<VV> Varying Compression Readings?

[Dave Keillor]

Use a consistent number of "puffs" (e.g. 4).  Do a leakdown test, too.

Dave Keillor

-----Original Message-----
From: GYoungwolf at aol.com [mailto:GYoungwolf at aol.com]
Sent: Saturday, April 02, 2005 11:36 AM
To: virtualvairs at corvair.org
Cc: bruce_covert at yahoo.com
Subject: <VV> Varying Compression Readings?


I was checking compression on a '64 110 engine today, when I noticed that I 
can "pump up" the readings. Am wondering what that means? I was using a 
screw-in (sealed with an 0-ring) compression gauge. With a couple of revs,
the 
readings on all cylinders were a fairly consistent 95-100. But, if I
continued to 
crank the engine, the compression reading on several of them could be pumped
up 
to 125+. What, if anything, could this mean? (Plugs are carboned up a bit,
but 
nothing serious or wet.) Engine does not "smoke." Another out of sorts thing

I noticed was a very oily pcv pipe (PG trans) and some oil residue puddled
in 
the "duckbill" in the top of the carbs. (Worn rings??). I'm not sure of the 
mileage on the engine as the odo reads 12K, but that is almost clearly
neither 
original or 112K.
Thanks,
Grant
 _______________________________________________
This message was sent by the VirtualVairs mailing list, all copyrights are
the property
of the writer, please attribute properly. For help,
mailto:vv-help at corvair.org
This list sponsored by the Corvair Society of America,
http://www.corvair.org/
Post messages to: VirtualVairs at corvair.org
Change your options: http://www.vv.corvair.org/mailman/options/virtualvairs 
 _______________________________________________