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Polution system on 74 vette

 
nc_scott
I love my Chevy Chevette!
Posts: 12
Joined: 02/11
Posted: 03/03/11 06:42 PM

The previous owner removed the air pump but did not remove the pipes into the exhaust manafolds.  Is there a way to remove these without replacing the manafolds?  I know I will have exhaust leaks if I just remove them.

Thanks,  

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waynep7122
I mow my lawn and find Chevys
Posts: 1114
Joined: 08/09
Posted: 03/04/11 01:10 AM

yes,,,  you will have an exhaust leak....

you are going to want to soak those in WD40 for while first...

there is also a tube that extends into the exhaust port that is sometimes (% 80 or the time.. ) coated with combustion deposits.. making it hard to get out.. and dangerous to wiggle out without the chance of debris falling into an open exhaust port and into the cylinder...

so you are probably better off taking  off the exhaust manifolds to do this...

this is just my opinion..

you will also want to after soaking the tube nuts...  tighten them just slightly to break them loose... using a flair nut wrench...  or ... cutting the tube off and using a six point socket..



it's been so long since i tried to remove one of those i don't remember if they have a 7/16 hex or a 1/2" hex.. on the tube nuts...

i am almost sure that its a 5/16 tube side... with a 1/2 inch wrench...

this would be the proper plug for it as it is NOT tapered pipe thread..

Dorman 43162 Dorman Inverted Flare Plug 4904921
Plug - Steel; Tube Size; 5/16"

81F4qh05cml  

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nc_scott
I love my Chevy Chevette!
Posts: 12
Joined: 02/11
Posted: 03/04/11 11:39 AM

Thanks for your help  

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