Originally Posted by DS Motorsport
M7H do you know if the new efra rules, allowing the turbo scoop, also count for nomac?.
I've looked for it but couldn't find a answer anywhere.
But if it's so it;s a good change because it means more power.
I've sent you a PM....
In general (for people who are interested) the Dutch regulations are the same as EFRA, which means a so called "turbo scoop" is allowed but it can not end (or begin) in the crankhole.
The crankhole (and don't forget this is the old rule!) has a max diameter of 7mm, and should be perpendicular (90 degrees) on the rotation axis (WASP REV not allowed!!!)
Also the end of the hole near the backplate should be continously round, with a max rounding (chamfer) of 0.5mm, so the turboscoop can not be a part of the hole. NOMAC regulation.: 11.1.3 (jaarboek 2006 pagina 11.3)