Exhaust pipe location - Defender Source
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  #1  
Old January 6th, 2016, 08:21 PM
skapegoat
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Trevor
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Exhaust pipe location

Hey guys.
I recently restored a 68 2a 88" and ran the exhaust through the implement hole in the rear.
I have a great amount of diesel exhaust (300tdi) entering the cabin and coating the back of the truck.
Do you think that that location makes this worse? Should the exhaust be to the side and angling down? Would that help.
Yes, I do have diesel injector issues that are being sorted now as well, but wondering if this exhaust location is a bad idea?
Anyone have any experience with this?

Thanks for your help.
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  #2  
Old January 6th, 2016, 08:30 PM
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I have a 2.5NA in my S3 soft top with the exhausts exiting out the side at the rear right. Fine while driving but I do get some diesel stink being drawn in on the over run.

Brett
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  #3  
Old January 6th, 2016, 08:34 PM
skapegoat
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I will add that this is a hard top with all new seals etc.

I would like to think that it would not be so full of diesel smell, which is why I am wondering about that position. Just blowing the exhaust all around in the eddies of that flat back...
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  #4  
Old January 8th, 2016, 07:45 AM
slorocco
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Dan Prasada-Rao
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I believe the side exit would be better. Your current location puts the exhaust out into a vortex behind the truck that rolls back on itself
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  #5  
Old January 9th, 2016, 03:11 PM
Greg S
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Greg Sutfin
1986 90
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Yes. You guessed it. The problem is, you have the exhaust coming out the rear. Dumping fumes into a great big low pressure area and getting sucked into the cab. Can't fix it except to route it to the side.
A "helpful" installer made mine look pretty, when told to make a side discharge, by putting a nice compound curve on it to discharge at the back corner on a 45 angle, half to the side, half to the rear. I get far too many diesel fumes and I'm sure it would be better if it was straight out the side. Many years ago I made a mistake by putting it out the implement hole and got to breathe fumes til I moved it. Sometimes it's worse by opening a side window. Mostly cured by opening the eyebrow vents but hard to keep warm then.
Spend the money and get it moved STRAIGHT out the side, you won't be happy with it til you do. Slight down tilt to keep water out.
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  #6  
Old January 11th, 2016, 05:47 PM
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Ed
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I run my exhaust to the rear (200tdi) and over time, the back panels of the truck and door get covered in a fine layer of sticky soot.

I make very little smoke, but I can imagine that someone who runs their engine on the smoky side would have a bigger problem.

I imagine a side exhaust would probably help, although I don't know how much.
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  #7  
Old January 11th, 2016, 06:12 PM
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Yes, to the side. That is the normal location on a Defender. I get no smoke inside or on the truck.
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  #8  
Old January 16th, 2016, 08:02 AM
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I never got smoke in that 90 with the exhaust out to the side Ed.
My 110 exhaust exits at the rear left angled back at about 60 degrees, no problems at all with not the most waterproof hard top.
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  #9  
Old January 16th, 2016, 08:07 AM
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Side exit here....mind you it's a 110, but haven't had any problems with fumes.

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  #10  
Old January 16th, 2016, 08:31 AM
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Quote:
Originally Posted by Matt_110 View Post
Side exit here....mind you it's a 110, but haven't had any problems with fumes.

Attachment 139536
Looks good, does the wheel get sooty?
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  #11  
Old January 16th, 2016, 08:36 AM
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Quote:
Originally Posted by Matt_110 View Post
Side exit here....mind you it's a 110, but haven't had any problems with fumes.
How does it look with the wheel arch installed?
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  #12  
Old January 16th, 2016, 08:44 AM
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Mike Hammond
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Quote:
Originally Posted by Rocky View Post
How does it look with the wheel arch installed?
How's it look from the underneath? I'd be interested to see that too for the routing. What muffler are you running if any?
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  #13  
Old January 16th, 2016, 08:46 AM
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@Mike, it doesn't affect the wheels or any other part of the body whatsoever (luckily). Here is the best photo I have when I bought it.


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@Rocky, it looks great...no clearance issues with the arches. I'm pending a respray so they are off for the moment. It took some work though. When I had the chassis made by Richard's Chassis, they actually built it around the exhaust and strengthened the access hole. The old V8 chassis had this done so they went from those measurements. I don't think it's anything a good fabricator can't do if you can stomach it. It keeps the exhaust high and out of they way. Click image for larger version

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  #14  
Old January 16th, 2016, 03:13 PM
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Mike Hammond
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Through the chassis, wasn't expecting that.
Looks good.
Not something I'm going to replicate though.
Thanks for sharing.
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  #15  
Old January 16th, 2016, 03:15 PM
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Quote:
Originally Posted by mikeslandrover View Post
Through the chassis, wasn't expecting that. Looks good. Not something I'm going to replicate though. Thanks for sharing.
Yeah I had concerns but they boxed the frame internally to give it more support. Old chassis wasn't like that though which is no bueno
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  #16  
Old January 22nd, 2016, 05:31 PM
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You need to come out the side...
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