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Old 09-15-2016, 10:47 AM
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Exhaust/Exhaust Spacers

So I ordered a 2.5" Rock Krawler X-Factor lift and I'm aware I'll need to do something with my exhaust system. I know Spacers are common, but my question is would it be better to get a new exhaust? If so what kind, If not which spacer should I get?

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Old 09-15-2016, 10:52 AM   #2
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I tried asking this already, no luck...

It seems that any aftermarket exhaust is still gonna need spacers. The best way to have a new exhaust without needing spacers is to get one custom fabricated. My plan is to get the resonator and muffler from my favorite bolt-on exhaust, and have a shop custom run everything after the stock cats, that way I can move the crossover without using spacers. But we'll see what the estimates look like first.

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Old 09-15-2016, 10:56 AM   #3
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Quote:
Originally Posted by Peacester View Post
So I ordered a 2.5" Rock Krawler X-Factor lift and I'm aware I'll need to do something with my exhaust system. I know Spacers are common, but my question is would it be better to get a new exhaust? If so what kind, If not which spacer should I get?
bolt on the aFe y-pipe. $225 for the automatic one. done. if you go spacers TeraFlex has some for like 50 bucks but the y-pipe is a more correct way to do it.
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Old 09-15-2016, 11:09 AM   #4
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Yep a lot of people go this route the custom system.
It is 2.5" in/out (added info)
On our systems we go from the Y back and leave the loop in the exhaust. So the options are a spacer, a new driveshaft, or like what we offer a new cross over pipe.


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I tried asking this already, no luck...

It seems that any aftermarket exhaust is still gonna need spacers. The best way to have a new exhaust without needing spacers is to get one custom fabricated. My plan is to get the resonator and muffler from my favorite bolt-on exhaust, and have a shop custom run everything after the stock cats, that way I can move the crossover without using spacers. But we'll see what the estimates look like first.
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Old 09-15-2016, 11:38 AM   #5
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Spacers are cheap..however if you have skids moving the exhaust might bump you into the skids causing them to rattle. Common. I removed my spacers and put in a new driveshaft. Was going to need it eventually anyway.
THEN I put in an AFE. LOVE it. My Jeep doesn't sound like a mini-van anymore. Don't get me wrong- it'll never be a V8. But huge improvement- not too loud, just right.
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Old 09-15-2016, 11:41 AM
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I removed my spacers and put in a new driveshaft. THEN I put in an AFE. .
What driveshaft did you go with? What AFE, the y pipe?
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Old 09-15-2016, 11:43 AM
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Originally Posted by DynoMax Exhaust View Post
On our systems we go from the Y back and leave the loop in the exhaust.
How much does this run for?
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Old 09-15-2016, 11:44 AM   #8
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Hindsight I would have added a drive shaft instead of doing exhaust spacers.
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Old 09-16-2016, 08:20 AM   #9
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Spacers are cheap..however if you have skids moving the exhaust might bump you into the skids causing them to rattle. Common. I removed my spacers and put in a new driveshaft. Was going to need it eventually anyway.
THEN I put in an AFE. LOVE it. My Jeep doesn't sound like a mini-van anymore. Don't get me wrong- it'll never be a V8. But huge improvement- not too loud, just right.
the way i would do it too for sure.
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Old 09-16-2016, 10:59 AM   #10
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Depends on the system, but usually $180ISH to sub-$400.
Then the rebate is based on how much the the system cost.
Thanks!

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How much does this run for?
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Old 09-16-2016, 12:15 PM   #11
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What driveshaft did you go with? What AFE, the y pipe?
Pretty sure he was referring to an AFE exhaust - not a y-pipe. Just a y-pipe wouldn't appreciably alter the exhaust sound.
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Old 09-17-2016, 04:54 AM   #12
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I installed the Rugged Ridge spacers. They were simple to install and provided the clearance needed and are half the price of most spacers. The bolts were a bit long in the kit but grabbed a couple bolts at the hardware store for a few dollars.

Rugged Ridge Exhaust Spacer Kit for 12-16 Jeep® Wrangler & Wrangler Unlimited JK with 3.6L | Quadratec
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Old 09-17-2016, 05:09 PM   #13
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So much misinformation in this post. Not all of it, but some. The below is more accurate than some of what I read above:

You can use spacers, but keep in mind that the spacers will lower your passenger side exhaust slightly and it may hang BELOW your transmission cross member. This means skid plates will hit the exhaust or the exhaust will hit something you drive over. However, on my 2-door and my aftermarket trans cross member, it is not an issue. I was able to install a skid plate with just an additional washer between it and the cross member. There's about 3/16" between the exhaust and the skid plate.

If you choose not to use spacers you have several options. If you have a 4-door, AFE makes a Y-Pipe replacement that moves the exhaust cross over BEHIND the trans cross member, thus eliminating any contact with the drive shaft.

If you have a 2-door, Borla and Magna-flo both make Y-Pipe replacements that will bolt to the stock flanges and move the exhaust behind the cross member. These are tricky on 2-doors as the exhaust gets a bit close to the gas tank. Heat reflective tape cures that.

You can also take your jeep to a custom exhaust shot and have them make something custom for you.

The very last, and WORST option, is what I have seen AEV do on their 2-door models. They cut out a piece of the exhaust cross over and weld in a short piece that swerves below the drive shaft, reducing ground clearance in that area. Unless you never take your Jeep off road, I would never consider this option.

And on another related note, I have an 3.5" X-Factor lift on my 2-door (Bilstein 5100 shocks) and an Adams Driveshaft up front. If I didn't have spacers, my drive shaft would hit my exhaust.
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Old 09-17-2016, 10:16 PM   #14
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I could be wrong, but I was under the impression that you didn't have to worry about driveshaft problems til you got more than 3.5" of lift?
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Old 09-17-2016, 10:21 PM   #15
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Originally Posted by RubiTruxBen View Post
bolt on the aFe y-pipe. $225 for the automatic one. done. if you go spacers TeraFlex has some for like 50 bucks but the y-pipe is a more correct way to do it.
This!! I have it on my JKU and did not have to drop my skids to clear the exhaust (with an Adams 1310 driveshaft). I can highly recommend it.
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Old 09-17-2016, 10:24 PM   #16
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I could be wrong, but I was under the impression that you didn't have to worry about driveshaft problems til you got more than 3.5" of lift?
I have a MC 3.5" Gamechanger lift and aftermarket drive shafts and I still hit the exhaust with the front driveshaft at full droop. I know several others that have the same issue with 3.5" lifts. I used the AFE Y-Pipe relocation kit to solve the problem.
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Old 09-17-2016, 10:59 PM   #17
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I could be wrong, but I was under the impression that you didn't have to worry about driveshaft problems til you got more than 3.5" of lift?
totally dependent on length of front shocks.
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Old 09-17-2016, 11:02 PM   #18
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this is what the dyno max/rancho piece looks like when added to the stock y-pipe. I would let it go cheap sorry for the shameless plug.
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Old 09-18-2016, 05:30 PM   #19
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this is what the dyno max/rancho piece looks like when added to the stock y-pipe. I would let it go cheap sorry for the shameless plug.
That's a loop that drops the exhaust below the drive shaft, thus, losing ground clearance, right?
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Old 09-18-2016, 05:36 PM   #20
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It's not a loop but it drops the exhaust cross over a bit below the cross member. It's not much but for rock crawling I worried. It's still above the small cross member.
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Old 09-19-2016, 11:55 AM   #21
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Ah. Thanks for the picture. Yeah, that small "cross member" is really what Jeep wants people to think is a transmission pan skid plate. They only put them on automatics. Mine was ditched a long time ago when I put on the engine skid.
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Old 09-19-2016, 12:26 PM
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Thanks for all the replies! What I've decided to do is wait for my lift kit to arrive (couple days away!!!) then once I get it, I'll look at either a Tom Wood 1310 Drive Shaft or a y-pipe replacement!
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Old 09-19-2016, 01:12 PM   #23
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I just installed an AFE Y pipe my jeep. I didn't need it yet. I figured while I was installing my skid plates, I should upgrade my transmission cross member, and while doing all that work and going through the trouble I might as well do the y pipe. I only have a spacer lift in now so as I said earlier I don't need it yet. I chose the y pipe over the spacers due to as others have said it extends the exhaust lower underneath.
Also as an FYI when getting ready to due the spacers/y pipe make sure you soak the factory bolts on the flanges. Mine is a 2014 with 16,000 miles. And the oem bolts were so rusted and frozen. 3 of them broke and I soaked them for 3 days.
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Old 09-19-2016, 01:31 PM
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3 of them broke
Ya as a guy that helped with a couple friends Jeeps (Cherokee and Grand Ch.) exhausts I can attest that they get all kinds of messed up through all the temp changes. That's why I'm trying to get this handled before I reach 6,000.

Only thing worse than exhaust work is diff work. Which I'm helping my bud with this weekend as he's upgrading his Cherokee axle. which is great but a big pain in my Butt
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Old 09-19-2016, 08:48 PM   #25
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Heres a link to my post about my install of the AFE Y pipe with pics of it and the broken studs.
https://www.wranglerforum.com/f202/af...l-1837826.html
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Old 09-20-2016, 11:12 PM   #26
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I could be wrong, but I was under the impression that you didn't have to worry about driveshaft problems til you got more than 3.5" of lift?
Not to hyjack the thread, but TFs vid is what made me use them. The pieces are solid! Not just muffler pipe. At 1:30 you will see that at 2" the boot just starts to hit. With the spacer in, it takes it 5".

http://www.youtube.com/watch?v=s2CQD68LHSg
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Old 07-28-2017, 10:41 PM   #27
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Just installed some exhaust spacers in a 2015 2dr and i had to wind up cutting about an inch off the wye pipe. Did anyone else have to do this? And the stock front drive shaft still makes contact at full droop, I have a metal cloak 2.5 game changer.
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Old 07-28-2017, 11:32 PM   #28
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I did, too. By full droop, do you mean on a lift? If so, that's normal, too, but not seen in natural conditions. Don't jump yer junk! :-)

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Old 07-29-2017, 03:53 PM   #29
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I did, too. By full droop, do you mean on a lift? If so, that's normal, too, but not seen in natural conditions. Don't jump yer junk! :-)

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Ahh ok so it should be fine. Thanks Mark

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