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  1. #1
    "Hustler" Inkaddict's Avatar
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    Getting Head!!! haha

    Ok so the Dirty Jersey season comes to an end... My engine is bone stock with 110 hours running a consitant 70mph on speed runs. I have a few questions and need advice and opinions. Im planning on 40mm sonic boom throtle bodies from Ross, Vf3 reeds, a 3 degree keyway, and a head. Is 110 hours nearing top end rebuild time??? It runs strong but Id like to make it through next season. What head should I use with the mods I have listed in my sig. at the bottom??? Am I leaving anything out I should be doing? My prop is uncut and costing me rpms but im thinking the engine mods will compensate. My rideplate is stock due to the "never flat" Jersey ocean... I will say that I WANT TO GO FASTER!!!!!!!


  2. #2
    Duke's Avatar
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    That single bar intake is costing you some speed and rpms, those were intended for CC racing.

    REINFORCE THAT TUNNEL!!

    No need to rebuild yet, 250-300 hours on those pistons are very doable.

    Other suggested mods sound good and should yeild great improvements.

  3. #3
    Hello INK, pm Jims1300 and he can take care of the cylinder head for you much cheaper than an aftermarket head.. Looks like you have the right combo planned out. With all those mods you may end up needing a 14-21 or 22 bend on the impeller.. Jims1300 can help there also. Just let me know when you are ready for your throttle body mods.. Thanks, Ross

  4. #4
    My son (mohawk man) jeffsntx's Avatar
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    Ink, for what it is worth I have an 06 with the following mods:

    3* key
    Milled stock head by Jims1300
    Jetworks
    Riva free flow
    1200 double bar grate
    Sealed pump shoe
    Old style Riva plate (NO FF MOD)
    Sonic booms
    D plate
    EFI controller
    Stepped stock sponsons

    I have a prop coming that should be here to do some testing this weekend. If you did what you are planning on doing our boats would be almost identical. If I dont have any problems this weekend I will report back with numbers so you will have something to compare to.

  5. #5
    "Hustler" Inkaddict's Avatar
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    You guys are F'n great!! When Jim does the head does he just mill it down?? I will be reinforcing my pump tunnel along with the speed mods Ill be doing... Im really curious as to how your ski performs Jeff. Please let me know how your testing goes this weekend!! Thank you again for all your help!

  6. #6
    THE PLATE MAN JIM'S PERFORMANCE's Avatar
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    Quote Originally Posted by Inkaddict View Post
    You guys are F'n great!! When Jim does the head does he just mill it down?? I will be reinforcing my pump tunnel along with the speed mods Ill be doing... Im really curious as to how your ski performs Jeff. Please let me know how your testing goes this weekend!! Thank you again for all your help!
    To get a 1300 head to 150 -155 psi. all that's needed is to be milled down. If you have any questions feel free to give me a call. Thank you, Jim

  7. #7
    spud's Avatar
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    Don't you recut the squish? Or is it so wide at factory specs milling it down brings it into the performance world.

  8. #8
    THE PLATE MAN JIM'S PERFORMANCE's Avatar
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    Quote Originally Posted by spud View Post
    Don't you recut the squish? Or is it so wide at factory specs milling it down brings it into the performance world.
    It's got over a 40 thousand step before you even touch the squish band.

  9. #9
    OLD # 7 IEGPR's Avatar
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    Hay Jim, so would 30 thou be a good amount to cut??

  10. #10
    Moderator RX951's Avatar
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    please reinforce that tunnel asap.

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