Used exhaust wont go back together

Wally1552 · 04-21-2019, 05:42 PM

Hi guys
So I picked up a used e90 corsa exhaust. It's in very good condition from what I can tell. However the axel pipe and muffler inlet wont slip on. It seems if I could just stretch the muffler inlet by 1-2mm, it will accept the axel pipe. Has anyone tried an exhaust tube expander or any other ideas to get them back together? Should I try taking it to a midas/meineke to get them to expand it?

roastbeef · 04-21-2019, 05:52 PM

Make sure they are really clean use some wd40 on a rag or nevrdull. Try leaving the female side in the sun and put the male end on ice.

Powashiftin · 04-21-2019, 07:04 PM

Quote:

Originally Posted by roastbeef

Make sure they are really clean use some wd40 on a rag or nevrdull. Try leaving the female side in the sun and put the male end on ice.

This. I had difficulty installing mine as well. It's difficult without a lift and a second set of hands. With that said, if I can do it, you can it. Keep at it.

Wally1552 · 04-21-2019, 07:26 PM

Hmm ok I'll try this. I didn't think heat and cold would make much difference in expanding/shrinking the steel but worth a shot! Thanks.

Bartledoo · 04-22-2019, 01:18 AM

I also had a little trouble with a used corsa. Some lube and hard pushing while twisting got it in. It also helped to have one part mounted and press the other into it. Adjusting the position of the tips while keeping the pipes inserted deep enough to prevent leakage was also annoying.

roastbeef · 04-22-2019, 02:07 AM

So just lube it up and force it in deep.

Bartledoo · 04-22-2019, 11:16 AM

Quote:

Originally Posted by roastbeef

So just lube it up and force it in deep.

Don't forget that twist action

///M Power-Belgium · 04-22-2019, 11:34 AM

Quote:

Originally Posted by roastbeef

So just lube it up and force it in deep.

.

M43S7RO · 04-22-2019, 03:19 PM

You need an expander to open up the ends again. Cheap at harbor freight, autozone also loans them.

randrews15 · 04-22-2019, 04:23 PM

My Akra Evo pipe was like that when I tried to mate it with my Akra angle back. Some WD40 like roast beef said and a rubber mallet got them together beautifully. Remember to push from the hips and go deep!!

Wally1552 · 04-22-2019, 05:59 PM

Quote:

Originally Posted by M43S7RO

You need an expander to open up the ends again. Cheap at harbor freight, autozone also loans them.

Probably going this route. Do I need to hest them up with a torch?

M43S7RO · 04-22-2019, 07:14 PM

No torch, the expander opens them enough to make it easy to put back together. I ran into your issue after I took my Corsa apart once.

DanMpower · 04-23-2019, 12:18 AM

this thread.

04-21-2019, 05:42 PM	#1
Wally1552 First Lieutenant 122 Rep 334 Posts Drives: 135i Join Date: Jun 2009 Location: HI iTrader: (0)	Used exhaust wont go back together Hi guys So I picked up a used e90 corsa exhaust. It's in very good condition from what I can tell. However the axel pipe and muffler inlet wont slip on. It seems if I could just stretch the muffler inlet by 1-2mm, it will accept the axel pipe. Has anyone tried an exhaust tube expander or any other ideas to get them back together? Should I try taking it to a midas/meineke to get them to expand it?
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04-21-2019, 05:52 PM	#2
roastbeef Lieutenant General 11583 Rep 12,723 Posts Drives: E92 M3 Join Date: Nov 2010 Location: Orange County, CA iTrader: (4)	Make sure they are really clean use some wd40 on a rag or nevrdull. Try leaving the female side in the sun and put the male end on ice. __________________ Instagram; @roastbeefmike
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04-21-2019, 07:26 PM	#4
Wally1552 First Lieutenant 122 Rep 334 Posts Drives: 135i Join Date: Jun 2009 Location: HI iTrader: (0)	Hmm ok I'll try this. I didn't think heat and cold would make much difference in expanding/shrinking the steel but worth a shot! Thanks.
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04-22-2019, 01:18 AM	#5
Bartledoo Driver 2692 Rep 2,714 Posts Drives: 2011 E90 M3 6MT Join Date: Aug 2015 Location: Seattle, WA iTrader: (0) Garage List 2023 Corvette Stingray [0.00] 2002 Porsche Boxster [0.00] 2011 E90 M3 [0.00] 2021 Tesla Model Y [0.00]	I also had a little trouble with a used corsa. Some lube and hard pushing while twisting got it in. It also helped to have one part mounted and press the other into it. Adjusting the position of the tips while keeping the pipes inserted deep enough to prevent leakage was also annoying.
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04-22-2019, 02:07 AM	#6
roastbeef Lieutenant General 11583 Rep 12,723 Posts Drives: E92 M3 Join Date: Nov 2010 Location: Orange County, CA iTrader: (4)	So just lube it up and force it in deep. __________________ Instagram; @roastbeefmike
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04-22-2019, 03:19 PM	#9
M43S7RO Major 502 Rep 1,055 Posts Drives: Jerez Black E92 M3 Join Date: Sep 2015 Location: Peoria, AZ iTrader: (13)	You need an expander to open up the ends again. Cheap at harbor freight, autozone also loans them.
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04-22-2019, 04:23 PM	#10
randrews15 Lieutenant 284 Rep 552 Posts Drives: 2012 E93 M3 Le Mans Blue Join Date: Nov 2012 Location: Parrish, FL iTrader: (1)	My Akra Evo pipe was like that when I tried to mate it with my Akra angle back. Some WD40 like roast beef said and a rubber mallet got them together beautifully. Remember to push from the hips and go deep!!
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04-22-2019, 07:14 PM	#12
M43S7RO Major 502 Rep 1,055 Posts Drives: Jerez Black E92 M3 Join Date: Sep 2015 Location: Peoria, AZ iTrader: (13)	No torch, the expander opens them enough to make it easy to put back together. I ran into your issue after I took my Corsa apart once.
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04-23-2019, 12:18 AM	#13
DanMpower Colonel 3231 Rep 2,159 Posts Drives: BMW M3s and a Red VW Join Date: Feb 2018 Location: Southern CA iTrader: (28)	this thread.
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