4" or 5" straightpipe?
Elder User
Joined: Oct 2004
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Originally Posted by RedDragon
I was thinking I would order a piece of 5" tubing and a 4"-5" adapter to go on at the DP, then exit in front of the rear tire w/ an elbow. Think that will work, and/or clear the tranny crossmember?
I bought a 45 degree elbow to exit in front of the rear tire and it just clears the framerail, as the frame starts to go up. This puts the tip a little closer to the tire than I would like. A 90 degree might work better for you.
Oh yeah if your psd is a black smoker-get ready to have a black wheel and tire!
Senior User
Joined: Mar 2004
Posts: 183
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From: La Vernia, Texas
I have a 5" system on my truck with a straight thru muffler and I love it. When the EBPV kicks in it is loud outside the truck however inside it really doesn't sound that different. What has really made me appreciate the 5" system is the truck's ability to cruise down the road at 80 or 90 mph at the engine still pulls. Before the 5" install the truck felt restricted. Of course the Edge Juice helps too...just wish I could keep my foot out of it .....diesel is darn expensive.
Posting Guru
Joined: Aug 2004
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From: Rural Central Ohio
Originally Posted by vancouverpower
>Where do you all get your straightpipes!?? LOL Nobody here in my neck of the >woods can make one. Every shop I've called can't do 4 inch piping in their >mandrel and can't make straight pipes. Is the superduty exhaust straight >enough to just run a pipe to the rear axle and buy a pre-bent elbow?
Yep go to the big truck shop and look around. Well at least with a 6 speed, I haven't looked at a auto yet.
Yep go to the big truck shop and look around. Well at least with a 6 speed, I haven't looked at a auto yet.
Senior User
Joined: Aug 2004
Posts: 297
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From: Lewiston, Idaho
Originally Posted by edub32
Where do you all get your straightpipes!?? LOL Nobody here in my neck of the woods can make one. Every shop I've called can't do 4 inch piping in their mandrel and can't make straight pipes. Is the superduty exhaust straight enough to just run a pipe to the rear axle and buy a pre-bent elbow?
http://shop.airflowonline.com
Senior User
Joined: Apr 2003
Posts: 424
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From: Northern IL
You can get the "over the axle" pipe from Advanced Auto. Walker/Dynomax Super Duty replacement pipe, its 4" and runs about $40-$45. other then that its just straight 4" exhaust pipe bought at a big truck parts store. 5' of 4"dia. regular steel pipe runs around $30. The SD over the axle pipe will even work on the OBS trucks with a little tweaking of the hanger hook. I did this exhaust on my 96, & my 2000. The 2000 I added a MBRP 4" muffler.
Posting Guru
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From: Rural Central Ohio
Originally Posted by Ggg6
You can get the "over the axle" pipe from Advanced Auto. Walker/Dynomax Super Duty replacement pipe, its 4" and runs about $40-$45. other then that its just straight 4" exhaust pipe bought at a big truck parts store. 5' of 4"dia. regular steel pipe runs around $30. The SD over the axle pipe will even work on the OBS trucks with a little tweaking of the hanger hook. I did this exhaust on my 96, & my 2000. The 2000 I added a MBRP 4" muffler.
Senior User
Joined: Apr 2003
Posts: 424
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From: Northern IL
The OTA pipe is mandrel bent and it will be a special order. I had to order mine too, the tip exits at a angle (about 45°) just in front of the bumper on the OBS trucks. And it will also work with the spare in its place under the rear tank. I will look for a part #.
The only other odd item to get is a 3' of rod about 3/8" dia to make hangars out of. Cut, bend and weld them to suit. Also some 4" S/Steel band clamps instead of the 4" u-bolt clamps.
The only other odd item to get is a 3' of rod about 3/8" dia to make hangars out of. Cut, bend and weld them to suit. Also some 4" S/Steel band clamps instead of the 4" u-bolt clamps.
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Posting Guru
Joined: Aug 2004
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From: Rural Central Ohio
Originally Posted by Ggg6
The OTA pipe is mandrel bent and it will be a special order. I had to order mine too, the tip exits at a angle (about 45°) just in front of the bumper on the OBS trucks. And it will also work with the spare in its place under the rear tank. I will look for a part #.
The only other odd item to get is a 3' of rod about 3/8" dia to make hangars out of. Cut, bend and weld them to suit. Also some 4" S/Steel band clamps instead of the 4" u-bolt clamps.
The only other odd item to get is a 3' of rod about 3/8" dia to make hangars out of. Cut, bend and weld them to suit. Also some 4" S/Steel band clamps instead of the 4" u-bolt clamps.
Senior User
Joined: Apr 2003
Posts: 424
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From: Northern IL
Originally Posted by edub32
Thanks for looking for the part number for me. So this will still fit on the superduty right?
Senior User
Joined: Apr 2004
Posts: 316
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From: Roaring Branch, PA
Originally Posted by MESTRKR
Where can you buy just a 4" downpipe. I can't seem to remember a site with just an aluminized downpipe that's fairly cheap. Thanks.
E
E
http://www.shopdiesel.com/index.cfm/...gory_id/59.htm
http://www.hottexhaust.com/All%20Diesel.htm
http://www.performancetruckproducts....-products.html
http://www.dieselsitetoo.com/index.a...S&Category=237
http://www.motorhaven.com/home.php
There are many others too. Just shop around for specials.
Laughing Gas
Joined: May 2003
Posts: 1,148
Likes: 1
From: Richmond, VA
Take care in dumping the exhaust in front of and close to the tire. I have read of someone doing that and reporting accelerated wear for that tire and discoloration of the wheel.
I plan to go 4", tipped and follow the stock pipes path.
Reg
I plan to go 4", tipped and follow the stock pipes path.
Reg
Elder User
Joined: Oct 2004
Posts: 602
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Originally Posted by afinepoint
Take care in dumping the exhaust in front of and close to the tire. I have read of someone doing that and reporting accelerated wear for that tire and discoloration of the wheel.I plan to go 4", tipped and follow the stock pipes path.Reg
Senior User
Joined: Apr 2004
Posts: 316
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From: Roaring Branch, PA
Someone else reported on here a while ago that when they dumped their exhaust in front of their rear wheel they said that they had much more rust on that side than the other when they took their wheels off, and had a hard time getting their rotor off of that side compared to before the exhaust change. Take it for what it's worth, but I will never exit my exhaust in front of my wheel.