Re: Bad manifold??? AKA : (How I spent Christmas

Posted by Michael Soldan on December 28, 2003 at 06:43:20 from (216.46.130.95):

In Reply to: Bad manifold??? AKA : (How I spent Christmas Day posted by AC on December 28, 2003 at 05:22:58:

A C, My experience with manifolds is that the slightest crack can cause problems and the rough rusted pitted surfaces of the manifold will change and restrict flow. I was messing with an H and decided I wasn't going to fool around and I bought a brand new manifold($190 Canadian)...that tractor ran like new and the difference was incredible, I believe an older tractor is only as good as its manifold. You can check your manifold for leaks by holding a propane or acetylene torch( not lit!)around the surfaces of the manifold and let the gas flow around the seams to check for warp or gasket leak. If there is a leak the engine will smooth out, if there is no leak the engine will give no noticable change as it runs. Your flow of the manifold will be critical and as I said if its really pitted and pock marked the flow will be changed significantly and it will affect the performance of each cylinder. I was really pleased with the manifold I got and the performance of the tractor. The old manifold was cracked out in several places and the tractor sounded like a Deere John, it is now a good running reliable tractor that starts easily and works its share around the farm at hay time. When you go to remove the old manifold heat the nuts red hot , then douse them with cold water and they should come off with ease. new gaskets are available from lots of places ( even NAPA). My Dad's M sat in the barn for ten years before I got it running. I had to do some manifold work on it. I removed the manifold and took it to a machine shop where we reworked the top of it and put a new spout on, the rest of the manifold wasn't that bad, new gaskets and cleaned the points and I fired her up on the second lift of the crank. Good luck AC with the M, I don't know everything, I'm just sharing what has been my experience and what has worked for me....Mike in Exeter Ontario

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