manifold repair

48 chevy 216 ,i removed the exhaust manifold and replaced the gasket but 1 of the flanges is messed up at the mating surface. what is the best way to repair.looks like it was rusted .

 

Cast iron? Aftermarket pot metal? There are a few different ways to go about this.

 

i would say it is cast iron,

 

Well, I kinda figured that but thought I would ask. I have actually seen people weld them even though cast is a mother to weld to. They took there time and welded, grinded, repeat! I have personally used a product called "Devcon" to get me by. Would not be my first option but it worked at the time.

 

and where do you get this,i was told to braze it or jb weld.

 

www.muggyweld.com

 

Braze does work, for me it is not to plentiful here in small town iowa. Devcon I picked up through fastenal at the time, it is like a super jb weld! I stuck a penny in the left over mixture when I was done and have taken a hammer to it and it doesn't even crack. Good luck man

 

Cool shit, just checked the link.

 

Pitting won't matter if the pits don't actually reduce the flange thickness right across the surface, the gasket will cover them up. Exhaust-grade metallic silicone helps. If it's really bad, another 216 manifold won't be hard to find.

 

hey onelow i had some of that revcon in my tool box. used it and it sealed . will it burn off?

 

well is it the eshaust or intake?? on the exhaust exhaust sealer will work fine let it air dry for a couple days after assembley or ive it some low artificial heat to cure it out

 

its on the exhaust ,on the manifold ,just some deteriation of the metal.

 

Heat the area where you want to repair and braze it , or you can repair it by welding it with nickle rod, if you are able , it helps to drill a small hole on either side of the area that is to be repaired. Rick.

 

well i removed them and took to the machine shop,he planed both and its fine now.$25 fix