Found True Dual Exhaust on an XK! - Jeep Commander Forums: Jeep Commander Forum
Exhaust Questions or advice about exhaust systems? This is the place...

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post #1 of 21 (permalink) Old 10-10-2009, 01:19 PM Thread Starter
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Found True Dual Exhaust on an XK!

I have looked many times at the possibility of adding true dual exhaust without losing ground clearance. I started looking around and found this picture. I don't think its real....Don't know how anyone would have got a shot of their XK like this...But it made me think.

I did some measurements and found the stock muffler is 30 inches long 12 inches wide and 6.5 inches tall. Looking at some of the Flowmaster 44's (which would be way loud I know) and they are only 13 inches long, 9.75 inches wide and 4 inches tall. Doesn't leave a whole lot of room but it would fit. I also have a couple of Glass Packs that i had put on my mustang in High School. They are only 4 inches round and 18 inches long. Plenty of room.

So i thought...this could really be done...but I am worried about losing low end torque. It would increase HP but I'm not real interested in going faster. Just having more power without it feeling slushy at low RPM. The pipes coming off the headers look to be about 2.25 inches in diameter. I wonder what running 2.25 inch pipes all the way back would do?

What do you guys think?
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post #2 of 21 (permalink) Old 10-10-2009, 01:48 PM
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Looks as tho it could be legit...in any case the theory is there and it would probably work


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post #3 of 21 (permalink) Old 10-10-2009, 02:56 PM
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This is indeed a true dual but you could also use a single muffler with dual inlets and dual outlets. It would maintain the dual exhaust performance and also act like an H-pipe to balance the back pressure. It would also eliminate the space issue for the muffler. GREAT FIND!!!!

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post #4 of 21 (permalink) Old 10-10-2009, 03:18 PM
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The rear drivers side has a big black box right where that pipe comes out. Not to say you couldn't move it to the inside of the rail but then the spare tire would have to go.

Good find though! I'd love to see someone do it.

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post #5 of 21 (permalink) Old 10-10-2009, 04:08 PM
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Quote:
Originally Posted by jcoulter View Post
The rear drivers side has a big black box right where that pipe comes out. Not to say you couldn't move it to the inside of the rail but then the spare tire would have to go.

Good find though! I'd love to see someone do it.
That would be the charcoal canister. I just replaced mine the other day. Im sure that it can easily be relocated inside the spare tire area.




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post #6 of 21 (permalink) Old 10-10-2009, 04:37 PM
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Actually, you could ditch the resonators.

Rob


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post #7 of 21 (permalink) Old 10-10-2009, 05:56 PM
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OK so it looks as tho it may be photoshoped but it still looks do-able...some one try


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post #8 of 21 (permalink) Old 10-10-2009, 09:10 PM
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Quote:
Originally Posted by CanadianCommander View Post


OK so it looks as tho it may be photoshoped but it still looks do-able...some one try
If thats photoshopped then that person has some skills.




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post #9 of 21 (permalink) Old 10-11-2009, 06:20 AM
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Sounds and looks do-able. 2.25 pipe should be fine, seeing how other 4.6-5.0 liter motors usually run 2.25 dual exhaust. I would try to incorporate an "X" pipe into the mix if at all possible. Or as suggested (Adamag25) in another post, a dual in/out muffler, which will help with the "scavaging" of the exhaust. To make things easier, not as "cool", but have the exhaust exit the same side of the XK. I actually like the look of the stock tailpipe, where it really does not show, giving a "clean" look. I may have mine done around X-mas when $$ gets better.

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post #10 of 21 (permalink) Old 10-11-2009, 06:57 AM
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Quote:
Originally Posted by robby View Post
Actually, you could ditch the resonators.

Rob
Does that make any difference in response or sound ? ,, any negatives ?

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