Homemade header

[950speed]

Just a simple question, for a header to have high flow and not restricted, could you just make your own cut a flange that fits or use the exhausting one just cut it off. Can it just be tubing that’s Been bent once or twice.

Mainly do I need a “3stagw header” just to open it up and have the engine preforme better, for something like a 212 or 950 series

 

[mckutzy]

I did just that on my bike...
It was a 1" EMT tubing elbow and a few straight bits, A piece of scrap for a flange welded together, copper exhaust gasket(cause I ripped the oem one).
The flange has an opening the same as the exhaust port. I did however have to slightly dent and grind out the space for the flange nut to rotate freely.

 

[Ebrownie]

Just make your own flange and weld a piece of tubing on. I used the exact same thing, 1” emt. What I did with my flange is I used a dremel and ground the hole in it so it matches the exhaust port from the engine perfectly, because it is a sort of oval shape and not a perfect circle. Then I bent my tubing and just welded it up. I’m sure it’s not perfectly ideal for performance but it is a major upgrade from stock. Also I love the sound, you can hear it easily from half a mile away

 

[mckutzy]

They do sound good... Surprisingly enough...

 

[Mrturbo458]

I used the stock predator flange, ported out and a section of 1" conduit, works well, but the zinc burning off is not good to inhale. You can soak the conduit in vinegar and it will remove the zinc, thus making it better.