• When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Intake manifold repair - chips!

1968rt

Well-Known Member
Local time
12:34 PM
Joined
Jul 28, 2010
Messages
951
Reaction score
1,278
Location
New York
Picked up an old CH4B. It has chips around the intake ports. I dont want to machine them out it would take too much off the face. My options are: 1-Weld them in, I have a spool gun. 2- use muggy weld to fill them in. 3- JB weld them. A gasket match and then a light mill afterwards should clean them up.

IMG_4755.JPG IMG_4756.JPG IMG_4757.JPG IMG_4758.JPG
 
4. Nothing. Your gasket goo will take care of it.
 
I love the to part epoxy it comes in a tube and you cut off a piece and mix it together. like jb weld steel stick. where gloves and mix it together and then push it in holes and use a blade to make it flush
I repaired dodge neon corroded heads with it . when I was flipping cars. or leave it if you want
like #41 said
 
the liquid 2 part epoxy is also good , probably easier to use for small holes
 
Just curious have you held up your gaskets to them? Is there enough material to blend it out to match the gaskets?
 
I haven't placed a gasket against it yet, but you can see the impression the old valley pan left. There is some room to clean up the edges.
 
Port match it first then worry about anything left. And I agree, gasket goo will handle anything left.
 
Put 0.015" thick paper gaskets on both sides of the pan. Done.

This will also solve your other problem: the leak because the head/intake angles are different.
 
I vote for gasket match/ radius the edges slightly if there is anything left just leave it and go !
 
Don't use any 2 part epoxy without knowing it's heat tolerance, Most 2 part liquid base epoxies basically become goo above 400 degrees. The 2 part epoxy putties (in the tube) don't respond well to gas or oil, your high temp gasket sealer will take care of pits in the heads or manifold's machined surfaces. If you're dead set of fixing the holes Moroso and Edelbrock make epoxies made to be used to mend manifolds after porting.
 
I've fixed pits like that in cylinder head deck surfaces, water pumps, and intake manifolds. Even filled O-ring grooves in heads. All using JB weld. Never had an issue. Current 900hp 15-1 compression race motor has the deck pits filled with JB.
Doug
 
Auto Transport Service
Back
Top