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Old April 5th, 2010, 02:20 PM   #1
Haggar
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Default Stacks on a truck... how to keep rainwater out?

Just wondering what people who have stacks on their truck have done to keep rainwater out.

I've heard of some people installing flappers, only to find a nice soot-water shower after a really bad (windy) rainstorm).


I don't want to have to put a coffee can over the stack every time I park. Single stack, 3.5" diameter, I believe.


I do realize that a dunes flag on the front bumper would probably fix most of my problems, but want to see other options as well :beef:
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Old April 5th, 2010, 02:26 PM   #2
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Your deuce really shouldnt have a problem since the stack is angled a little bit.
If you are really concerned about it, drill a really small hole in the lowest spot of the exhaust.
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Old April 5th, 2010, 02:30 PM   #3
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plumb in a mini 1/4" trap?
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Old April 5th, 2010, 02:41 PM   #4
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coffee cans are ghey. A cutoff growler would be much more appropriate.... with a pic of a dune flag painted on of course.
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Old April 5th, 2010, 02:41 PM   #5
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Turndown? (back)

petcock at the bottom?
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Old April 5th, 2010, 02:47 PM   #6
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most guys drill a pin hole in the bottom of the elbow so it can leak out
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Old April 5th, 2010, 02:47 PM   #7
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Quote:
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Turndown? (back)

petcock at the bottom?
Not all of us have pet cocks.
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Old April 5th, 2010, 02:53 PM   #8
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Quote:
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most guys drill a pin hole in the bottom of the elbow so it can leak out
done that many times on the real trucks...pickups should not have stacks, IMO
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Old April 5th, 2010, 02:59 PM   #9
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Turn it horizontal into a sidepipe. Drive next to treehuggers.
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Old April 5th, 2010, 03:03 PM   #10
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Sounds like maybe a 1/16" pinhole on the J-pipe might be in order. Thats only about 18" downstream of the turbo.
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Old April 5th, 2010, 03:04 PM   #11
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Quote:
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Turn it horizontal into a sidepipe. Drive next to treehuggers.
x2. I love mine. Dumps just before the rear tire. No muffler and shorter total distance than a stack. I don't see the functional purpose of a stack unless you are pouring coal every mile you drive.
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Old April 5th, 2010, 03:18 PM   #12
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the tiny amount that gets in there will 1. blow out when it's first started or 2. evaporate when it gets warm.
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Old April 5th, 2010, 05:00 PM   #13
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This is the type of situation that would require two dune flags
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Old April 5th, 2010, 05:06 PM   #14
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This.

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Old April 5th, 2010, 05:22 PM   #15
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You could have that one guys girlfriend sit on it each time you park it, I heard she likes sticking things in her.
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Old April 5th, 2010, 05:44 PM   #16
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This is how its run now, the pipe goes and makes a big J-bend in the fender. Several people have had a soot-water explosion after big rainstorms. A couple guys who've cut it straight/flat across the top and installed flappers, that black water flies all over you if you have the cab top down...

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Old April 5th, 2010, 07:57 PM   #17
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Anyway to move stack so it is behind the cab? Not sure if that is an option or not.
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Old April 5th, 2010, 07:59 PM   #18
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a west wind is probably most common so why dont you just park the truck facing north.
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Old April 5th, 2010, 08:17 PM   #19
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I'll get a pic of mine tomorrow. Mine never blows soot.
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Old April 5th, 2010, 09:40 PM   #20
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I keep my duece parked inside and that solved all of it. I know not everyone has a barn or garage big enough to keep a duece in, so I used an old 2 liter with the top cut off when I used to have to park it outside. A little od green paint and it blends right in and is not such an eye sore when it's parked. Also the advantage to the plastic 2 liter over a coffee can is that when you forget to take it off before starting, it will not hurt anything when it goes flying. I bounced the 2 liter off the side of the garage several times on forgetful start-ups. The PO must have never covered it and it was not long before my J pipe was self draining through a big old rust hole. After replacing the J pipe I made sure to keep it dry.
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