[Amc-list] Compression time

[Wayne E LaMothe <superglider@xxxxxxxx>]

Spent some time on the 66 Ambo yesterday and this morning.  I finished a
complete brake overhaul and can't wait to see how they work.  I have not
had brakes in the car since 2004 when I bought it.  I put a kit in the
MC, replaced all the flex ines, new shoes, hardware and wheel cylinders
in the rear and bled the whole system with a vacuum bleeder.  All that is
left is to adjust the rear shoes up till they contact the drums and see
how it goes.  I am also putting in a fresh set of plugs and decided to
check the compression on the 327.  I do notice some blowby from the oil
filler tube when it is running.  So, I pulled all the plugs and started
the compression check.  I got 3 cylinders done before the battery got too
weak so I hooked up the charger and let it trickle overnight.  I started
over and was surprised to see that the 3 cylinders I checked last night
jumped 20lbs with the higher cranking speed of the fresh battery.  I am
wondering what you all think of the compression readings.  Shooting oil
in a few of the cylinders did nothing to the readings so I quit that
part.  The manual says the compression ratio is 9.7 to 1 but I am not
sure what that means in lbs of pressure.  I think the readings are pretty
good for a 109k (or 209k) engine with the exception of cylinder 5.  I
think the high reading on #6 may be carbon deposits?  Anyway here they
are:

#1  140lbs
#2  140lbs
#3  140lbs
#4  140lbs
#5  120lbs
#6  170lbs
#7  155lbs
#8  145lbs

There might be a variation of a couple of lbs in those reading since
these old eyes can't see the fine marking on the dial anymore but it
can't be too far off.

What do you all think?

Wayne
Wayne & Lisa (Skeezix), Bolton Landing, NY,
http://www.superglider.thinkhost.com/
AMO#8454,  82 SX/4, 258 auto
69 Ambo coupe, 401, M12, 66 Ambo 990 Wagon, 327,PW,PB,PS,posi,AM/FM,AC
2003 FLHTCI, 2000 WJ Limited
2001 Cherokee, 2002 STS Northstar
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