The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1960 - 1966 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 11-29-2006, 01:34 PM   #1
bloody hammer
Registered User
 
bloody hammer's Avatar
 
Join Date: Oct 2006
Location: Austin, TX
Posts: 100
Leaky Exhaust Donut

I just found the exhaust leak I've been hearing on my new '62 Step.

it's one of the exhaust donuts. I'm assuming those are pretty easy to replace?

Although.... a guy I was just talking to mentioned the bolts are known to snap off easy when removing them. He even suggested using a small torch to heat them up first.

Any advice or suggestions?
bloody hammer is offline   Reply With Quote
Old 11-29-2006, 01:52 PM   #2
SIR
SIR
 
SIR's Avatar
 
Join Date: Apr 2005
Location: grants pass oregon,usa
Posts: 658
Re: Leaky Exhaust Donut

...there's this stuff called "p-b,blaster" it's an airisol spray you can buy at your parts store spray it on and wait it will take some time so go slow...once it has broken loose move the bolt back and forth to keep from jambing the threads keep spraying it on till you can remove it don't put a flame (torch) near this stuff it WILL BURN!! and if the worst should happen....sh*t can it and go get a good set of headers....no mo problem...good luck.
__________________
66long low fleet http://community.webshots.com/user/LVNR66
SIR is offline   Reply With Quote
Old 11-29-2006, 10:24 PM   #3
kdevore2
Registered User
 
Join Date: Sep 2006
Location: Centralia, IL
Posts: 27
Re: Leaky Exhaust Donut

PB Blaster works good but the trick is to soak it way before you start to work on it. I'd spray it a couple times a day for at least a couple days before I put a wrench on it. Also, if you got an impact wrench (air or electric), use it to hammer on it and break it loose rather than putting a wrench on it and twisting it off. Go easy with the impact then work your way up. Switching to a header is a good idea too but more than likely you'll run into the same problem there with the bolts going into the heads. Break one of those off while trying to remove the stock manifold and you'll really be kicking yourself. Patience is the key! Good luck!
kdevore2 is offline   Reply With Quote
Old 11-29-2006, 10:51 PM   #4
Dadsredwagon
Registered User
 
Dadsredwagon's Avatar
 
Join Date: Aug 2006
Location: Spring,TX
Posts: 342
Re: Leaky Exhaust Donut

agreed PB blaster....
Dadsredwagon is offline   Reply With Quote
Old 11-29-2006, 11:06 PM   #5
Eliasj123
Registered User
 
Join Date: Oct 2006
Location: SoCal
Posts: 108
Re: Leaky Exhaust Donut

X4 What everyone else said..

Recently, I replaced all three donuts and busted the last bolt I took off. It was a pain getting it out without damaging the manifold.. Although, I was really surprised how easy it was to take off the exhaust manifold on my V8.. minutes..

Be careful using using a torch after you used PB Blaster... You don't want your engine bay to catch on fire if you over sprayed it... Don't ask how I know..

Elias
Eliasj123 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 01:25 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com