Question about exhaust and tummy tuck

LONGJP2

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I've modified my exhaust a few times over the years, including for the recent tummy tuck.
I'm now going to replace the front pipe.
Won't the front pipe and cat stay mounted like stock?
If the skid raises the angle of the transmission, and the transmission tilts the engine, then won't the exhaust stay at the same angle as the transmission exhaust mount.
I realize the cat and muffler will be pointing up at a higher angle, but it seems the only interference is the tailpipe pushed up against the floor.
 
I've modified my exhaust a few times over the years, including for the recent tummy tuck.
I'm now going to replace the front pipe.
Won't the front pipe and cat stay mounted like stock?
If the skid raises the angle of the transmission, and the transmission tilts the engine, then won't the exhaust stay at the same angle as the transmission exhaust mount.
I realize the cat and muffler will be pointing up at a higher angle, but it seems the only interference is the tailpipe pushed up against the floor.

I think it all depends on how you modified it.
Both times I did tucks, I simply cut and shortened the trans mount bracket.
 
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I've seen that as a solution, but I don't get it.
How can you force it to hang lower if the angle is dependent on being mounted to the engine.
 
Or this?

51JRWY8AO+L._AC_SL1500_.jpg
 
I've seen that as a solution, but I don't get it.
How can you force it to hang lower if the angle is dependent on being mounted to the engine.

I had mine all mocked up and could see where the hanger need to be. I then removed it, cut the weld and lowered it to where it needed to be.
I then rewelded the bracket and assembled.

1655426800665.png
 
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I've seen that as a solution, but I don't get it.
How can you force it to hang lower if the angle is dependent on being mounted to the engine.

When you raise the engine you raise the rest of the exhaust,I took out my 3rd cat at this time(not monitored anyway)I just cut both ends of the cat off and welded them to a straight pipe and heated the transmission bar hanger on the end of the pipe until it went up.I also had to shorten both my rear pipe brackets,can you weld?
 
I'm not asking how to fix mine.
I'm pointing out that the engine, transmission, and the exhaust that is mounted to the engine and transmission all move together.
Unless you've cut the front pipe, how can you lower the exhaust trans.mount without putting stress on the manifold mount?
 
I had mine all mocked up and could see where the hanger need to be. I then removed it, cut the weld and lowered it to where it needed to be.
I then rewelded the bracket and assembled.

The angle from the engine wouldn't have changed except for the weight of the unsupported exhaust pulling it down.
 
except for the weight of the unsupported exhaust pulling it down

kinda what you're doing..... let it hang and then hold it there. if it's not enough then maybe a drop down is in order b4 the cat after the turn around the oil pan. then re-secure.

i'd cut the sys right after the bend, get the trans mount unhooked, and do the tuck. then see whats gotta be to make the reconnection.
 
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The angle from the engine wouldn't have changed except for the weight of the unsupported exhaust pulling it down.

When you install the tummy tuck, you are pushing the trans up closer to the tub. Now with the exhaust hanger seated into the bracket on the side of the trans bracket, you are pushing the exhaust up higher. Look at exhaust after the rear cat and you will see it angled up. By shortening the mount you are allowing the exhaust to come back down into its normal position. I had to do it on both my TJ and LJ. The TJ wasn't as bad because I did have lifted motor mounts. If you don't correct it, it puts stress on the hanger that is back by the 3rd cat. The hanger will tear off and leave a gaping hole in the pipe. Ask me how I know.
I hope I explained that right.
 
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When you install the tummy tuck, you are pushing the trans up closer to the tub. Now with the exhaust hanger seated into the bracket on the side of the trans bracket, you are pushing the exhaust up higher. Look at exhaust after the rear cat and you will see it angled up. By shortening the mount you are allowing the exhaust to come back down into its normal position. I had to do it on both my TJ and LJ. The TJ wasn't as bad because I did have lifted motor mounts. If you don't correct it, it puts stress on the hanger that is back by the 3rd cat. The hanger will tear off and leave a gaping hole in the pipe. Ask me how I know.
I hope I explained that right.

I disagree.
Its normal position IS angled up, because that is the new angle of the engine and transmission.
The only reason it comes down is gravity.
The reason it tears a hole in the pipe is probably because the other end can't go any higher due to the next hanger under the tub pushing down.
Ask me how I know.
 
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I disagree.
Its normal position IS angled up, because that is the new angle of the engine and transmission.
The only reason it comes down is gravity.
The reason it tears a hole in the pipe is probably because the other end can't go any higher due to the next hanger under the tub pushing down.
Ask me how I know.

You can disagree all you want. I’m telling you from my experience. I tucked mine and it put the exhaust right up into the floor.
And that was with a 1.25” bl
 
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I completely redid my exhaust from the header back. Moving it in closer to the engine up front to clear the upper four link bracket and arm on the passenger side up front. Then moved the single Cat since it’s a 99’ back a bit relocated the mount in your pictures, added two fancy disconnects so I can remove the exhaust in sections if needed. I’ll have to take some pictures of it tomorrow