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  1. #1

    gp1200r .... modd'd .. what prop should i be using...

    My ski is a 1200r stock weisco piston , ported jugs wave eater clips reed stuffers , f/a , jetted carbs, d plate stock exhaust , premix oil 36:1 ams oil... r&d heads ( going on this weekend) i have island mod 4 plate with a 13/19 prop on it now .. was thinking about going to a 14/20 ? what i notice a big diffrence? I'm more worried about top end then bottom... I got the ski on the fat side right now and gotta turn the t handles a little more n lean it out but its got killer mid range to top end power.. Just looking for a little more up top.. Thanks.


  2. #2
    Happily Self-Employed WFO's Avatar
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    Quote Originally Posted by 00gp1200r View Post
    My ski is a 1200r stock weisco piston , ported jugs wave eater clips reed stuffers , f/a , jetted carbs, d plate stock exhaust , premix oil 36:1 ams oil... r&d heads ( going on this weekend) i have island mod 4 plate with a 13/19 prop on it now .. was thinking about going to a 14/20 ? what i notice a big diffrence? I'm more worried about top end then bottom... I got the ski on the fat side right now and gotta turn the t handles a little more n lean it out but its got killer mid range to top end power.. Just looking for a little more up top.. Thanks.
    you need to run it with the 13/19 and see what the rpms are now, then determine if you need more impeller

  3. #3
    Yellow93's Avatar
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    looks like you have the mods to turn a 14/20 dynafly, I would upgrade to an 05 and up pump and try that... pending your rpms from the 13/19 as suggested by WFO first.

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