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  1. #1

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    Steering Nozzels sizes?

    What is the "biggest" measured?


  2. #2
    Duke's Avatar
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    Quote Originally Posted by ExciterGPR View Post
    What is the "biggest" measured?
    I "think" the SHO has the biggest steering nozzle. Its oval so I'm not sure what the total square inch would be. However, its thick aluminum so it can be bored much larger if needed.

  3. #3
    philip_gpr's Avatar
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    Riva is big

    Protec is similar to stock, which is smaller than Riva

    SHO is very narrow, I wouldn't suggest you use it on a 2 stroke unless you bore it out (which is difficult to do by hand) so it is best left to one of the shops to do

  4. #4
    Hydrotherapy's Avatar
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    Quote Originally Posted by philip_gpr View Post
    SHO is very narrow, I wouldn't suggest you use it on a 2 stroke unless you bore it out (which is difficult to do by hand) so it is best left to one of the shops to do
    still looking for a uk m/c shop to do both my sho nozzles, local one i found before xmas threw it off the bore table and trashed it

    anyone have an idea of what adverse effects the sho stock nozzles has on a gpr

  5. #5
    mjh3ides's Avatar
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    Quote Originally Posted by Hydrotherapy View Post
    still looking for a uk m/c shop to do both my sho nozzles, local one i found before xmas threw it off the bore table and trashed it

    anyone have an idea of what adverse effects the sho stock nozzles has on a gpr
    I read a few posts saying they lost a little acceleration because of the smaller stock diameter with little change on top. The steering might also be looser since it's taller than wide. I have one bored out & ready to test so I'll post some results in the next couple weeks.

  6. #6
    Hydrotherapy's Avatar
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    Quote Originally Posted by mjh3ides View Post
    I read a few posts saying they lost a little acceleration because of the smaller stock diameter with little change on top. The steering might also be looser since it's taller than wide. I have one bored out & ready to test so I'll post some results in the next couple weeks.
    thank you

  7. #7
    Moderator RX951's Avatar
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    My R&D is the same as stock





    Not sure where the RIVA measures


  8. #8

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    How many "mm" are the biggest?

    I have one that are 92mm wide (from Rivas SS).

    What is the advantage with a wider nozzel?

    More acceleration less top speed I assume..

  9. #9
    yz450f's Avatar
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    i just ordered my sho nozzle from boats.net is it going to effect my gpr at all??

  10. #10
    Moderator DrewNJ's Avatar
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    Stock steering nozzle vs. stock SHO nozzle I noticed no noticable difference in speed or acceleration and a tighter feel on the steering with the SHO.
    This is on a 1390 w/HO pump 85mm nozzle.

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