Posted for "Martin" <wankel@telia.com>:

Time 4 mister Hanover to think things trough.......;-)

The 12A rotor housing is 10 mm narrower in whit than the 13B.
70 mm for the 12A and 80 mm for the 13B.
(60 mm for 10A )

The 12A is 1146 cc AND noting else....
The 13B is 1308 cc .......

Don't mix things up whit insurance policy on cars....or the 1.8 times you
have to multiply the engine cc for racing, just so the un-normal 4-bangers
can keep up.
We do have a 1.8 x cc rule here in Europe.

Aren't automatic gearboxes only for disabled people ??

And yes, the only substitute for cubic centimeters is a Rotary engine....!!

Happy rotation !!

/Martin
MS 880B...ready 4 a 13B