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View Full Version : Dual exhaust for WK??


TimmyB
06-20-2009, 11:57 AM
I was behind a WK awhile back that had a dual exhaust, it wasnt in the stock location but more mid bumper area on both sides. Me, I want to add another pipe coming out the opposite side. I have the 3.7 V6. What is needed, as in can I just have the shop weld on another pipe from the existing tail pipe after the muffler or would I need a dual output muffler? I have the magnaflow SS catback right now, and would like to keep the muffler I have now if possible. Plus would this even work, with back pressure and sound wise? Im doing this mainly for looks, but also want it to sound right.

Scottina06
06-20-2009, 12:27 PM
look for a post by Marlin....it is very tight on the drivers side becasue of the fuel tank...but it can be done by an excellent exhaust man. It will probably cost a pretty penny as well. If you were close to me i have an exhaust genious in my little town.....

Scottina06
06-20-2009, 12:27 PM
forgot to add....performance wise on the 3.7 I'm gonna guess the single is the best way to go.....

TimmyB
06-20-2009, 12:45 PM
look for a post by Marlin....it is very tight on the drivers side becasue of the fuel tank...but it can be done by an excellent exhaust man. It will probably cost a pretty penny as well. If you were close to me i have an exhaust genious in my little town.....


I just wish I never got this magnaflow cat back because of price. I went to an exhaust shop owned by a freind of a friend and he put it on for 50 bucks. But he told me he could of made me one for half price. I def like the look of dual exhaust, having it look symetrical in the rear. I have the srt repo's on so I can take the spare out to use that space. I dont plan on switching in winter really, srt8's dont right?

Scottina06
06-20-2009, 01:02 PM
most srt guys dont...unless they live in a harsh climate. Do you have the runflats? Thats why the SRT doesnt have the spare...those tires can be driven on completely void of air for 50 miles.

dreamer1213
06-20-2009, 01:18 PM
Its not worth the trouble, time, or money Timmy....Keep it the way it is....and spend that money on something else..just my .2 cents..

TimmyB
06-20-2009, 01:19 PM
most srt guys dont...unless they live in a harsh climate. Do you have the runflats? Thats why the SRT doesnt have the spare...those tires can be driven on completely void of air for 50 miles.


No runflats, but I have triple A plus. tows me 100 miles each time. lol

TimmyB
06-20-2009, 01:21 PM
Its not worth the trouble, time, or money Timmy....Keep it the way it is....and spend that money on something else..just my .2 cents..


Spend it on what though, ive done almost everything I want to it so far. I think a dual exhaust would be sick on her. lol

Chris
06-20-2009, 05:04 PM
I had a thread about this on the 'other' site.. Marlin had posted some nice shots of what kind of piping is required on the drivers side, but damn did it look nice :) Only way to know for sure is to go scope out some shops and see what prices they give you, or if the guy can even work the magic! I still need to go to the shop down the street and see what's up with this one guy I know. I will post back later on what price he gives me and whatnot. Now, I do forget if Benno had 2 mufflers, or a 1 in 2 out setup.

dreamer1213
06-21-2009, 04:54 AM
Ben has a true dual set up..2 of everything..including mufflers...heres the tread if you like Timmy:

http://www.jeepgarage.org/showthread.php?t=253

Ohh...ok...I think it would look good too...if you want it...you know you're gonna get it...LOL!

TimmyB
06-21-2009, 12:39 PM
Thats def alot of work and prob $$. Plus it doesnt look like the rear differential cover would unbolt that easy if needed with the pipe right there.

Scottina06
06-21-2009, 12:47 PM
it would def. be tight

NHWK05
06-21-2009, 01:17 PM
It can be done. The shop that did my side exhaust said he could do it but it would be difficult. Best/easiest is ditch the spare tire. I have not decided if i am gonna work around the tire or take it out when i have to re do my exhaust. I will prolly pull the spare out and only bring it on long trips, in the back.

TimmyB
06-21-2009, 05:33 PM
I think im leaving the 20's on year round so my spare is not needed. And even if I got a flat now I still need to get it towed because of the spare tire size difference, and im not about to buy another srt rep rim and same tire just for a spare. Gotta luv Triple A Plus, with the 100 mile tow... Def worth the one year membership. My buddy locked his keys in the car recently so he used mine and they came and unlocked his door. Funny thing is the guy never even asked for ID or the triple A card. We could of been standing next to someone elses car and the guy would of broke in for us. Lol

TimmyB
06-21-2009, 05:35 PM
Oh, back to what I was gonna say. If I need to add another muffler im gonna pass for now. If it was as easy as welding on another pipe off the existing tail pipe and run it over to the left i'd do it. Im still going tomorrow to see what the shop says about it.

Marlin
06-21-2009, 05:46 PM
Thats def alot of work and prob $$. Plus it doesnt look like the rear differential cover would unbolt that easy if needed with the pipe right there.

Rear cover comes off no problem ;)

I think im leaving the 20's on year round so my spare is not needed. And even if I got a flat now I still need to get it towed because of the spare tire size difference, and im not about to buy another srt rep rim and same tire just for a spare. Gotta luv Triple A Plus, with the 100 mile tow... Def worth the one year membership. My buddy locked his keys in the car recently so he used mine and they came and unlocked his door. Funny thing is the guy never even asked for ID or the triple A card. We could of been standing next to someone elses car and the guy would of broke in for us. Lol

AAA won't pick you up if I'm 80 miles up a beach on an island.... anyways, putting the standard spare on wouldn't be an issue for you , the rolling diametre is close enough. I run 22's and have driven 100's of miles with the std spare on one corner without a problem.

Oh, back to what I was gonna say. If I need to add another muffler im gonna pass for now. If it was as easy as welding on another pipe off the existing tail pipe and run it over to the left i'd do it. Im still going tomorrow to see what the shop says about it.

Maybe just keep your original pipe hidden up behind the bumper and add some fake dual tips somewhere??? never have to clean them then either! lol

TimmyB
06-22-2009, 05:12 PM
I was thinking about installing a fake pipe, but seriously how lame is that??? lol. I really dont see why it wouldnt work just tacking on another pipe off the existing tail pipe, since its after the muffler anyways. And I dont drive on trails or way off on the beach anywhere that triple A wnt be able to reach me, or if i were i'd make them bring the wrecker out to get me. lol.

On my previous GC I just got the front tires replaced, ended up being slightly diff sized tires because they were a great deal slightly used, but just driving out of there it felt like the rear was pushing the front, tires were chirping. So i'd be afraid of f-ing up the tranny putting the spare on even for a short distance. The other thing that sux is these tires were special order since no one has them in stock around me. I'd be carless for a day or two if i ever got a flat. i got rental coverage though, so no worries.

DevssrT
06-22-2009, 05:23 PM
Can it be done? Yes...question is waht engine are you using?...if its the 3.7, im pretty sure youll see a decrease in perfomance dude...

Marlin
06-22-2009, 05:31 PM
I was thinking about installing a fake pipe, but seriously how lame is that??? lol. I really dont see why it wouldnt work just tacking on another pipe off the existing tail pipe, since its after the muffler anyways. And I dont drive on trails or way off on the beach anywhere that triple A wnt be able to reach me, or if i were i'd make them bring the wrecker out to get me. lol.


Sure a fake tip is lame, I was just saying it's easier to do that ;)

You could keep everything standard in front of the diff, but aft of the diff will need to be custom. Have you been under and had a look my friend? If you have you'll know that TWO new tail pipes will be needed because you cannot replicate the passengers side on the driver's side in the same position.

Chris
06-22-2009, 06:26 PM
I think he wants to ditch the spare, and just cut in another pipe and run across where the spare would have been, to the new set of tips on the drivers side? Correct me if i'm wrong Tim, but that doesn't sound too bad if you really don't need the spare.

Matt
06-22-2009, 06:30 PM
Spend it on what though, ive done almost everything I want to it so far. I think a dual exhaust would be sick on her. lol

Invest it :thumbsup:

Chris
06-22-2009, 06:31 PM
Or he could send us some Matt!

NHWK05
06-22-2009, 06:41 PM
I do not see any reason whey putting a Y pipe after the muffler would not work thats what scott did on his and if i ever change mine to dual tips like the srt8 then i will do the same, Y after muffler and then dual pipes back. Just keep it at a 2.5 " diameter pipe or less, dont go 3". then do tips of your choice.

Matt
06-22-2009, 06:48 PM
Or he could send us some Matt!

That works for me too!! :D :p

Megatron
06-22-2009, 06:50 PM
I agree with saving some money!

TimmyB
06-23-2009, 07:01 PM
I def have to admit, after all the $$ I put into it so far, I hate only having a single pipe out the back.. I know im anal, but its really bugging me now. I saw an M5 today, dual pipes on each side and it was sick.

I'll tell you what I'd luv to do, and have been searching ebay every day now for it. Is get the Limited rear bumper that has the cut out in the middle and re-routing my tail pipe there with dual tips. So it kinda mimics the srt, and its symetrical. The single tip bug me.

Dylans3960ccs
06-23-2009, 07:06 PM
I'd say you should go with something less than a 2 inch pipe all the way back and chose a mean exaust tips for it.

NHWK05
06-23-2009, 07:36 PM
I def have to admit, after all the $$ I put into it so far, I hate only having a single pipe out the back.. I know im anal, but its really bugging me now. I saw an M5 today, dual pipes on each side and it was sick.

I'll tell you what I'd luv to do, and have been searching ebay every day now for it. Is get the Limited rear bumper that has the cut out in the middle and re-routing my tail pipe there with dual tips. So it kinda mimics the srt, and its symetrical. The single tip bug me.

Thats what i was thinking of doing if i ever change mine. But you dont need a limited bumper to do it.

All you need is the trim for the cutout. When the dealership installs a trailer hitch they cut the bumper and put the gray plastic trim bezel on to cover the cut edge. You can buy that, (its trimmed out to fit the hitch) you can modify it to be fully open like an srt8 and then do your tips. A guy down the road from me has a v6 laredo with a 2" receiver and the same stock cutout for the hitch. just buy that and your good to go.

Look at this link. just buy the bezel and cut it out your self.
http://www.justforjeeps.com/hitchreceivers2.html

its the same for commander and Wk. But its not cheap.

http://cgi.ebay.com/ebaymotors/Jeep-Commander-Hitch-Receiver-Installation-Bezel_W0QQcmdZViewItemQQ_trksidZp3286Q2em20Q2el111 6QQhashZitem5ad15b4e2cQQitemZ390059478572QQptZMoto rsQ5fCarQ5fTruckQ5fPartsQ5fAccessories

TimmyB
06-24-2009, 03:57 PM
Thats what i was thinking of doing if i ever change mine. But you dont need a limited bumper to do it.

All you need is the trim for the cutout. When the dealership installs a trailer hitch they cut the bumper and put the gray plastic trim bezel on to cover the cut edge. You can buy that, (its trimmed out to fit the hitch) you can modify it to be fully open like an srt8 and then do your tips. A guy down the road from me has a v6 laredo with a 2" receiver and the same stock cutout for the hitch. just buy that and your good to go.

Look at this link. just buy the bezel and cut it out your self.
http://www.justforjeeps.com/hitchreceivers2.html

its the same for commander and Wk. But its not cheap.

http://cgi.ebay.com/ebaymotors/Jeep-Commander-Hitch-Receiver-Installation-Bezel_W0QQcmdZViewItemQQ_trksidZp3286Q2em20Q2el111 6QQhashZitem5ad15b4e2cQQitemZ390059478572QQptZMoto rsQ5fCarQ5fTruckQ5fPartsQ5fAccessories


AWESOME, thanks for that info, I never even knew about it until know.

TimmyB
06-24-2009, 04:08 PM
So now I can buy that trim for 62 bucks, route the tail pipe to the center and get a dual tip. Im sure that wont effect performance since im not adding a whole other tail pipe that way. I was just under the car and its def do-able running the pipe over to the center using the stock hanger thats there. I might even try it myself, go to the auto parts store and buy all the elbows and straight pipe with clamps. Shouldnt be more than 1 bill for everything, the trim and dual tip will cost the most im thinking.

I was just thinking back to my previous 94 GC, that exhaust had so many clamps and sections of pipe from me fixing all the rotted and rusted sections all the time. I even used that muffler repair kit for my cataletic converter that was about to fall off.

Im noticeing what appears to be slight rust at some of the welds on my SS exhaust now, is that normal??? I thought the SS catbacks were not supposed to rust. I only had it on for a few months now, should I be going under and cleaning it once in awhile, or sand it and give it a coat of high temp spray?

NHWK05
06-24-2009, 06:44 PM
They only way to avoid that is to be 100% sure they used stainless steel welding rod and unfortunately thats not always the case. My exhaust is all stainless steel but the welds still rust and they painted them with high temp black paint. i figure by the time it gets bad i will want something new.

My only suggestion for the exhaust, Do a dual output muffler or a Y pipe after the muffler of choice, then stick to a 2.25" pipe or a 2" pipe all the way back so you dont loose any performance from having too big a pipe. then do a set of dual 3" or 4" tips.

TimmyB
06-25-2009, 04:05 PM
I wne to the auto store and bought a bunch of 2.5" straight pipe, some 45's, 90's, and clamps. Im going to try a mock-up under there to see if my idea will work. Cut the tail pipe right after the hanger in the rear and try to get it over to the middle of the bumper where that hitch trim will be cut in. I found a few dual exhaust tips on ebay i think would look good on it.

Chris
06-25-2009, 07:44 PM
cool man lets see some pics!

TimmyB
06-25-2009, 09:30 PM
cool man lets see some pics!


I did more work on my stereo tonight. Prob saturday I will get under there and see if the pipes will work. If they do i have to order a dual tip before I start cutting into the pipe.