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Old 07-06-2005, 05:00 AM
newblade newblade is offline
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Location: Kentucky
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22 hp kohler

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?
new Bad Boy Pup Owner 2007
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Old 07-06-2005, 08:33 PM
specialtylc specialtylc is offline
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It wont have anymore HP than when it was new.
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Old 07-06-2005, 08:59 PM
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LawnBoy89 LawnBoy89 is offline
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Why wouldn't you see horsepower gains after you bore it out?
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Old 07-06-2005, 10:07 PM
cushman cushman is offline
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Boring the motor .010 should result in a nice power increase.

Assuming the power increase is proportional to the displacement increase your motor will have 22.14 HP after you're done.
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Old 07-07-2005, 01:26 AM
khouse khouse is offline
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Location: lee's summit, mo
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on a new engine and a new engine bored .020 over you won't feel any noticable difference. But you will feel a difference from a worn out engine after a rebuild bored over or not. I find that most engines are running under the rated rpm's so make sure your at the factory high idle speed ussually at least 3600 rpm's
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