Re: [Amc-list] Saving for a 196 rebuild (maybe)

[Joe Fulton <piper_pa20@xxxxxxxxxxx>]

--- On Wed, 8/27/08, Frank Swygert <farna@xxxxxxx> wrote:

> From: Frank Swygert <farna@xxxxxxx>
> Subject: Re: [Amc-list] Saving for a 196 rebuild (maybe)
> To: amc-list@xxxxxxxxxxxx
> Date: Wednesday, August 27, 2008, 6:43 PM
> Try finding pistons first! And make sure you get the right
> rings for the pistons. There were two types, and the
> difference was the thickness of the rings. The last one I
> built needed 0.020" over to true up, but I found
> 0.040" pistons -- supposedly the last full set NAPA had
> on the east coast back in 94-95 or so. Counter man could
> have been exaggerating, or just meant the Atlanta warehouse
> (I'm pretty sure he said "east coast" though).
> 
> 0,040" over seems to have been a popular size -- the
> first 196 I built got the same thing because the machine
> shop (also sold parts) happened to have a set 0.040"
> over on the shelf (had been there 15-20 years!).  Bore it
> for what you can get, but assume it needs at least
> 0.020". Mine only had 180K (+/- a few hundred...) on
> it! They wear at the bottom from the side to side motion of
> the rods. The top on mine had barely enough ridge to feel
> with a fingernail. 
> 
> I'd run the piston down in that nicked cylinder and run
> some emery cloth over it just to make sure no edges are
> sticking up. Like Mark said, unless it's long and run
> vertically you'll never notice the difference. I Woke an
> old one up that had pits where a couple rings had rusted
> over the years in two cylinders. Didn't use any more oil
> or have less power because of it. 
> 
> Oh, it can be bored 0.0125" if it's prior to 1963.
> I'm not sure if the 63-65 block can be bored quite that
> much as it might have a thinner (lighter) casting -- not
> 100% sure on that though. 
> 
> --------------
> Date: Wed, 27 Aug 2008 14:37:44 -0400
> From: "Bruce Griffis"
> <bruce.griffis@xxxxxxxxx>
> 
> While the head was off, I checked the cylinder walls. Most
> are in good
> shape, but one has a very small nick or gouge in it.
> Can't really see
> it very well, but I can feel it when running my hand in the
> cylinder.
> Not good.
> 
> Since it was running okay, just blowing white smoke from
> coolant, I'm
> thinking of sewing it up and driving it. But - I know that
> if I can
> feel a small nick, the piston rings will definately
> "notice" it, too,
> and a small amount of damage can turn into a large amount
> pretty
> quickly.
> 
> Time to save up for some engine work. Not sure if it could
> be honed
> out, or if I would need to get it bored .030 over. Those of
> you that
> have bored out a 195.6 OHV, what is a general ballpark for
> boring it
> and going to oversize pistons? I need to figure out how
> much to put
> away. While it might work for a while (if I keep the revs
> down and the
> oil clean), it will need attention soon. Hopefully not
> sooner than my
> wallet can recover.
> 
> -- 
> 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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