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Thread Starter
Banned. I got OWNED!!!
Joined: Jan 2002
Posts: 984
Likes: 0
From: Da Barrio!!!(Irving, Texas)
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I can make my own header. But what size tubing can i go with, and is there any need for back pressure like on piston engines????this is for a 1980 12A THAT WILL BE EITHER STREET OR BRIDGE PORTED(OR CUSTOM PORTED (EXPIREMENTAL 
) I am new to rotary modding !!!! Thanks , Andrew
) I am new to rotary modding !!!! Thanks , Andrew
Old [Sch|F]ool
Joined: May 2001
Posts: 12,855
Likes: 567
From: Cleveland, Ohio, USA
Backpressure is a myth... NO engines need backpressure. What all engines need (or rather, prefer) is tuned resonance.
I recommend getting the Racing Beat catalog, because it is also a pretty good base of technical info. Also good is Paul Yaw's technical articles, can be found on his site personal.riverusers.com/~yawpower
Most people recommend 2" tubes with about 110 inches before they collect... this is extremely long! The main problem is clearance under the chassis.
I recommend getting the Racing Beat catalog, because it is also a pretty good base of technical info. Also good is Paul Yaw's technical articles, can be found on his site personal.riverusers.com/~yawpower
Most people recommend 2" tubes with about 110 inches before they collect... this is extremely long! The main problem is clearance under the chassis.
