate any seat problems...didn't 
think mine was that anyway though that was my worst fear, but I did 
pull all of the rockers and push rods looking for worn, warped, or 
cracked parts and didn't find anything wrong that I could see...however 
one of the rockers on #2 cylinder was pretty loose even though 
tightened down and cranking it down some while running didn't seem to 
make any difference...???  

Do I vaguely remember that a lifter can fail collapsed?  Never had 
that happen before...  It didn't seem to be getting as much travel as 
the others though that may have been my imagination...this is an 
original cam...not a regrind and it's been in the car and doing fine 
for a long time.

Any thoughts?

Guess I really have to pull things apart...but I don't really have 
time right now.

Mark Noakes

----Original Message----
From: s10birdman1966 at yahoo.com
Date: May 7, 2007 8:03 
To: <ron67ran at hotmail.com>
Cc: <virtualvairs at corvair.org>
Subj: &lt;VV&gt; re:VV ticking

...Ron ,a dropped seat will cause **more** than just a 'ticking'...my 
s10/2.8 gives me an 'audible alert' like that when it wants an oil 
change,at 2,500 mi,I'd try that first...it's *possible* a rocker is 
wearing down,from plugged pushrod-lack of oil,,or the lock-nut has 
loosened from it's adjustment setting,or pushrod tip or rocker ball 
seat is cracked...before you change the oil,check the rocker 
adjustments (hot..running) and keep an eye on the ticking one...Tom Z..
//

 
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