<VV> Diagnose engine "knock" ? valve seat damage

[Michael Kovacs]

Charlie, 
 You need a valve remover tool. Just keep track of which valve goes where. Don't 
loose the keepers. A smack with a mallet will sometimes loosen up on the keepers 
that wont let go of.  You can check the valve looseness by just pushing the 
valve back into the guide. It may take a good machine shop to really check this 
condition. Hope you just need a valve seat cleaning and a regrind.

You can check for valve leakage by reinserting both valves in the head and 
adding some light oil like kerosene to the head to see where any potential 
leakage is. O in # 3? I cant see why.

 Hope others will add to this basic stuff. Where do you live? Any experienced 
corvair people near you?MIKE KOVACS 




----- Original Message ----
From: Charles Lee <Chaz at ProperProper.com>
To: shortle <shortle556 at earthlink.net>; virtualvairs at corvair.org
Sent: Sat, October 16, 2010 1:35:34 AM
Subject: Re: <VV> Diagnose engine "knock" ? valve seat damage

Wow !  I would have bet that # 3 would have an obvious indication of valve 
seat damage, but it does not show any valve seat displacement ?
www.yourbuyersinn.com/Cars/Corvair/1967MonzaCylinderHeadRemoval.htm#CombustionChambers


I'm still convinced that #3 vale seat was the cause of my "knocking" when 
the engine wasn't even warm enough to do that ?
Would the area around the valve be worn if the seat was loose ?

The combustion chamber is wet though and the top of # 1 and # 5 are chock 
full of carbon, probably from messing with the carburetors, trying to get 
them right.

Any ideas ?  I've never removed valves before, so what do I need to know 
that will surprise me if I try this ?

Thanks again guys !
Charlie



----- Original Message ----- 
From: "shortle" <shortle556 at earthlink.net>
To: "Charles Lee" <Chaz at ProperProper.com>; <virtualvairs at corvair.org>
Sent: Friday, October 15, 2010 5:41 AM
Subject: Re: <VV> Diagnose engine "knock" ?


> Odds: Even money. Did you have good compression in all 6 cylinders before 
> you replaced the parking brake cable?
> Timothy Shortle in Durango Colorado
>
>
> -----Original Message-----
>>From: Charles Lee <Chaz at ProperProper.com>
>>Sent: Oct 15, 2010 12:43 AM
>>To: virtualvairs at corvair.org
>>Subject: <VV> Diagnose engine "knock" ?
>>
>>What are the odds that I'll find a dislodged valve seat on #3 ?
>>
>>Charlie
>>

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