exhaust manifold removal
Thread Starter
Racer
Joined: Aug 2011
Posts: 343
Likes: 10
exhaust manifold removal
I am getting ready to remove my exhaust manifolds on my 93'. They look like that they have never been removed. Any tips, tricks and no-no's to know ahead of time? I have never done this on a vette.
Safety Car
Joined: Sep 2010
Posts: 3,752
Likes: 190
From: Indiana PA
PBlaster, let it soak over night, give it a few shots.
Go slow, take your time, those are ALUMINUM heads.
If it feels tight taking it out, stop, go back in and try again. Slow and steady. Heat wrench (torch) maybe needed depends on how bad they are.
Thread Starter
Racer
Joined: Aug 2011
Posts: 343
Likes: 10
Why are you taking them off?
PBlaster, let it soak over night, give it a few shots.
Go slow, take your time, those are ALUMINUM heads.
If it feels tight taking it out, stop, go back in and try again. Slow and steady. Heat wrench (torch) maybe needed depends on how bad they are.
PBlaster, let it soak over night, give it a few shots.
Go slow, take your time, those are ALUMINUM heads.
If it feels tight taking it out, stop, go back in and try again. Slow and steady. Heat wrench (torch) maybe needed depends on how bad they are.
Suckin' gas, haulin' ass.
Joined: Apr 2010
Posts: 1,100
Likes: 8
From: Newport News Virginia
You can replace the valve seals with the heads on. Generally, with good maintenance (oil changes), they shouldn't need much cleaning up besides gasket material.
Melting Slicks
Joined: Jul 2006
Posts: 2,151
Likes: 0
From: Strongsville Ohio
Take your time, driver side is HARD because of the AC and alternator support brackets. TAKE pictures. I did the AIR delete with my headers. The AIR pipes were the hardest thing to take off. I landed up just cutting them off the headers because I knew I was deleting them. Pull the oil dip stick out, then to take the tube out just pull up towards you.
Drifting
Joined: May 2007
Posts: 1,426
Likes: 165
From: Motor City
As mentioned above, the AIR tubes are near impossible. I ended up cutting mine too.
Also, the cat brackets are a royal PIA. I found no way to get a the bolts holding them on so I cut those as well.
Also, the cat brackets are a royal PIA. I found no way to get a the bolts holding them on so I cut those as well.
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Thread Starter
Racer
Joined: Aug 2011
Posts: 343
Likes: 10
Before i cut them (the air pipes), I want to buy new ones. I checked like auto zone and advance autoparts online and they did not list them. Where did you guys buy yours?
Last edited by vetteOnTheRun; Mar 20, 2012 at 07:14 PM.
Drifting
Joined: Dec 2008
Posts: 1,254
Likes: 3
From: Souderton Pa.
I'm about to tackle this project with my car too. I think that my AIR pipes are going to have to be cut too. Hell, I'm just hoping that I can get my headers off without snapping a bolt or worse.
Melting Slicks
Joined: Oct 2007
Posts: 2,310
Likes: 9
From: KB7TIF Ville NV
Careful of 02 sensors, easy to strip off the air injection nuts ect
Safety Car
Joined: Sep 2010
Posts: 3,752
Likes: 190
From: Indiana PA
Again especially with exhaust stuff, penetrating oil/spray and oxy-acetalyene torches work wonders. Blow torch or small butane hand held torch are better for smaller stuff.
Go slow, heat it up red, and should loosen right up. Better to heat the nuts rather than the bolts, use common sense.
Could try that cold freeze spary too.
Go slow, heat it up red, and should loosen right up. Better to heat the nuts rather than the bolts, use common sense.
Could try that cold freeze spary too.
Instructor
Joined: Jul 2010
Posts: 152
Likes: 1
From: Federal Way WA
I just did this 2 weeks ago on my '93. For the AIR pipe on the passenger side exhaust mainfold, i believe i used a 5/8 crows foot; it was a B*&%$ as mine had never been removed and was very very rusty. PB Blaster is your friend, use alot. I used alot of PB Blaster, but it was so tight when i removed the pipe not much if any had made it down the threads, maybe yours will be different. For the drivers side pipe...if you can remove the rubber hose from the pipe, just turn the pipe; the nut is not free spinning like the passenger side (at least mine wasnt, maybe i got lucky). But, i was able to remove the entire system without having to cut or bend or break anything, though the nuts are a little boogered up now. Hope this helps.
