<VV> compression test

[Mark Durham]

Harry, you may be expert at setting valves cold, but most don't have
the expertise to do so. I did my engine that way when building it up,
but its less accurate once the lifters have pumped up and seated,
because its harder to find that zero lash position. And, unless the
lifters are NOS 60's vintage setting the lash at one turn will do
exactly the problem Bruce had in the first place as newer lifters
should be adjusted no tighter than 1/2 turn. The newer lifters are
designed differently internally and have less to play with in
adjustment. Mark Durham

Sent from my Windows Phone From: Harry Yarnell
Sent: Saturday, October 15, 2011 9:28 AM
To: Bruce Alexander; virtualvairs at corvair.org
Cc: judynrandy at comcast.net
Subject: Re: <VV> compression test
A lifter is holding the valve open. Book calls for one turn past zero lash,
but 1/2 turn is ok.
Hydraulic lifters don't always bleed down quickly in static mode, but will
when run.
 I am assuming you're adjusting them cold and by the book (let's not get
into adjusting them warm like SOME folks do).


-----Original Message-----
From: virtualvairs-bounces at corvair.org
[mailto:virtualvairs-bounces at corvair.org] On Behalf Of Bruce Alexander
Sent: Saturday, October 15, 2011 11:36 AM
To: virtualvairs at corvair.org
Cc: judynrandy at comcast.net
Subject: <VV> compression test

I have re- assembled my 64 110 engine after a "re-seal" Did a compression
check. All but two cylinders looked Ok  ( within 10 lb. of 145 lb).  #'s 3 &
5 read 0. I backed off the valve adj. on those two cylinders, re-tested and
got 160 & 175 lb.s can anyone tell me just what this might indicate?  such
as bad rings, bad valves or what?
...,Bruce
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