Whats up guys.

Finally biting the bullet and boosting my AP1.

Before anyone tells me to go buy a $1800 manifold, no thanks I'd rather spend $250 on materials and the rest on an AEM EMS V2. I'm a certified welder, TIG, MIG and Stick. I build headers for nuclear power plants that handle thousands upon thousands of degrees of heat, I can manage to weld a manifold for a car.

Back on topic. I'm buying this manifold flange to build off of in 304SS:

http://www.bmcrace.com/honda-s2000/b..._F20CHF_63.php

And i'm buying sixteen 1-1/4" inch 304SS 90º bends and about 2 feet of 304SS straight pipe. I plan on replicating the full race manifold.

My question is should i go schedule 10 or schedule 40? I plan on making around 600whp on E85 on a Precision 6262. Right now i'm leaning towards the schedule 40, but any input is appreciated.

Thanks.

 

Do it right and use tubing. Look into the mazworx flange instead of that bmc one. And purge weld the manifold

 

Definitely going to purge weld the manifold, I figured I would have to in order to not get porosity in the welds. What do you mean tubing? I am ordering tubing?

 

schedule 10 manifold always seem to crack and dont seem to last very long

 

Thats what I was worried about, figured I would get some more info before I went ahead and ordered though.

I also looked into the mazworx stuff, doesnt seem like they have stainless manifold flanges. I definitely want to build my manifold from stainless. Any other suggestions?

 

Yep he is rite do 40 or u will have problem after problem all the top mani company are 40

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Whats the advantage to using slip joints?

 

No schedule is pipe. Not tubing.

 

No schedule is pipe. Not tubing.
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Gotcha, anyone know where i can get stainless bends and tubing from for a good price?

 

It has been done. That's how mine is. Burns collectors and a TUBE header that weighs next to nothing compared to a pipe. I've seen a couple on this forum too.