[AT] Manifold to head issue

[Howard Fleming]

Good morning,

This question comes up quite a bit on the Ford list at Yesterdays Tractors
.
http://www.yesterdaystractors.com/cgi-bin/viewit.cgi?bd=nboard&th=908628
>
> Sometimes the leak isn't from the gasket.It's because the manifold or 
> block is damaged. Look for smoke tracks. If the block is badly pitted, 
> (usually around # 4) you will have problems; get out the /hi-temp 
> metal epoxy. (Not JB Weld) VersaChem's exhaust manifold repair, or 
> ThermoSteel, is said to be good to 2000 degrees./ /Clean the area real 
> well with brake cleaner, put a little epoxy on it, put some wax paper 
> over it and bolt down the manifold. After it dries take off the 
> manifold and take a die grinder and clean the epoxy that might squish 
> into the port./ Look at the manifold, again around # 4. If it's pitted 
> & burned, it isn't going to seal. Time to surface it or get a new one. 
> Do not double the gaskets! The gasket has two pieces, left & right (or 
> front & back.....whatever) Use hi-temp Permatex or even Copper coat. 
> Make sure the surface is squeaky clean!
>
Hope this helps,
Howard


On 05/27/2014 05:54 PM, jtchall at nc.rr.com wrote:
> As far as I know MSC still carries a lot of metal repair putty products. You
> may want to check their website and see what they have in stock.
>
> http://www.mscdirect.com
>
>
> John Hall
>
>
> -----Original Message-----
> From: Gunnells, Bradley R
> Sent: Tuesday, May 27, 2014 11:57 AM
> To: Antique tractor email discussion group
> Subject: [AT] Manifold to head issue
>
> I've got a question to see how others might handle this issue.
>
> I've got a Allis WD-45 that the exhaust manifold had burned out along the
> gasket on #4 cylinder. Since this tractor is new to me I don't know how long
> it was like that but I suspect years. I've torn it apart and have a new
> manifold to put on it but noticed when I ran a file across it that there is
> a bit of pitting and a slight gap around the port at the end of the head.
>
> I know the "correct" way to fix it would probably be to remove the head and
> have a machine shop weld up and surface the head. But in trying to avoid
> that time and expense I was wondering if others have found alternate
> solutions to such a problem. Would something like JB Weld dabbed along the
> pitted area when the manifold is installed hold up? This is the exhaust port
> so all pressure is going to be forcing it out so I'm not as concerned about
> sucking something into the cylinder. Any other remedies folks have tried
> that have been successful?
>
> Thanks
> Brad
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