Comments by "crazypj" (@1crazypj) on "Bore vs Stroke - What Makes More Power?" video.

  1. I'm a motorcycle mechanic so not trainedin engineering or engine design but I've done a lot of reading over the years. Doesn't connecting rod length have an effect on piston acceleration, side loading and when maximum torque is developed?( rpm) Burn time is relatively fixed which is why ignition has an advance curve to start burn BTDC with maximum pressure somewhere around 14 degrees ATDC. Unless a manufacturer is designing a totally new engine, 'ordinary people' are looking for ways to maximise what they already have , bigger bore generally being the cheapest and easiest but with limitations on maximum bore size due to cylinder spacing. The largest overbore I've ever done was 14mm which actually utilised the oversize ports way better than the manufacturer (1970's designs, big ports, high cfm, low gas speed)
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