Manifold

MN Jerry · Jul 16, 2009

Pardon me on this one: Don't know if this can even be done without damage to the tractor so I am asking after I put the tractor back together engine wise, as I am still working on the tin getting it ready for paint. But back to the question can I try and start the engine less one exhaust manifold note this is to see if it will fire and idle out I have yet to find a manifold for the tractor 1946 H
Thanks and hope that this question can be answered. the other option and this just popped in my mind is to put the old but broken one back on hole in two places plus being broken between #'s one and two cylinders so the manifold is in tough shape .

scott mcintosh · Jul 16, 2009

By a new one they are not that expensive this site sells them worthington ag parts to name a few.Less then 200.00 should get one to your door.Scott

MN Jerry · Jul 16, 2009

Guess what I was asking is can I for the moment or two that it takes to find out if the tractor fires in all four cyl. and has some compresion can it be ran without the manifold being in place yes I realize that I need a new manifold wether it be from anothe H or a new one from a dist.

Andy Motteberg · Jul 17, 2009

Look for a old manifold, they are made better than the new junk.

bc · Jul 17, 2009

I used to do it with the 283 in my 57 chevy. As long as you have oil and water in it, it can't hurt to run it for a little while. All the exhaust manifold does is combine the exhausts into one pipe for muffler and create some back pressure at the same time. It may not idle very well or smoothly as it loudly cackles away. I suppose if you ran it quite a while it may be hard on the valves. You ever see the short pipes that stick up on some dragsters. Is the exhaust on the same side as the intake and fuel lines? You can expect some hot sparks and carbon flying out of there.

John M · Jul 17, 2009

I dont know how it would run and idle without the manifold. The manifold is intake and exaust in one unit. If yours is broken on the exaust side, a few minutes wouldnt hurt.

John G. Hasler · Jul 17, 2009

You don"t need to get it to fire to check for spark and compression. If it has both it will fire when it gets fuel. Check for spark in the obvious way. Since you have the manifold off you should be able to check for compression by putting your hand over each exhaust port in turn while cranking. That will tell you as much or more than getting it to fire would.

Manifold

MN Jerry

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scott mcintosh

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MN Jerry

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Andy Motteberg

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bc

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John M

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John G. Hasler

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