from Dsport magazine... this is for the board archives.

here's the rx6b info:

4 compressor wheels:

tcw 15
54 x 78 mm 48 trim 19-26 psi
261-287 rw rotary hp

tcw 10
59 x 78 56 trim 14.5-22 psi
294-327 rwrhp

tcw 76
56 x 82 47 trim 25-32 psi
307-340 rwrhp

tcw 77
61 x 82 55 trim 30-38 psi
360-392 rwrhp

turbine housings
all same turbine wheel which is 62 x 57 mm 84.5 trim

many turbine housings denoted as:
P13, 16, 18, 20, 22, 25, 27. (on the casting)

according to the article only the last 2 work w the rotary. they offer a formula:

CC (2600) x max rpm (8000)/900,000 = the P number. this works out to be P23... FWIW. i have found generally larger is better w the rotary.

i do wonder if the TCW 15 and 10 were reversed in the Dsport article BTW

howard coleman