1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

I'm trying to take off my old exhaust...

Thread Tools
 
Search this Thread
 
Old 09-21-05, 04:09 PM
  #1  
On the prowl for an FB

Thread Starter
iTrader: (1)
 
$100T2's Avatar
 
Join Date: Sep 2002
Location: Surrounded by Sebey parts, Rhode Island
Posts: 2,932
Likes: 0
Received 6 Likes on 4 Posts
I'm trying to take off my old exhaust...

And it's rusted like a ************. I broke one of my rachets on it, so I used that as an excuse to go buy an all new Craftsman tool set at Sears. Now, the rachet doesn't break, instead, it's ripping the brackets right off the exhaust. I already tried spraying WD-40 into the bolts... Nothin'.

I don't have a torch. It's not a matter of needing a breaker bar. I'm either going to just cut the old exhaust off with a hacksaw, or ???

Any ideas?
Old 09-21-05, 04:17 PM
  #2  
Full Member

 
snwyvern's Avatar
 
Join Date: Sep 2005
Location: Pueblo, Colorado
Posts: 186
Likes: 0
Received 0 Likes on 0 Posts
I've found that the best way to handle the rust is to soak it in WD-40 or some other rust penetrant. The stuff that unfixes Thread locker works well, i've found. In two situations I've done two things-- Working on a 300Z, a friend and I just torched it off and welded on new spec hanger brackets.


... That being said, it's usually easier to put a vice on the part that's being bent/crushed and attach it to stomething sturdy so that you can loosen/strip the bolts at will.

-Jason
Old 09-21-05, 04:22 PM
  #3  
Boss**"You scare customer"

 
9d7gst's Avatar
 
Join Date: Jul 2002
Location: Texas
Posts: 203
Likes: 0
Received 0 Likes on 0 Posts
If you have an Autozone around, they rent pipe cutters. $45.95 and you get it all back when you return it.
Old 09-21-05, 04:32 PM
  #4  
Full Member
Tenured Member 15 Years
iTrader: (1)
 
mR.dnA's Avatar
 
Join Date: Sep 2005
Location: Los Angeles
Posts: 106
Received 10 Likes on 8 Posts
Originally Posted by snwyvern
soak it in WD-40 or some other rust penetrant.
Letting it sit (and reapplying in the meantime) before wrenching is key and can absolutely make or break (no pun intended) the results.

Although I have to say it's friggin annoying to have to wait it out when you want to get some friggin' work done
Old 09-21-05, 04:51 PM
  #5  
Resurrecting Gus

iTrader: (4)
 
Glazedham42's Avatar
 
Join Date: Jul 2003
Location: Indiana
Posts: 2,790
Likes: 0
Received 6 Likes on 5 Posts
Are you talking about the exhaust studs in the engine, or the actual piping? If you are talking about the piping under the car, just cut that crap off. If it is old and rusty then it isn't worth keeping anyway. Save yourself the bloody knuckles and hack that stuff off....
Old 09-21-05, 04:55 PM
  #6  
Say hello to Mr.Wankel

iTrader: (7)
 
dbragg's Avatar
 
Join Date: Nov 2004
Location: Cartersville, Ga
Posts: 5,962
Likes: 0
Received 1 Like on 1 Post
i have the same problem trying to remove my stock SE muffler from the rest of the exhaust. ive spent lots of time and spilled lots of blood from my knuckles an di cant get the damn things to budge or break!
Old 09-21-05, 04:57 PM
  #7  
Full Member
Tenured Member 15 Years
iTrader: (1)
 
mR.dnA's Avatar
 
Join Date: Sep 2005
Location: Los Angeles
Posts: 106
Received 10 Likes on 8 Posts
Busted knucles = battle scars!


Old 09-21-05, 05:08 PM
  #8  
On the prowl for an FB

Thread Starter
iTrader: (1)
 
$100T2's Avatar
 
Join Date: Sep 2002
Location: Surrounded by Sebey parts, Rhode Island
Posts: 2,932
Likes: 0
Received 6 Likes on 4 Posts
The only thing I'm worried about is needing the old hangers for my new exhaust.

I reapplied the WD-40, and have been working on installing my interior instead.
Old 09-21-05, 05:25 PM
  #9  
13brew

 
Modified85's Avatar
 
Join Date: Jun 2005
Location: Florida
Posts: 365
Likes: 0
Received 1 Like on 1 Post
.

Maybe try an impact wrench. This has helped me in other similar situations.
Old 09-21-05, 05:27 PM
  #10  
Full Member
Tenured Member 15 Years
iTrader: (1)
 
mR.dnA's Avatar
 
Join Date: Sep 2005
Location: Los Angeles
Posts: 106
Received 10 Likes on 8 Posts
Another thing is that you might want to wrench it just a bit in both directions while it sits - and even a bit now and then while you're pulling it apart. It helps works the stuff in even more once the bolt/nut starts moving.
Old 09-21-05, 05:27 PM
  #11  
406 SBC-85 rx7

 
farnoush's Avatar
 
Join Date: Aug 2005
Location: fairfax, VA
Posts: 125
Likes: 0
Received 0 Likes on 0 Posts
if the wd-40 doesnt the second time, go out and get som PB blaster, its the best **** ive ever used and you dont have to spray it on and wait for it to start working.
Old 09-21-05, 05:41 PM
  #12  
Rotary Enthusiast

 
rbf41182gt's Avatar
 
Join Date: Jun 2004
Location: Richmond, VA
Posts: 1,081
Likes: 0
Received 2 Likes on 1 Post
get a really long socket driver. My grandfather's got one like 20" long dubbed "the convincer" A couple quick hits with that and the bolts/ nuts are broke loose.
Old 09-21-05, 05:43 PM
  #13  
Senior Member

 
ChasRX's Avatar
 
Join Date: Mar 2004
Location: Coastal
Posts: 589
Received 3 Likes on 1 Post
PB Blaster is my first choice. Aerokroil works great too, if you can find it. After spraying, it may help to try tighten them just a notch; then back it off. I found that to work for me. Now, I swap my exhaust system completely out for a "stock" emissions system. I put anti-seize agent on most threads on all my exhaust fasteners, wheel studs and spark plugs.
Old 09-21-05, 05:49 PM
  #14  
Old Fart Young at Heart

iTrader: (6)
 
trochoid's Avatar
 
Join Date: Apr 2004
Location: St Joe MO
Posts: 15,145
Likes: 0
Received 7 Likes on 7 Posts
Throw that WD-40 out and get some P B Blaster, you will be amazed at the difference between the 2 products.

Spray and soak, come back a couple of hours later and do it again. Work the nuts and bolts in BOTH directions, when they start to break loose, you are usually good to continue removal.

A propane cylinder, from a camp stove, with a $10 torch head ($15 total investment), will give you enough heat, if the penetrant doesn't do it.
Old 09-21-05, 05:56 PM
  #15  
---

 
inuissus_cendi's Avatar
 
Join Date: Sep 2005
Location: Minneapolis, MN
Posts: 573
Likes: 0
Received 1 Like on 1 Post
I just had the exact same problem. I was tryin to put on a full Racing Beat system, and I couldnt wait to put all that shiny new metal on the car. After my first try I went to a guy who had some more tools and know-how than I, and we got it all off and the only thing destroyed were a few bolts. We used some stuff called Liquid Wrench (magical ****), a big breaker bar (and a big hammer to help with that), a vice grip, and a rotary sander/grinder for the hopeless cases. Oh, and a set of Navy-built muscles (him, not me).

Good luck,
Joe
Old 09-21-05, 06:55 PM
  #16  
Full Member

 
Ark1's Avatar
 
Join Date: Aug 2004
Location: Grimsby Ont. Canada
Posts: 167
Likes: 0
Received 0 Likes on 0 Posts
My old exhaust system was all rusted to hell so my dad just torched it. Much easier than fighting it. I relaize that not everyone has a torch, but when you're working on an old rusty car it sure is worth the investment.
Old 09-21-05, 06:58 PM
  #17  
On the prowl for an FB

Thread Starter
iTrader: (1)
 
$100T2's Avatar
 
Join Date: Sep 2002
Location: Surrounded by Sebey parts, Rhode Island
Posts: 2,932
Likes: 0
Received 6 Likes on 4 Posts
I bought the P B Blaster, it's on there right now. We'll see how it goes.
Old 09-21-05, 07:49 PM
  #18  
Fuuuuuuck Still Here

 
KCGSLSE's Avatar
 
Join Date: Mar 2005
Location: KCMO
Posts: 194
Likes: 0
Received 0 Likes on 0 Posts
All I have to say is PB Blaster and/or a Sawsall.
Old 09-21-05, 09:03 PM
  #19  
I'll Apex YOUR Seal

 
Mr BiG G's Avatar
 
Join Date: Jul 2003
Location: Mississauga, Ontario - Canada
Posts: 972
Likes: 0
Received 0 Likes on 0 Posts
propane torch - cheap, worthy good investment
Old 09-21-05, 09:52 PM
  #20  
On the prowl for an FB

Thread Starter
iTrader: (1)
 
$100T2's Avatar
 
Join Date: Sep 2002
Location: Surrounded by Sebey parts, Rhode Island
Posts: 2,932
Likes: 0
Received 6 Likes on 4 Posts
The only problem I have with a nice, cheap propane torch is, I just bought the car, and don't particularly trust it yet. Last thing I want to do is blow myself up by igniting leaky gasoline fumes.

The P B stuff hasn't worked, yet... I resprayed it, and will let it sit until tomorrow evening. Here's hoping.
Old 09-21-05, 10:33 PM
  #21  
Full Member

 
mjg80918's Avatar
 
Join Date: Jun 2005
Location: Chester
Posts: 53
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by $100T2
The only thing I'm worried about is needing the old hangers for my new exhaust.

I reapplied the WD-40, and have been working on installing my interior instead.

go to autozone and buy this stuff called BP. its an acid that removes rust ASAP. it says as seen on tv on it, but trust me it works charms.
Old 09-21-05, 10:34 PM
  #22  
Full Member

 
mjg80918's Avatar
 
Join Date: Jun 2005
Location: Chester
Posts: 53
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by KCGSLSE
All I have to say is PB Blaster and/or a Sawsall.
damn didnt see the other posts. lol. sorry. it usually works the best i think. just layer that **** on there.
Old 09-22-05, 06:35 AM
  #23  
Junior Member

 
nwalek's Avatar
 
Join Date: Jun 2005
Location: orchard park, ny
Posts: 30
Likes: 0
Received 0 Likes on 0 Posts
Acetylene torch - till its cherry red or till you get rust in your eye - then pull out the sawzall
Old 09-22-05, 07:42 AM
  #24  
Go Hawks!
Tenured Member 20 Years
iTrader: (1)
 
64mgb's Avatar
 
Join Date: May 2004
Location: Cedar Rapids, Iowa
Posts: 1,946
Likes: 0
Received 2 Likes on 2 Posts
I vote for Saws All. That's how I'm going to remove mine. Just cut it off and hang the new stuff. Just don't cut the intermediate pipe if you're going to re-use it.

Rich
Old 09-22-05, 07:48 AM
  #25  
backyard tuner

iTrader: (1)
 
Paradox's Avatar
 
Join Date: Sep 2002
Location: BC, Canada
Posts: 1,265
Likes: 0
Received 0 Likes on 0 Posts
get a cutting arbor + adaptor for a power drill. chop it to hell, its really not worth trying to keep your 20 year old hangers when buying new ones is only a few bucks.

g'luck


Quick Reply: I'm trying to take off my old exhaust...



All times are GMT -5. The time now is 10:17 PM.