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(1/29/2013 8:03:22 PM)
That is a very nice looking late model 20-30 Is it a Massey Harris 20-30 or a Wallis?
The simple answer to fixing the hole in the hood is to just get a new hood from Ervin. It will look like a million bucks once it rusts up a little to match your tractor.
John, the job of putting a manifold on a Wallis is quite a challenge. The problem I have found with most is the holes in the manifold don't line up with the holes in the head. Usually the center two exaust holes are about 1/4 to 1/2 inch too high in the middle, I believe this comes from the hold down bolts being a little loose over the years and the manifold getting very red hot.
The reason the manifold is hunched up in the middle is because of the 50 pound air cleaner hanging on the end pulling down and hunching the manifold up in the middle when it is red hot. If the manifold becomes hunched up in the middle it of course will make the diverter valve bow up at the vaporizer end. I believe this is the reason we have problems mixmatching parts as each tractor has been worked and treated differently over it's lifetime.
Either way you have to be an Octipuss to put one on by your self... It is much easier to have someone help for ten minutes.
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