They do sound awsome. Wish my car sounded like that.

in this class they are restricted to a lower rpm, like 7500 or something, so 415 is about right.

the black one at sevenstock last year looked like a cosmo 20b with RB style PP housings.

this should clear it up.

http://videos.streetfire.net/video/2...kel_640747.htm

sorry this might be a noob question, but in that pic it seemed as if it wasnt F/I it looked carbeurated, unless i was mistaken by the intercooler thing on top of the motor.

That's nothing more than a box with an air filter on the top that houses the ITBs

gotchya, i've seen some people run them without the box on top, i've always wondered this however, since there is no intake to properly distribute air evenly to each chamber, couldnt one be working more than the other??? also, how much more performance can you gain since your only sucking air from the engine when you'd want cooler air for better performance.

i have been curious about constructing something similiar for my 82 but there is not much room for...well anything. maybe i should just be content with unifilters.

The air box is sealed to the hood and open at the rear to take advantage of the high air pressure zone at the cowl. That intake is drawing fresh air and it's being forced in at speed. Without the air box you would be drawing in hot engine bay air and you would have higher intake temps which would be less than optimal. The box is a much better design.

I appreciate all the input. At the time, I was looking to source an e-shaft and thought I might would see where they are sourcing them. Interestingly enough, I just started looking up the websites for the race teams and most had phone numbers for their engine builders or engineers. So, I called them and talked to them. One guy said,"I maintain 8 engines and only have 12 e-shafts so I couldn't let any go". All the race teams were pretty nice. One team even hooked me up with their engine builder in California. I called him and talked to him for a long time about 3 rotors and what he recommended on engine builds. The race guys seem to get their eshafts from Mazda (Mazdaspeed) and I think they were $3500-$4500 each. They don't buy engines, just all the parts individually. This might be old news to most, but I found it interesting.