I've recently splurged and bought a ton of Specification manuals for the different manufactures and Kawasaki has the best books so far for the amount of detail they give. I can't find an offical statement for what Honda claimed the ATC250R had for horsepower and torque (including service manuals, spec books, etc), the Kawasaki book gives the numbers though.
I would be interested to know what the ATC250R and YTZ250 were claimed to produce, any source material? I heard the cert of origin has this info?
My Kawasaki book collection only go back to 1985, but I have coverage for all models (including motorcycles) up to 2004, and 2005 I have atv's only covered. I'm slowly putting this info on my site so everyone can find it easier, so I want only documents related by Honda, Kawasaki, Yamaha, etc. I'm not after what a magazine says, or someone else's dyno numbers.
Below is the 1985 Tecate A2. PS is real close to HP, 37 would convert to 36.5hp.
I can look up specs for other models, but check on my site first to make sure I don't have it already posted up.
https://atvmanual.com/
Quick list of interesting machines:
Tecate:
1985 A2 - 37PS
1986-1987 B1-B2 - 42PS
Tecate 4:
1987-1988 A1-A2 - 42PS
I made this thread since google results seemed to not give any solid info, just people guessing, figured I'd post some real numbers =).