<VV> my last engine noise mystery

[Bob Gilbert 1]

Hi Tim,

The more digging I do the more I'm beginning to think that it might be
piston slap and the metallic noise that I hear is the piston hitting the
cylinder wall.
When I used a really bright flashlight I did seem some scuffing on the
piston skirts. It's mostly minor scuffing but there one is a scratch big
enough that I can just feel it with my finger nail.
My borescope should be here in a few days and that hopefully will rule out
any damage on the top side of the cylinders.
If there is no damage, then I'm back to the possibility of piston slap and
if so, I'm not sure what I will do. Opinions vary all over the map from
ignoring it to doing a rebuild.

Regards,
Bob

-----Original Message-----
From: virtualvairs-bounces at corvair.org
[mailto:virtualvairs-bounces at corvair.org] On Behalf Of N2VZD at aol.com
Sent: April 17, 2014 2:27 AM
To: virtualvairs at corvair.org
Subject: Re: <VV> my last engine noise mystery

The last engine noise mystery I had here was a set of  TRW pistons
missmarked from the factory. They were marked .040 , but were really .030.
The noise sounded like lifters..ran the TV camera at the cam and all other
areas , took lifters out for a look , then accidentally touched the side of
a piston  skirt  that was down in the bore a ways. It went "click". Then I
started running feeler gauges between cylinder wall and piston...
New set of pistons fixed it. You can imagine how much fun that was for me.  
I no longer trust things as marked without checking closer. Never had that
kind  of fun in the "old days"
So , do not take ANYTHING for granted....
Regards, Tim Colson
 
 
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