[AT] Drawn out 1949 AC-B engine rebuild

[charlie hill]

Thanks for posting that Squids link.  That's a new one on me and a good one.
Anyone looking for AC parts would do well to touch base with these fine
folks as well: http://stores.djstractorparts.com/   They know A-C inside and 
out
and are very helpful.

Just as the Squids site pointed out, cracks in the block between the 
cylinders on
A-C tractors are common.  Unless they are severely opened up they usually
don't cause a problem.

Charlie


-----Original Message----- 
From: Recentjester at aol.com
Sent: Saturday, March 07, 2015 8:39 PM
To: at at lists.antique-tractor.com
Subject: Re: [AT] Drawn out 1949 AC-B engine rebuild

he can buy the whole set on line sleeves an pistons. If crank  won't clean
up at .040 he will have to exchange it for another or get it welded  back to
stock by a rebuilder. the best rebuild story walk yah thru that I have
found is this http://www.squidsfabshop.com/Allis/ACBeng.php


In a message dated 3/7/2015 7:04:13 P.M. Central Standard Time,
meulenms at gmx.com writes:

I know  nothing about AC engines, are they sleeved. If so you can buy a
kit that  has pistons, rings, sleeves, and take all the guess work out of
it. If not  you'll probably need to get it bored and get the proper over
sized rings.  You are going to need to find a machine shop to help you
they are  invaluable. Keep the questions coming, it's been a long time
since someone  did a rebuild and needed help with it. Your bottom end
might be fine check  the clearances with Plasti gauge like Jester said.

Mike M

On  3/7/2015 4:25 PM, Mogrits wrote:
> About 10 yrs ago my B became very  hard to start and just as hard to keep
> running. A compression test  revealed...that it had almost none!
>
> So one weekend while a  cousin was visiting we tore down the tractor and
> engine and found we  could rock the pistons in the cylinders by hand.
> Obviously the  pistons, rings or sleeves or all the above were very worn.
I
> bagged  all the bolts and photo-documented it all and still have all the
> parts  neatly arranged but have not touched it in that time. I need to get
>  off my butt and get that tractor back in the field.
>
> What are  the lists recommendations as to how to proceed? I purchased
> Spencers  book on engine rebuilding and read it years ago, but it is still
>  outside my wheelhouse as to what is necessary and what isn't. What do  I
> check in the crank and what will need to be done there based on  those
> findings? Head/valve work while it's apart?
>
> I'm  asking for the kick in the pants that I've missed since George Willer
>  passed.
>
> (BTW, this tractor has no ignition issues as the  magneto was very
> professionally rebuilt by the now passed list  member/magneto whisperer
> whose name I can't recall) He was an  extremely kind and funny man. When
he
> returned the rebuilt magneto he  warned me not to park the tractor outside
> as an errant breeze might  move the tractor enough to generate a spark!
>
> Warren
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