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Old 04-16-2013, 06:17 PM   #1
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Exhaust Extensions on a 2.5" shock/coil lift??

...The kit didn't recommend them? I know it gives more space for downward suspension travel, but I'm not off-roading, so what's the deal?

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Old 04-16-2013, 06:31 PM   #2
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Anybody with smaller lifts like mine without these extensions having issues? Is it safe for you to simply have your Jeep put on a lift for service, or does the driveshaft hit the exhaust pipe?

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Old 04-16-2013, 08:16 PM   #3
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Bump...
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Old 04-16-2013, 08:42 PM   #4
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I (the shop) put the extension on with the AEV 2.5 lift. AEV said it was not really necessary but wanted them just in case I hit max suspension travel and figured it was cheap insurance. They are on AEV's website and are just a simple to install extension.
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Old 04-16-2013, 09:01 PM   #5
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I (the shop) put the extension on with the AEV 2.5 lift. AEV said it was not really necessary but wanted them just in case I hit max suspension travel and figured it was cheap insurance. They are on AEV's website and are just a simple to install extension.
True..no leaks? Plus, i won't fully articulate, but i worry about going up on hoists... Does it actually hit just being on a hoist?
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Old 04-16-2013, 09:28 PM   #6
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I have 2.5 TF coils and 1" spacers and have no DS issues yet. I wheel almost every weekend with lots of articulation areas. 6000 or so miles.
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Old 04-16-2013, 09:56 PM   #7
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I have 2.5 TF coils and 1" spacers and have no DS issues yet. I wheel almost every weekend with lots of articulation areas. 6000 or so miles.
So no exhaust spacers, you're saying?
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Old 04-16-2013, 10:34 PM   #8
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We have done a 2012 2 door Rubicon with a 2,5" Teraflex lift and a 2013 4 door Rubicon with the same lift and at full flex, there is still 3/4" space between the drive shaft and the exhaust. The 2 door was done 8000 miles ago and still going strong and the 4 door was done 2000 miles ago, no problems.

BTW, no exhaust spacers was added to either Jeeps.
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Old 04-16-2013, 10:49 PM   #9
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We have done a 2012 2 door Rubicon with a 2,5" Teraflex lift and a 2013 4 door Rubicon with the same lift and at full flex, there is still 3/4" space between the drive shaft and the exhaust. The 2 door was done 8000 miles ago and still going strong and the 4 door was done 2000 miles ago, no problems.

BTW, no exhaust spacers was added to either Jeeps.
Nice! I appreciate the feedback. I reasoned that if it were so important, it would come in the GD kit!
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Old 04-16-2013, 11:09 PM   #10
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It all depends on your shock length too. If you run a shock for a 3" lift, you should be good. If you go for a shock up to 4", then the down travel might be to long and you can run into trouble.

Just keep that in mind.
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Old 04-16-2013, 11:27 PM   #11
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It all depends on your shock length too. If you run a shock for a 3" lift, you should be good. If you go for a shock up to 4", then the down travel might be to long and you can run into trouble.

Just keep that in mind.
I see what you mean and have read that before... Now, my question is, why would someone run a shock that doesn't correspond with their lift?
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Old 04-17-2013, 12:15 AM   #12
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You didn't specify which lift you are looking at. Many of the "2.5 inch" lifts give much more lift if your vehicle isn't heavily loaded down with steel bumpers, winch, etc.

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Old 04-17-2013, 12:57 AM   #13
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I don't have many mods like those... it's a 2.5 lift
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Old 04-17-2013, 02:58 AM   #14
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I see what you mean and have read that before... Now, my question is, why would someone run a shock that doesn't correspond with their lift?
To get more downtravel. Metal Cloak uses long travel OME shocks in their ARB edition kits, and I think their in house 6 pack shocks are also fairly long travel. I have one of the MC 2.5" lifts and the shocks are about 27" fully extended. Definitely had to run the exhaust spacer for that. Here's a pic of what you get when you do that.

edit: Oh a reason the kit may not have specified it is if it is listed as for a 2007-12/13 and not just 2012 and up. The 2011 and earlier don't need the spacers. I suppose they could note that 2012+ need them but that would make it too easy I guess.

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Old 04-17-2013, 09:18 AM   #15
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I don't have many mods like those... it's a 2.5 lift
Which manufacturer, and which shocks?

The Metalcloak 2.5 kit does need the exhaust spacer as it maximizes down travel.

So again, which kit are you looking at?
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Old 04-17-2013, 10:17 AM   #16
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Old 04-17-2013, 10:19 AM   #17
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One other thing to keep in mind when running exhaust spacers is if you have skid plates, the cross over pipe sometimes will rub against the skid plate and vibrate. You can space the skid plate out with washers to clear it or you can skip the spacer for the crossover pipe.
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Old 04-17-2013, 12:12 PM   #18
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Which manufacturer, and which shocks?

The Metalcloak 2.5 kit does need the exhaust spacer as it maximizes down travel.

So again, which kit are you looking at?
Sorry, I have the Rough Country 2.5" shock/coil lift installed, and I love it. Yet, I just read that these exhaust extensions are suggested for lifts above 2"... Well, why wouldn't the pricks include it in the kit then?? Shit pisses me off... I may not fully articulate, but I don't want the f'ing driveshaft to be resting on the exhaust crossover every time I put it on a lift for service, either...
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Old 04-17-2013, 12:37 PM   #19
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Sorry, I have the Rough Country 2.5" shock/coil lift installed, and I love it. Yet, I just read that these exhaust extensions are suggested for lifts above 2"... Well, why wouldn't the pricks include it in the kit then?? Shit pisses me off... I may not fully articulate, but I don't want the f'ing driveshaft to be resting on the exhaust crossover every time I put it on a lift for service, either...
it's really easy to check...so check it yourself.

install the lift & shocks, and drop the axle to full droop. you should be doing this anyway to check brake line lengths...so just look over and check the exhaust vs driveshaft clearances at the same thing.
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Old 04-17-2013, 01:21 PM   #20
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^^^^^^^

Exactly, if the lifts already installed then grab a floor jack, a couple of jack stands and jack the front of your Jeep up. Now crawl under there and see how much room you have between the driveshaft and your exhaust.

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Old 04-17-2013, 02:53 PM   #21
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^^^^^^^

Exactly, if the lifts already installed then grab a floor jack, a couple of jack stands and jack the front of your Jeep up. Now crawl under there and see how much room you have between the driveshaft and your exhaust.

Mike
How? I have tried doing that with a 3.5 ton floor jack that has a lift height of 21" and I still can't get it to fully drop on the other side.
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Old 04-17-2013, 03:00 PM   #22
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How? I have tried doing that with a 3.5 ton floor jack that has a lift height of 21" and I still can't get it to fully drop on the other side.
Lift jeep up as high as possible, possibly using a wood block as a jack spacer. Support from the frame with tall 6 ton or larger jack stands. Pull tires off and allow axle to fully drop. Stand on the passenger side if you have to. I've done this on multiple jeeps, including a JK...with a smaller jack.....so its doable

Also keep in mind loosening the control and track bar bolts will make your life easier and save your bushings.
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Old 04-17-2013, 03:18 PM   #23
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Lift jeep up as high as possible, possibly using a wood block as a jack spacer. Support from the frame with tall 6 ton or larger jack stands. Pull tires off and allow axle to fully drop. Stand on the passenger side if you have to. I've done this on multiple jeeps, including a JK...with a smaller jack.....so its doable

Also keep in mind loosening the control and track bar bolts will make your life easier and save your bushings.
You guys are all a big help, but this is ridiculous... If this particular lift kit is such that the driveshaft is touching the pipe, then these assholes should be including the extensions in the kit! I mean, wtf???
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Old 04-17-2013, 03:55 PM   #24
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Deleted duplicate post.
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Old 04-17-2013, 04:58 PM   #25
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You guys are all a big help, but this is ridiculous... If this particular lift kit is such that the driveshaft is touching the pipe, then these assholes should be including the extensions in the kit! I mean, wtf???
You haven't been around very long if you think aftermarket manufacturers do the due diligence required to ensure their products fit, are complete or work for every application possible....or that they even have the ability. That's why you need to educate yourself, and figure it out for yourself, on your individual rig.
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Old 04-17-2013, 05:03 PM   #26
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Your front drive shaft will not last very long with a lift of 2,5" or taller. Most people install an aftermarket driveshaft at the same time they lift the Jeep. That will give you the desire clearance to the exhaust pipe. Then you don't need the spacers. Spacers are a pain anyway with aftermarket skid plates. That is the reason why these manufacturers don't include the spacers. It is as simple as that. You have a choice how to fix the problem.
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Old 04-17-2013, 05:24 PM   #27
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Your front drive shaft will not last very long with a lift of 2,5" or taller. Most people install an aftermarket driveshaft at the same time they lift the Jeep. That will give you the desire clearance to the exhaust pipe. Then you don't need the spacers. Spacers are a pain anyway with aftermarket skid plates. That is the reason why these manufacturers don't include the spacers. It is as simple as that. You have a choice how to fix the problem.
I'm told by a couple mechanics that the stock ds will be just fine for a 2.5 lift with limited to no off-road use... I'd rather get my use out of it first.
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Old 05-10-2013, 09:53 AM   #28
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I've watched the install video on teraflex and it SEEMS pretty simple.

I'll be doing this in the garage on jack stands.

Anything I need to know before attempting this myself? Kit will hopefully arrive next week.
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Old 05-10-2013, 10:06 AM   #29
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it's really easy to check...so check it yourself.

install the lift & shocks, and drop the axle to full droop. you should be doing this anyway to check brake line lengths...so just look over and check the exhaust vs driveshaft clearances at the same thing.

Yeah, this. I have no firsthand knowledge of the particualr lift you're running. Just look at it. Every 2.5" kit is slightly different. AEV uses all 4 progressive springs, so tends to stay right about advertised lift height, RK is notorious for getting 3-4" or so from their 2.5", Metalcloak is designed particulary for gobs of travel, etc.

Jack it up and pull the tires. Either it hits or it doesnt. If it looks really close, then maybe get an extension.

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