EMS Exhaust clearance over diff

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

xirforever said:
I will snap a few photos of the same measurement with my suspension in the High mode for comparison. Honestly though my exhaust placement looks identical to yours when you consider you have a lift. It looks like I have a little over an inch of clearance and you have a little under 2" of clearance with a lift. With my suspension being much softer than yours, it will probably compress more when going over speed bumps, intersections that dip down a lot, and anywhere other scenario where the entire rear end will compress at once. I have just confirmed with EMS that I have no sag (not sure the significance of sag in this situation) and I am waiting to hear what else they would like me to inspect or do. They have been very responsive so I'm expecting more direction sometime today.
Click to expand...

Well here goes the slippery slope

Honey I need to lift to work the clearance on the exhaust

I also need front and rear bumpers to help offset the weight :) so I can get the larger springs

Seriously, maybe stock toyota springs would take care of this as well. Probably a few who dont need them putting lifts on
 
Guys,
I don't think suspension should come into play much at all here, a lift just changes the neutral ride height, when fully compressed we're all in the same boat unless the bump stops are changed.
Has anyone with the EMS cat-back cycled the rear suspension fully with it installed to see what the clearance is with the rear fully stuffed and with each side stuffed while the other is drooped?

A study like that should clear this all up.

Similar to the situation where 35's don't rub at the mall but rub on a trail that twists up the suspension unless all the mods have been done right.
 
AimCOtaco said:
Guys,
I don't think suspension should come into play much at all here, a lift just changes the neutral ride height, when fully compressed we're all in the same boat unless the bump stops are changed.
Has anyone with the EMS cat-back cycled the rear suspension fully with it installed to see what the clearance is with the rear fully stuffed and with each side stuffed while the other is drooped?

A study like that should clear this all up.

Similar to the situation where 35's don't rub at the mall but rub on a trail that twists up the suspension unless all the mods have been done right.
Click to expand...


Agreed. Here are some photos of a little bit of flex. I ran over some wood that totaled 9" in height on one side only. I did each side.

Pictures go as follows:

1. Wood Picture
2. Drivers Side Lifted (9")
3. Passenger Side Lifted (9")
4. AHC in High Mode (Raised 2")
5. AHC in Low Mode (Lowered 1.75")


EDIT: If the pipe didn't jog so far over towards the diff flange, clearance would be fantastic. It appears that the diff has plenty of room left but its the diff input flange that is suffering on space.

IMG_1413.webp


Drivers Side Lifted.webp


Passenger Side Lifted.webp


High Mode.webp


IMG_1420.webp
 
Last edited:
I'm not seeing where it is hitting. Is there coating material on the diff? Are there groves in the pipe? Hard to tell from the pictures. Could there have been a notch on the pipe and the coating flacked off?
 
Romer said:
I'm not seeing where it is hitting. Is there coating material on the diff? Are there groves in the pipe? Hard to tell from the pictures. Could there have been a notch on the pipe and the coating flacked off?
Click to expand...

This picture should help, the exhaust came without a mark on it, just pure black when I received it. The notch is pretty deep and rough and my flange has rubbing marks on it.

IMG_2744.webp
 
Last edited:
yup, those grooves are pretty clear along with the material on the diff flange

With the clearance you showed in the other pics, wondering what moved to make the hit. Does the pipe move at all when you push on it? Bailing wire has been used many times to fix an exhaust. You could tie it harder to the frame so it wouldn't move until EMS gets back to you
 
Generally under load or acceleration the exhaust does shift/flex under pressure. I bet a combination of load, bumps, and suspension cycle it makes contact. I have never checked my DT, but I will tomorrow.
 
2000UZJ said:
Generally under load or acceleration the exhaust does shift/flex under pressure. I bet a combination of load, bumps, and suspension cycle it makes contact. I have never checked my DT, but I will tomorrow.
Click to expand...

I think I might do the same. This is kinda crazy though, wonder why clearance wasn't tested extensively...
 
FlammableFishie said:
I think I might do the same. This is kinda crazy though, wonder why clearance wasn't tested extensively...
Click to expand...

I am betting they scanned the OEM pipes and replicated. With clamp style joints, they probably didn't account for the possibility of the sections rotating or installed mis-aligned during assembly. It seems like the EMS has more clearance issues than the DT, however I haven't seen a EMS yet, so I can't comment. The DT is very robust, 3 sections. Not sure how many sections the EMS had.
 
2000UZJ said:
I am betting they scanned the OEM pipes and replicated. With clamp style joints, they probably didn't account for the possibility of the sections rotating or installed mis-aligned during assembly. It seems like the EMS has more clearance issues than the DT, however I haven't seen a EMS yet, so I can't comment. The DT is very robust, 3 sections. Not sure how many sections the EMS had.
Click to expand...

I think EMS just has 4 sections. I don't think the sections would affect anything though because it's split between the muffler and cats, that's what made the 4th section.
 
xirforever said:
Agreed. Here are some photos of a little bit of flex. I ran over some wood that totaled 9" in height on one side only. I did each side.

Pictures go as follows:

1. Wood Picture
2. Drivers Side Lifted (9")
3. Passenger Side Lifted (9")
4. AHC in High Mode (Raised 2")
5. AHC in Low Mode (Lowered 1.75")


EDIT: If the pipe didn't jog so far over towards the diff flange, clearance would be fantastic. It appears that the diff has plenty of room left but its the diff input flange that is suffering on space.
Click to expand...


That 5th pic shows it real tight with AHC in Low, is that sitting neutral or on the blocks? If it's neutral it looks like it wouldn't take much defection to cause interference.

I might try to loosen all the clamps but leave it hanging in place and see if you can improve the clearance with some adjustment.
 
Romer said:
yup, those grooves are pretty clear along with the material on the diff flange

With the clearance you showed in the other pics, wondering what moved to make the hit. Does the pipe move at all when you push on it? Bailing wire has been used many times to fix an exhaust. You could tie it harder to the frame so it wouldn't move until EMS gets back to you
Click to expand...

It may move a little, but honestly it is securely mounted right now. Ill just make sure to go over certain things slowly (probably the easiest temp. solution)

AimCOtaco said:
That 5th pic shows it real tight with AHC in Low, is that sitting neutral or on the blocks? If it's neutral it looks like it wouldn't take much defection to cause interference.

I might try to loosen all the clamps but leave it hanging in place and see if you can improve the clearance with some adjustment.
Click to expand...


The 5th pic is AHC in Low, sitting neutral without blocks. That is a total compression of 1.75" from the Neutral mode. So if you a driving and hit a speed bump or a dip in an intersection and compress your rear end 1.75", that is how close it will be to the diff flange. In reality it may be closer as when you drive over something, your exhaust will resist the rapid movement upward (because it has mass and takes time to accelerate) so it might sit lower toward the flange and hit it. 1.75" of travel (total compression) is not a whole lot I'm thinking, right? It will definitely hit your exhaust before the bump stops are engaged.

The thing about it is that it looks like that section of the exhaust could avoid the flange with some different bends. Now I haven't tried to fab up my own exhaust on this vehicle so there could be other complications, I'm just saying it looks like this could be avoided from the brief research I have been doing. Right now I am sure EMS is busy with daily business, I will let ya'll know when they respond back to the suspension measurements they requested.
 
Please forgive my terrible Paint skills haha. I could draw it up in a 3D model but nobody wants to see that lol. This is what I'm referring to in my last post about having a different angle and clearance might be gained.

IMG_1420.webp
 
xirforever, we've looked over all the photos you sent over and we can't see a problem with your ride height or with the exhaust system. Just incase it's an issue with the tailpipe orientation we are getting a new one prepped to ship your way. Let me know if you have any questions.
 
baktasht said:
xirforever, we've looked over all the photos you sent over and we can't see a problem with your ride height or with the exhaust system. Just incase it's an issue with the tailpipe orientation we are getting a new one prepped to ship your way. Let me know if you have any questions.
Click to expand...

^Nice. That's pretty high quality customer service. Sending something as a "just in case" to ensure a happy consumer goes a long way. Well done.
 
You must log in or register to reply here.

Share this page

Back
Top Bottom