i dropped off my coolant items with him, he is still working on it...my turbo kit comes in on feb 9th, so maybe i'll get to snag the motor by friday

 

Hijacking question....Would you ask him if Mazda will compete with the 787B again like the American Lemans DP division or any future stuff.

I remember he had a coup[le 4 rotors laying in the shop at one time.

 

93black, do you know why he prefers to round out the exhaust port opening vs. a straighter bottom like most porters prefer?

 

GT35R arrived today

 

Because Mr. Engman has alot of experience and actually knows how air flows through an exhaust port. If the bottom edge of the exhaust port is flat, airflow is really decreased. If it is slightly rounded like the picture, flow increases. You do not want a wide port opening line. The exact opposite is true with the top edge. A rounded top edge hurts flow whereas a flatter top edge helps it. On a flowbench you can really see this.

 

yeah and you should see his flow bench it's wicked

 

Great stuff,



so on a pp intake would that mean bottom end flat and top end rounded, just the reverse???



CW

 

pic of fuel system and turbo mounted to a dummy motor

 

close fitment of downpipe



Sean@A-Spec is truly talented

 

another view