Champ alum and ATR headers...

[STP]

Question is: Are Champion Alum GN1R's thicker at the exhaust flange than a 8445 head? I run ATR stainless headers on this thing with a two piece crossover. Problem I'm having is where the two pieces slip together the driver side piece doesn't go into the pass side collector but maybe 1/8". With the iron heads on the car I had about 1". I tried loosening both collectors and twisting thinking that maybe they were positioned wrong. But no luck. I guess I"m either going to have to weld the crossover together or add a section of stainless tubing to the driver side collector to keep the car from blowing the band clamp to bits. Any input appreciated. Scott

 

[Lee Thompson]

headers

Fire the welder up and burn some rod !!!!!
Just don/t hurt our tranny while you are under there.

 

[STP]

Ohh I wouldn't dare..Hey Leo, you should have seen that band clamp. Pulled it off a few days after I got home from Bristol. The alum spacer that the bolts go through was completely melted in half....BTW I'm lucky I have a welder that does most of the work for me. If I had to "burn some rod" no tellin what it would look like. Talk to you soon, gotta get my gall bladder removed on Friday. Been kinda sick ever since I got home from Bristol. Prolly too many Bologna sammiches!!

 

[Lee Thompson]

Friday

Who put an aluminum spacer in the system? Aluminum melts @ 1260.
Good luck Friday. My darling and I will be thinking about you. If I had any pull with the Big Man, I would say a few words for you. Better let her do the talking.

 

[STP]

Thx..The alum spacers come with the band clamps. Don't know why they make them out of aluminum now that you mention it.

 

[The Radius Kid]

Is there room for a stainless expansion bellows at that joint?
I thought about doing that when I realized that stainless really likes to grow when it gets hot.
Might help with the collector cracking problem that these headers seem to experience.

 

[STP]

Yea I considered that and need to look into it further. I used a 3.5" bellow on my exhaust when I built it. Would make the crossover easier to remove than if it was welded. Scott