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Old 07-06-2005, 05:01 AM
newblade newblade is offline
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kohler 22hp

I am fixing to have to rebuild a 22 hp kohler. Does anyone know how much horsepower will be gained if I bore it out .020 or .010?
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Old 07-07-2005, 01:36 AM
khouse khouse is offline
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if you boring it out just for extra hp then don't spend the cash. just rebuild it to specs. you won't feel the difference on a 20 over bore.
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Old 07-07-2005, 01:38 AM
khouse khouse is offline
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really the best way to get more hp if your going to spend all that money with a bore job then put maybe 400$ more to what you would pay a mechanic and buy a 25 hp command pro.
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Old 07-09-2005, 12:49 AM
CCWKen CCWKen is offline
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I suspect the net gain will be very little, if any. Keep in mind that to gain Hp with a larger bore, you need more air and fuel. Since the carb will be the same, I assume, there won't be any change in air/fuel delivery. What you might gain is a little more torque--maybe 2-4 in/lbs. Nothing that will give you whiplash.
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