Off Topic burned out exhaust ports on John Deere D head

I have a John Deere D with the exhaust ports burned out of or off of the cylinder head.
The attached pictures show that it is paper thin down at least 1/2". The previous owner
tried to fix it with JB Weld to no avail. The inside port on the head is good; it is just the
ones to the outside that are burned out. I don't know whether they rusted away from the
outside or burned away from the inside, or if it is a combination of both. This is a 1938
D JD, so I have a concern as to how many times the head has been hot and cooled off
and if it will accept any kind of weld or build up material.

I have inquired at Williams Cylinder Head Company in Nevada, Iowa, to see if they can
build this back up, but haven't had any response. Just wondered if anyone knows of a
way to build it back up and get a good surface on it so the exhaust manifold gaskets
will stay in? The head is in good shape otherwise, so I hate to junk it. Thanks for any
responses.


[attachment=14880]JD D Head 001.jpg[/attachment][attachment=14881]JD D Head 002.jpg[/attachment]

There are lot's of d's out there and a new used head should be readily available.

Your D head is not weldable or fixable. As the previous poster said find another, can be found at several salvage yards.

It might could be welded, but I concur that a used head is in order.

if you want to save it call Ray Shepherd in Hodgenville Ky he is an expert in cast iron repair 502 645 7444 Rays crack service

if you have experiance with electric welding with rods, take the UTP8 rod (special for cast iron) and give it a try,
clean area, preheat the area you are going to weld with the torch, then after you do a 2 inch weld stop and hamer the weld just a bit for stress relief.

here some pics of a repaired hotbox:
[attachment=14940]DSC01765.jpg[/attachment][attachment=14941]DSC01770.jpg[/attachment][attachment=14943]DSC01777.jpg[/attachment][attachment=14942]DSC01814.jpg[/attachment]

I agree a new one is the way to go if possible. Although I rebuilt a manifold off my Fifteen with a product called pyro putty three years ago and it's still holding up very well. I personally did not think it would work, but tought what the heck i'll give it a try. Saved me a bunch of money. Google it.