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Farmall & IHC Tractors Discussion Forum
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Operating tractor w/ cracked exhust manifold

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Pete

03-20-2004 17:34:43




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I let our chore tractors' exhaust manifold fill up with rain water and freeze this winter. (IH 656 gas utility) Now come time to use it and have found two major cracks. Been using it for cleaning the barn and its been doing ok, want to do some brush clearing and wanted to ask if I work this tractor hard and get it hot, am I risking burning it up with the cracks in the exhaust manifold, should I run it with the hood off? I will fix it in the future...sometime but have plenty of work for it now...is it a good idea?

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J in Pa

03-20-2004 19:12:38




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 Re: Operating tractor w/ cracked exhust manifold in reply to Pete, 03-20-2004 17:34:43  
pete, if it just cracked try this. you local napa store has what is called HOT WELD, esp for exhaust manifolds. i dont know if anyone else has this stuff but im sure napa has it. and this stuff works !! i repaired a nickle size hole in a exhaust manifold two years ago and its still holding. great stuff. give it a try. good luck

J in Pa



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Bob M

03-20-2004 18:20:17




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 Re: Operating tractor w/ cracked exhust manifold in reply to Pete, 03-20-2004 17:34:43  
Aside from the obvious heat hazard to nearby wiring, sheet metal and the like, running with a cracked manifold will cause no harm.

I've had good luck temporarily patching a cracked exhaust manifold by covering the crack with fiberglass or Nomex fabric, then securing the fabric with a worm gear hose clamp wrapped around the manifold. Not pretty, but it will keep the fire where it belongs inside the manifold until it can be replaced.

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Bob M

03-20-2004 18:19:21




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 Re: Operating tractor w/ cracked exhust manifold in reply to Pete, 03-20-2004 17:34:43  
Aside from the obvious heat hazard to nearby wiring, sheet metal and the like, running with a cracked manifold will cause no harm.

I've had good luck temporarily patching a cracked exhaust manifold by covering the crack with fiberglass or Nomex fabric, then securing the fabric with a worm gear hose clamp. Not pretty, but it will keep the fire where it belongs inside the manifold until it can be replaced.

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big fred

03-20-2004 18:08:48




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 Re: Operating tractor w/ cracked exhust manifold in reply to Pete, 03-20-2004 17:34:43  
I ran a car for quite some time with a cracked exhaust manifold. The crack was directly under the carb (4 cyl). I found it when I removed the head, the manifold came off in two pieces when it shoulda been only one. I doubt you'll have any problems if your tractor has an updraft carb, as the gas will all be below the crack.



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