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manifold moisture..

M

mike paulson

Member
about 6 months ago i installed a new exhaust/intake manifold on my 300u, i went with the up stack instead of the underslung.
i notice that when i start my tractor i get moisture bubbling up out around the muffler band clamp. i have heard of some guy's drilling a hole in the manifold to let moisture escape, does any one have info on what size hole and exactly where to drill it?
this tractor is parked indoors and i have a flapper on the end of the muffler so this moisture is not coming from rain or snow going into the exhaust.
 
(quoted from post at 10:34:48 01/12/11) about 6 months ago i installed a new exhaust/intake manifold on my 300u, i went with the up stack instead of the underslung.
i notice that when i start my tractor i get moisture bubbling up out around the muffler band clamp. i have heard of some guy's drilling a hole in the manifold to let moisture escape, does any one have info on what size hole and exactly where to drill it?
this tractor is parked indoors and i have a flapper on the end of the muffler so this moisture is not coming from rain or snow going into the exhaust.
Click to expand...

Pure and simple, that moisture is nothing more than condensation. The same stuff that drips out the tailpipe of your car or truck. It's one of the laws of nature. Don't worry about it.
 
Mike - So long as you have an exhaust stack flapper to keep rain/snow out, any moisture in the exhaust comes from exhaust condensation. As the engine warms as the manifold temp exceeds 212 deg the condensation will cease. And any moisture left inside will quickly flash off.

----

Regarding drilling a manifold drain hole: DON'T!

I've had the "pleasure" of running both a tractor and a stationary power unit with owner-installed manifold drain holes. The drains caused constant, annoying "bird chirp" sound whenever the engines were running. Also blast from the cooling fans caused exhaust fumes to be blown directly back onto the operator. Not good!
 
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