<VV> Valve Noise

[Ron]

My first guess is that it's pre-ignition that you're hearing as 110's are 
very susceptible to it.  The cure is to use the best grade of gas, check and 
maybe retard the timing and go through the shrouds, etc. to make sure that 
it's not overheating.
RonH

----- Original Message ----- 
From: "pete" <pwilhelm2 at cogeco.ca>
To: <virtualvairs at corvair.org>
Sent: Tuesday, May 30, 2006 3:55 PM
Subject: <VV> Valve Noise


>I have a 1968 500, 110 HP. My current problem is that when the engine gets 
>very hot (i.e. after several miles highway driving) there is considerable 
>valve rattle when accelerating. This does not occur when the engine is cold 
>or on short local runs. I have recently replaced the valve pushrod 'o' 
>rings and set the pushrod gaps cold according to the procedure given in the 
>Corvair Basics book. Again, there is no valve noise whatsoever when the 
>engine is cold. I have re-checked the point gap and also the crankshaft 
>pulley and everything seems fine. Any ideas what is going on here? The 
>engine supposedly has about 69,000 mi.
>
> Pete
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