RE: *~ Official RC10GT2 Thread ~*
TZ:
bore = 13.8mm
stroke = 14mm
Some people might say that is a long stroke engine but I'd call it square. The TG uses the itentical dimensions.
I had TZ initially, but since we are newbies to stadium trucks we sent it back for the TG. I could only get the TZ to turn over after hitting the heatsink with a heat gun to 180F. The pinch was very tight. The TG uses a different (cheaper, but more newbie friendly) construction (ABL versus ABC) and has less pinch. And, the TG has a warranty. The TZ doesn't.
Supposedly, the hot trick is to put the 5 port TZ crank in the ROAR-legal 3 port TZ. There isn't anything in the ROAR rules that says you can't do this, but they do specifically prohibit 5 port engines.