SlipAngle

Metal weight aside, which is the better?

I would much rather TIG SS, as that is all my welder is set up for.

I'm assuming aluminum would have the advantage on the hot side, but ss would have the advantage on the cold side.

Aluminum would help heat transfer from the piping to the engine bay air on the hot side.

SS would have better insulating properties on the cold side to protect against hotter engine bay air.

Any opinions?

WJM

...there isnt a heat exchanger. So if you have the material just do it...

BlackS4tt (Josh)

Stainless, much easier to work with if you already have a welder set up for it.

Mr. ragTTop!

is you're better choice, it can dump heat way faster then SS can. And for this application denser air flow is ultimately what you're after. As the engine bay heats up so does stainless then it retains the heat & it won't dissipate anywhere near as fast as Aluminum.. Then SS tubing actually begins to work against you & compound the problem with heat build up in the engine bay and worse thinning out the air flow as it passes threw the SS tubing. The only thing that stainless has going for is yes it's easier to weld. But on the other hand you can also find a good tube bending shop and have the Aluminum tube bent to you're needs then have it Anodized for great looks too and screw the welding entirely!
...Just my professional opinion, good luck!

reddiamond

http://store.racing-solutions.org/
www.siliconeintakes.com

check out these two sites.
personaly i like mild steel , easy to work with, and inexpensive.
as far as heat transfer i dont think it make much differenceaudi/vw porsche has used aluminum, steel ,ss, and plastic on there cars as have all the other oem's

A400

They make some cheap rollers, or a good tube shop may have it available. Also if this is imp. to you, then you can get alum. in different colors.