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Go Back   PWCToday > PWC Industry Leaders > Harry Klemm - GroupK

Harry Klemm - GroupK PWC advice, by Harry Klemm, Owner of GroupK, a professional aftermarket high performance Jetski shop

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Old 04-13-2009, 03:50 AM   #1
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Join Date: Apr 2008
Location: Austin, TX
Age: 40
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Horsepower estimate big bore 850

Hello Harry,

I believe the SXR comes with 80 hp from the factory.
I just sent my cylinder off to you for the 850 big bore and pump gas porting.
How many hp would you estimate my SXR will have after your 850 big bore and porting?
*also running Factory pipe, Novi carbs, CDI ignition, light weight flywheel (not sure this increase hp, but just response).

Thanks,

Eric
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Old 04-15-2009, 12:57 PM   #2
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Re: Horsepower estimate big bore 850

Having not done any dyno testing with this setup, I wouldn't even try to hazard a guess (Every time I've guessed in the past, I was seldom close)

Respectfully, Harry Klemm


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Originally Posted by ekrohn View Post
Hello Harry,

I believe the SXR comes with 80 hp from the factory.
I just sent my cylinder off to you for the 850 big bore and pump gas porting.
How many hp would you estimate my SXR will have after your 850 big bore and porting?
*also running Factory pipe, Novi carbs, CDI ignition, light weight flywheel (not sure this increase hp, but just response).

Thanks,

Eric
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Unless otherwise stated, responses to all forum posts are based on my personal experiences working within the PWC industry, and developing high performance PWCs since 1987.

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