Recent content by boscoe99

Stochiometric refers to the mixture of air to fuel that will result in complete consumption of the air/fuel mix. That is, all of the fuel is used and all of the oxygen in the air is used during combustion. Most authoritative sources list it as 15 to 1, but I have seen it incorrectly stated as...

You are confused because the two gentleman that you spoke with Yamaha are confused. Or, maybe they don't know their own asses from a hot rock. Yamaha does not have real engineers in Georgia. The engineers are in Japan. I suspect that he talked to a misinformed technical type and then referred to...

"Sounded like" are the operative words. Was the representative of the male gender? Men (particularly the younger ones) are known to make up answers when they don't know them, rather than say "I don't know". Sounds like what this fellow did. An SX250 does indeed have different compression ratios...