The craziest RB offroad motor ever built!!
Combine these parts:
WS73 Crankcase (Black coated)
WS73 Carb (new BB carb)
S7 Turbo Button Head
S5 13mm turbo cut crank
S3 Piston Sleeve (Ported) (UndergroundRC.com has a how-to port video online)
C6 BBT7 Cooling Head (RB's lightest 60mm cooling head, and RB's best head)
run with O'Donnell 97T plug
and RB 2045 pipe and buggy header.....
This combo will blow your mind, its basically a square stroke, 3-port, RB Speed!
You could take it one step further, by installing ceramic bearings after break-in....
It has tons of responsive torque (like the OS speed), great usable power at mid range, and excellent top. Sings like a fat lady at about 230, and gets 8-9min run-times going hard on a big track
If you want a bad-a$$ race engine for next season,... build one of these! It has everything to do with the 3 port!
