C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

muffler removal

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Old Apr 25, 2007 | 10:03 AM
  #1  
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Default muffler removal

Trying to remove my mufflers, so i dont have to let some greasy shop mechanic near my car !

They are on there.

I removed the c clamp, hit it with a hammer, used a flat head screw driver and a hammer, tried the clamp further down and wacked that, heated it up with a propane torch..

She is stuck

85c4 44k

Dan
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Old Apr 25, 2007 | 10:04 AM
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ps i want to take them off in 1 piece so if i sell the car I can put it back to stock if needed.
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Old Apr 25, 2007 | 07:32 PM
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Default Cut them off

I too tried to get my stock mufflers off in one piece. It wasn't going to happen. I used a sawsall to get them off. A buyer would most likely be more attracted to a more "rugged" sound. Good Luck
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Old Apr 25, 2007 | 08:04 PM
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Can you get ahold of a 4-1/2" grinder? If so then get a couple of cut off wheels (thin ones are about .40") and use this to cut several slots in the pipe (length wise on the pipe) about 1/2" beyond where the clamps were. Then try your hammer and screw driver ( ) to get them off. You can then weld up the slots you cut and grind them down even with the pipe. When you clamp the pipe together with the "U" clamps they often crimp the pipes. Best of luck on your project.
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Old Apr 25, 2007 | 08:55 PM
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Sounds good, i guess ill have to try that, or just cut it where its straight, use a pipe to connect them if needed
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Old Apr 25, 2007 | 09:15 PM
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Default stock mufflers

I have a set of mufflers removed from a 85 in 1986 or 87 if you ruin yours.
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Old Apr 25, 2007 | 09:58 PM
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If they have been on there too long, they may be frozen on.

However, I have removed mufflers by putting a screwdriver on the lip and lightly tapped it in trying to seperate or expand the pipes. If you can expand it about half way around, try spraying penentrating oil, likr PB Blaster in there andtwist the muffler.

It is worth a try, but again if they are frozen they may not come off.
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Old Apr 25, 2007 | 10:17 PM
  #8  
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PBBlaster and put some heat to the bolts/nuts, let PB soak 24 hrs, mine came right off
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Old Apr 26, 2007 | 07:52 AM
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i bought something similar to this, but mine is adjustable from 2" to 2.5" - bought it at carlisle several years ago for around $20 - mine works great...

http://www.eastwoodco.com/jump.jsp?i...emType=PRODUCT

note: this one is fixed at 2.25 inches

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Old Apr 27, 2007 | 11:53 AM
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Still not off
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Old Apr 27, 2007 | 12:22 PM
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Originally Posted by John A. Marker
Can you get ahold of a 4-1/2" grinder? If so then get a couple of cut off wheels (thin ones are about .40") and use this to cut several slots in the pipe (length wise on the pipe) about 1/2" beyond where the clamps were. Then try your hammer and screw driver ( ) to get them off. You can then weld up the slots you cut and grind them down even with the pipe. When you clamp the pipe together with the "U" clamps they often crimp the pipes. Best of luck on your project.
only i used my roto zip with a small cut off wheel.
good luck
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Old Apr 27, 2007 | 01:11 PM
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If you are not trying to save the mufflers, cut them off. If you can't drive the short pieces off the Y-pipe you are gonna have to go see that greasy mechanic!
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Old Apr 27, 2007 | 09:48 PM
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Default

Originally Posted by corvettedan22
Trying to remove my mufflers, so i dont have to let some greasy shop mechanic near my car !

They are on there.

I removed the c clamp, hit it with a hammer, used a flat head screw driver and a hammer, tried the clamp further down and wacked that, heated it up with a propane torch..

She is stuck

85c4 44k

Dan

I could be wrong but I think the exhaust system is all One piece...
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Old Apr 27, 2007 | 09:51 PM
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The 85 is two sections, a rear "Y" that bolts to cat and then mufflers that clamp or can be welded to the "Y".
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Old Apr 27, 2007 | 10:26 PM
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You need an oxy/acetylene torch. It requires a lot of heat so when you try to swivel and wiggle it back and forth it loosens the muffler clamp crimp.
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Old Apr 27, 2007 | 11:12 PM
  #16  
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Take a Sawzaw, cut it off and be done with it.
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Old Apr 28, 2007 | 06:19 PM
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Ok got one off

Grinded two lines, air chizeled the sides of the muffler spread open, worked it for 45 min, finaly got 1 off.

THAT THING IS HEAVY, and now chewed up !!

For the next side im going to try a smaller line (Thiner) so i can weld it back together easyier.




What angle is that muffler pipe
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Old Apr 28, 2007 | 07:27 PM
  #18  
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I admire your tenacity. I would have cut that b*tch off long ago!
Mike
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Old Apr 28, 2007 | 09:14 PM
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Originally Posted by corvettedan22
ps i want to take them off in 1 piece so if i sell the car I can put it back to stock if needed.
Mufflers are like spark plugs, they're a replacement item. If that's all that ends up coming between you and a potential buyer, purchase a new set of OEM mufflers. But as was said earlier, most buyers would be more attracted to a better grade of muffler.
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