[AT] Ferguson to30 cracked block

[charlie hill]

Here is a link to the lock stitch repair that Larry is talking about. 
http://www.locknstitch.com/Metal_Stitching.htm
I haven't tried it but a local machine shop guy here (now retired) used to 
fix blocks and heads with soft cast iron pegs that he hammered into holes he 
drilled along the crack.  The locknstitch method looks like it might be 
superior to that.

Charlie
----- Original Message ----- 
From: "Larry & Barb Dotson" <dotson at loganrec.com>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Thursday, April 03, 2008 6:38 AM
Subject: Re: [AT] Ferguson to30 cracked block


> John
> There is a system called "Lock Stitch" that uses a reverse pitch thread 
> that
> when screwed into a crack. will pull the two halves together. A series of
> drilled and tapped (special tap) holes are then filled with a special
> shouldered reverse pitch screw which is designed to break off when fully
> tightened leaving a slight rise than can be ground down even with the
> original surface. Once the surface is back to normal, a needle scaler is
> used to resemble the rough casting of an engine block. This system is used
> on some very large and expensive engines such as large ships where a new
> engine may cost in the millions. You should be able to Google for the
> source.
> Larry Dotson
>
>
> ----- Original Message ----- 
> From: "John Hall" <jthall at worldnet.att.net>
> To: "Antique tractor email discussion group" 
> <at at lists.antique-tractor.com>
> Sent: Wednesday, April 02, 2008 9:53 PM
> Subject: [AT] Ferguson to30 cracked block
>
>
>> Pulled down a TO30 for a friend and found the block cracked between #3 
>> and
>> 4 on teh lower end. Is there any sort of daring repair on these blocks or
>> is
>> it time to junk it? I have heard of one adventerous sole drilling between
>> the cylinders and pulling the block back together with a threaded rod. 
>> Any
>> ideas short of a salvage yard?
>>
>> John
>>
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