Re: [Amc-list] The '65 American 330 cranks - (and the numbers are...)

[Frank Swygert <farna@xxxxxxx>]

I'm in agreement with Tom here. Run it a bit, kind of easy at first, and see if compression comes back up. My guess would be stuck rings on #6, and they likely will get better. When you put oil in the compression came up, indicating rings and not a burnt or stuck valve. Run some "Sea-Foam" through the oil, "Marvel Mystery Oil" if you can't find "Sea-Foam", or even try some engine flush (or add a quart of ATF or diesel to the oil and run it, but don't DRIVE it, to flush the oil system -- change oil before driving -- the main ingrdient in GUNK engine flush is diesel). There's a good chance those rings on #6 loosen up as the car is driven and compression comes back up. If it only comes up 20-30 psi it will be good! 

-------------
Date: Thu, 21 Feb 2008 14:01:21 -0800 (PST)
From: Tom Jennings <tomj@xxxxxxx>

On Thu, 21 Feb 2008, Bruce Griffis wrote:

> Okay, compression is not pretty.
>
> 1 = 110
> 2 = 130
> 3 = 120
> 4 = 120
> 5 = 140
> 6 = 80


Oh well, I'd go for it, but take it super easy on it when
you get it running, like < 2000 rpm for a while, like 10 -
30 minutes?  Then re-check it. If the plug is oily, or if
compression drops... bad.  Maybe it'll come up though.

-- 
Frank Swygert
Publisher, "American Motors Cars" 
Magazine (AMC)
For all AMC enthusiasts
http://farna.home.att.net/AMC.html
(free download available!)

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