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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 01-25-2010, 07:34 AM   #1
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Join Date: Aug 2008
Location: Kearney, MO
Age: 27
Posts: 82
Prop

I just wanted to know if this prop is ok to run with the 99 gp800.

yb-sc-x. I have been using it since last spring but I am doing some mods like compression raise (155-165psi) and FA.

Thanks
Randy
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Old 01-25-2010, 11:28 AM   #2
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Re: Prop

Randy,
I think you'll find that the "X" prop is much too low a pitch. We recommend only the Solas "K" prop.

Respectfully, Harry Klemm

Quote:
Originally Posted by Randy11023 View Post
I just wanted to know if this prop is ok to run with the 99 gp800.

yb-sc-x. I have been using it since last spring but I am doing some mods like compression raise (155-165psi) and FA.

Thanks
Randy
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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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Old 01-25-2010, 06:26 PM   #3
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Re: Prop

can this one be repitched?
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Old 01-25-2010, 06:48 PM   #4
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Re: Prop

I also have a 98 gp1200 that I am ging to do the same to and the prop on it is YD-SC-XO. What would you say on that on?
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Old 02-02-2010, 01:35 PM   #5
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Re: Prop

In the late 1990s we often used "X" series props onthe 785 Sea Doo platforms, but started running into problems of big inconsistancies in the engine loading of identically marked props. During more recent testing on other models, we ran into the same problems. This added variable made the already hard job of prop evaluation even harder. As a result, we tended towards the Concord and "SC" series props because we found much better consistancy of pitch. Besides all that, we never saw where the "X" series was better in any way over the "SC" series anyway. All that said, I unfortunately don't have any good comparitive info or pitch recommendations for any of the "X" series props.

Respectfully, Harry Klemm

Quote:
Originally Posted by Randy11023 View Post
I also have a 98 gp1200 that I am ging to do the same to and the prop on it is YD-SC-XO. What would you say on that on?
__________________
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.

www.groupk.com
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