Thread: What we've been up to(new numbers posted on page 5)

yeah the 4:1 collector and transistion look nice imo.

stratton.

i have done the conversion from a tri-y to sr20 and what i have noticed is the space between ports they are more separated on sr20 motors so modifying it will require to separate them, and i think its harder to do that with this kind of design... but looks awesome and should make so power tho...

Yea, I was thinking about the easiest way to go about that. Maybe cutting the original flange off, placing a torch on each runner where they start to curve to get it red hot, sticking a cheater bar/prybar in the inlet of each runner and bending them slightly. Wonder if that would work

What size is your choke?

yeah....

b18 4-1 with and sr20 gasket for size comparison i took




ports are almst same size ,just spaced farther...

Thats what I did with my erick racing header only move two tubes with heat

That's quite a difference, I was hoping they would be a little closer than that.


Ok, good to know that it works. You only had to bend two runners, the other two runners lined up fine already? I originally was searching for your erick racing header, but I guess they stopped making them a long time ago because I havent found anything. All the info on them is from years ago.

When you get them all done just make some port if needed and to tune have fun

Checked it today. 20mpgs and that's a mix of highway pulls, highway driving and city. I'm happy with it.