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  1. YFZ Powertrain
    Just thinking about what benefits I would get from a stoker crank in a 06 engine. Now I don't want to go over a 12.5:1 compression ratio and want to stay on 93 pump gas. It would be paired with a JSR tall 98mm cylinder to keep compression down. Would I have a better rod rotating angle for the...
  2. YFZ450 & YFZ450R General Talk
    To start off I have a 06 Carb with a Miller ATV Ported head, 96mm 12.4:1 Wiesco Piston, barker exh, FCI and cam mod. My last dyno I had was with that new setup at it dyno at 47hp. Which I remember others saying this dyno runs about 3hp low but I feel thats not that true as I run the same as a...
  3. YFZ Powertrain
    Hi first post here. 2019 YFZ450R Stage 2 hot cams HMF full exhaust Power Commander V I'm going to do a 478 Cylinder works big bore, due for a new piston so I figured what the hell. I've been looking for maps for the PC-V to accommodate the changes, I haven't had any luck finding any...
1-4 of 5 Results