[AJD] Cracks in heads

[Steve Treimer]

Great, just great.  I know for a fact Midwest Cylinder Head in Nevada will NOT, under ANY circumstances, "take back" their $495 welded head to fix a bad weld after their 90 day warantee.  I'll just pray it holds (so far so good) long enough for me to part with it so I can get me a little mid 80's 1650.  I love those tractors but they are so hard to find!
Steve

Gary Epps <garyepps at fidnet.com> wrote:
I couldn't get anyone to repair the head on the 35 D by welding it. 
Everyone said they had too many of them "come back". I finally found a 
guy that repaired it by 'pinning'. I have not run it much since the 
repair, but so far it seems to be fine.

Gary

Chris C wrote:
> I have little experience with cast iron welding, or
> cracked heads, but I am now the proud owner of 3 JD A
> heads with 'heat cracks' in them. 
> 
> I also have 3 Caterpillar D7's, 3T models, (late
> 40's to early 50's) Notorious for cracking heads if
> they were run low on water. Some old timers say
> sometimes the small heat cracks 'won't even leak'
> 
> So my question I guess, is could these heads have
> been running just fine? (The JD A ones) All of the
> cracks are in the 'face' of the head. Two have cracks
> in the valve seats of both cylinders, one has a crack
> in the metal above the valve seats of the #2 cylinder.
> (this one was also "tested" by the guy that sold it
> to me first.. hmm.. :( wonder if his eyes were open) 
> 
> 
> Anyway, I am off the see mr. local head welder
> tomorrow. My question, has anyone run a 'cracked'
> head and had no problems?
> 
> I would guess that first of all, a crack is
> going to expand and contract with the rest of the head
> as it heats so that crack certainly isn't going to get
> smaller if you keep running it.. 
> 
> Chris
> 
> 
> 
> 
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-- 
In the Ozark Mountains of South Central USA where both life and I move 
at a leisurely pace.

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