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M923 Exhaust Flapper

wsucougarx

Well-known member
6,951
67
48
Location
Washington State
If you're going that route, might as well put a short length of parachord on the cap. That'll allow you no worries in retrieving and allow you to re-use.
 

nf6x

Feral Engineer
1,630
50
48
Location
Riverside, CA, USA
Yup, good idea! Of course, if I ever buy that box of 50 of them, I'll just dump them all in the empty compartment at the end of the battery box, and never worry about not having one. ;)
 

plym49

Well-known member
1,164
171
63
Location
TX USA
That inside cap looks really nice. Do all our Deuces have the same size pipe? I'd pay $5 shipped for one if you were to put in a bulk order. Since it should mail in a regular envelope/postage, that would be about 100% margin for you.
 

nf6x

Feral Engineer
1,630
50
48
Location
Riverside, CA, USA
The deuces have a smaller exhaust pipe diameter than the M939 series 5-tons. I think it's about 3.5" diameter, vs. the 4" diameter exhaust on my M923.

The cap would melt, too, if it got hot. I suspect that after a long drive, I'd need to let the exhaust tip cool off before putting the plug in. I'm waiting for my SF97 to arrive so I can put that to the test! Hmm, I think that Caplugs also makes silicone plugs that can take higher temperatures.
 

islandguydon

Well-known member
3,724
783
113
Location
Michigan
I would think the easiest way to fix the problem would be to cut the pipe flat and install a flapper. Point it away from the truck and you should be fine. Fixed and forgotten...[thumbzup][thumbzup]
 

wsucougarx

Well-known member
6,951
67
48
Location
Washington State
The 3/8" bolt counter balanced worked as it should have. Last week, we had four straight days of good ole rain. Hail and heavy downpours at many times. Went to start the truck up and no sooty water shot out:razz:.
 
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