GTS1000, FZR1000 & Thunderace crankshafts

Finally pulled the GTS1000 crankcase from a gash bottom end, and it's a surprise of sorts. Thought I had spotted four pits in the GTS crank, that are used for crank position sensing, and there are.

gts1000_crankshaft_marks

and compared to the Thunderace and the FZR1000 (right) there are some significant differences. The Thunderace and FZR are both 8-1 essentially, the missing tooth or reference position is the single milled slot as opposed to the seven part drillings. No wonder the Thunderace project wouldn't fire using the GTS1000 ecu.

Thunderace_FZR_timing_marks

Looks like I could mod the crank, but I think I will end up using a new ECU. The MicroSquirt is small, looks good and is a fair price too.

microsquirt

Go to http://www.microsquirt.com for more info,