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Welding cracked exhaust manifold

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Old Apr 2, 2007 | 01:55 PM
  #1  
bxmas13's Avatar
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Joined: Mar 2007
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Default Welding cracked exhaust manifold

Quick question. I have a 99 DX with the obligatory cracked manifold. The dealer has already turned me down for warranty work, so I am left with 2 options. Try and weld the crack shut or buy a new/used part. Being that I have extremely limited funds I would like to try and weld the manifold.
I would like to weld while the manifold is still connected to the engine, to prevent warping. Is there anything I need to do to protect the computer while I weld?

Thanks for any/all comments.
 
Old Apr 2, 2007 | 03:15 PM
  #2  
Dogmeat's Avatar
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From: Bay Area, Cali
Default RE: Welding cracked exhaust manifold

Make sure you have radio code....then disconnect the battery. Welding is only going to buy you some time. Start saving for a new manifold.
 
Old Apr 2, 2007 | 04:58 PM
  #3  
windcalmer's Avatar
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Default RE: Welding cracked exhaust manifold

Are you sure that you know what metal your manifold is made of? Do you know how to weld?
 
Old Apr 8, 2007 | 08:42 PM
  #4  
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Default RE: Welding cracked exhaust manifold

Yeah bro. just weld him. i did. by the way its cast i would say. good luck. Hoffy
 
Old Apr 8, 2007 | 08:45 PM
  #5  
ef4life's Avatar
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Default RE: Welding cracked exhaust manifold

defiantly disconnect the battery first.
 
Old Apr 9, 2007 | 12:11 AM
  #6  
hondapwr's Avatar
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Default RE: Welding cracked exhaust manifold

i have seen welded one last a while but if u dont have funds i would say cut off and use stock flange ang make ur own 4-1if u have some good welds to lay down i did it a while ago to mine looked sweet and had like 10$ in pipe
 
Old Apr 9, 2007 | 06:17 AM
  #7  
windcalmer's Avatar
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Default RE: Welding cracked exhaust manifold

Only problem, if the mani is cast iron, you cannot weld it to steel.
 
Old Apr 9, 2007 | 06:49 PM
  #8  
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Default RE: Welding cracked exhaust manifold

Dont weld it in the car.2 many things could go wrong.pull it out and g-clamp it down to a flat benchif warping is a prob. its best to heat it cherry red with a oxy then weld it still hot. Hoffy
 
Old Apr 9, 2007 | 07:18 PM
  #9  
AOL.COM's Avatar
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Posts: 1,446
From: somewhere in ct
Default RE: Welding cracked exhaust manifold

i have the same problem, at first i took it off & welded it then put it on - the weld cracked
welded it agian on the car, its hard to get under the bottom
& it still leaks[:@]

[sm=signs003.gif]

 
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