Exhaust exit under cab
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Senior User
Joined: Mar 2006
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From: Las Vegas, NV
Exhaust exit under cab
Is there any reason why I shouldn't let the exhaust exit underneath the cab. I cut my muffler off. Then had a pipe bent to imitate the inlet and outlet locations of the stock muffler. I used this pipe to connect the factory behind passenger tire rear exit pipe to the pipe in front of were the muffler was. I drove around a few days with out the pipe and it sounded great. I put the connector pipe and had the exhaust exit behind the rear passenger wheel. I couldn't hear the exhaust so I took it off. Just want to make sure that something isn't going to happen by letting the hot gasses exit under the cab.
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Senior User
Joined: Mar 2006
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From: Las Vegas, NV
Thanks. Other than exhaust maybe getting into the cab, what about exhaust deposits on the rear end, brakes, bed, or anything else? Will there be any and is it something to worry about?
Senior User
Joined: Nov 2006
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From: Rockford Illinois
When the truck left the plant the exhaust exited at the back of the truck. I like to think that this was done for a good reason. Like suggested above, at least run it a few feet past the cab. You should still be able to hear it plenty.
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Joined: Jun 2006
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If you don't pass the axle with it, at least put a tip on it to turn the exhaust down. That is some hot stuff coming outta there, and it ain't gonna do much for the dif, fuel tank, etc, etc. It is possible to boil the fuel in the tank, which can get somewhat disastrous. If you're not getting it out from under the vehicle, at least point it downward.
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Joined: Mar 2007
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From: Simi Valley, CA
make sure its not close to anything, i had a turn down on my last truck, it turned down like just a half inch from the e brake cable...it melted right through it in about 3 months cuz the constant hot exhaust was on it, so just make sure there are no cables or anything near it, let them be a good foot or so away, but as long as your moving, the exhaust should mix with enough air that it wont bother you, but sitting parked is a different story, might get a little sleepy if you sit too long!!!!
Postmaster
Joined: Jul 2003
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From: Pittsburgh
i had a short exhaust for a while, dumped about a foot past teh cab and it actually melted the upper shock bushing out.
But as for your exhaust, it may raise some legality issues if you live in a place where you have vehicle inspections. I know around me the exhaust has to dump at least 1' past the rear of the cab on a truck to pass inspection.
Justin
But as for your exhaust, it may raise some legality issues if you live in a place where you have vehicle inspections. I know around me the exhaust has to dump at least 1' past the rear of the cab on a truck to pass inspection.
Justin
Posting Guru
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definantly use a downpipe (the reverberation off the ground adds to sound) and its much safer.
the inlet pipe and muffler on my truck have somehow seperated themsleves about 4 inches from each other, which makes for a sweet sounds, but i can smell the exhaust when sitting at stoplights with all windows up, so its getting in even though the exhaust is exiting under 1/2 way down the bed, considering that, it would really not be a good idea to have it dumping under the cab
the inlet pipe and muffler on my truck have somehow seperated themsleves about 4 inches from each other, which makes for a sweet sounds, but i can smell the exhaust when sitting at stoplights with all windows up, so its getting in even though the exhaust is exiting under 1/2 way down the bed, considering that, it would really not be a good idea to have it dumping under the cab
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