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  1. #1
    Ask me about my two girl shows havoc's Avatar
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    Cool pair of 2003 GP1300R (no mods)

    Okay guys I just picked up a pair of 2003 GP1300R boats with 35 hours on each.
    What is my first move?
    Do they really require the full First stage mod kits?

    First let me tell you what I have.......

    I recently bought these for my 2000 GP1200R but I am now thinking I should install them on one of the newer boats. Here is the list:

    R&D ride plate
    R&D pro series aquavein intake grate.
    R&D Anti cavitation cone.
    R&D Pro pump plug kit.
    Solas concord impeller YF-CD 13/19.
    oil injector removal kit.

    Is there anything else I need to get for this boat to get it up to 70+ mph??

    thanks for your help in advance this is a great forum!!!!!


  2. #2
    Chrisrokc's Avatar
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    Quote Originally Posted by havoc View Post
    Okay guys I just picked up a pair of 2003 GP1300R boats with 35 hours on each.
    What is my first move?
    Do they really require the full First stage mod kits?

    First let me tell you what I have.......

    I recently bought these for my 2000 GP1200R but I am now thinking I should install them on one of the newer boats. Here is the list:

    R&D ride plate
    R&D pro series aquavein intake grate.
    R&D Anti cavitation cone.
    R&D Pro pump plug kit.
    Solas concord impeller YF-CD 13/19.
    oil injector removal kit.

    Is there anything else I need to get for this boat to get it up to 70+ mph??

    thanks for your help in advance this is a great forum!!!!!
    Send the R&D ride plate to Jim or Carl for modding.
    Keep the intake grate.
    Keep the PPK.

    Not sure on the rest, I don't use those anti cavitation cones, or havent yet. I have a 14/20 DY and it is kinda tall but works great so the 13/19 on a stock motor 2003 should be good. I'm not sure about the oil injector kit. I don't think many people do pre mix on almost stock 1300r's but I could be wrong. Only time I have done it is on a fresh rebuild.

  3. #3
    1.R&D ride plate
    2.R&D pro series aquavein intake grate.
    3.R&D Anti cavitation cone.
    4.R&D Pro pump plug kit.
    5.Solas concord impeller YF-CD 13/19.
    6.oil injector removal kit.

    1.good choice-have it modded-or angle it yourself. The modded plate alone can get 4-5mph...best bang for the buck.
    2.1200 or 800? either way is good...1200 gives better holeshot and 800 is faster. Its needed for saftey anyway.
    3.dont need it...no better than stock
    4.good idea for both skis
    5.should work well
    6.personal opinion-some dont like the hassle, some like the insurance it provides. I dont think Ive heard of an oil pump failing though (on its own that is )


    "Is there anything else I need to get for this boat to get it up to 70+ mph??"

    If your plate is modded, it should be easy to get to 70. It is addictive though so be careful going down the modding path. Next goal will be 75 then 80 and every jump gets more and more expensive. Search the forum and you will see enough mods (some free) to keep you busy for a while. Also Phillip has a good site that gives lots of tips.
    Last edited by porksword; 02-13-2007 at 02:53 AM.

  4. #4
    Moderator RX951's Avatar
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    I wouldn't run the 13/19. Get a concorde YF-CD 14/20 and have it depitched to a 13/19. The 14/20 has a different root angle and hub design that allows it to flow more water.

  5. #5
    Ask me about my two girl shows havoc's Avatar
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    Okay thanks for the feed back for above. My next question, is it worth the $1200.00 more to purchase the rest of the stage ll kit??????

    Performance cylinder head kit
    Free flow exhaust kit
    EFI control unit
    flame arrester kit
    Boyesen reed stuffers
    trim tabs
    pro series adjustable sponsons
    D-plate
    temp synsor chip

    Does all this really make a differance??????

    thanks guys
    JD
    Last edited by havoc; 02-15-2007 at 02:37 AM.

  6. #6
    Ask me about my two girl shows havoc's Avatar
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    Okay I took the boats out for a little test spin yesterday..........big fun......each ride was great. The first boat I made 62.9 but it was a little rough and it kept coming un-hooked. The second boat was a steady 66. The water at that time was a little smoother. I think I need to test them again to see which boat I'm going to modify.

    No one wants to answer my second question in the thread above

    thanks guys.

    JD

  7. #7
    Having fun is the most important part. You can buy these parts for good results, but often times the parts are not needed or it can be accomplished cheaper.

    Performance cylinder head kit= works good, but I would have the stock head milled.
    Free flow exhaust kit= good holeshot with a little slower top speed, louder.
    EFI control unit= you will need it for most of the engine and air mods.
    flame arrester kit=lets it breath better, race filter is probably better, or you can run without an airbox cover (if you dont get in rough water).
    Boyesen reed stuffers= I've never tried them.
    trim tabs= keep the stock tabs and add shims if needed.
    pro series adjustable sponsons= keep the stockers and step them as directed in how to section.
    D-plate= good idea, might loose a few rpms but it worth it to get rid of the cat.
    cat sensor chip=you need it on an 03 if you get the d-plate

    Hope that helps.

  8. #8

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    If you are going down the root of heads, EFI ride plate. scoop etc then you should also consider:

    VF3 reeds
    3 degree key
    05 HO pump and go 14/20 DF

    That plus the other stuff recommend (angled plate, heads, grate etc) should give you a 70 to 75 MPH ski

  9. #9
    Hydrotoys's Avatar
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    2003 GP13R?

    1st thing you should do is reinforce the pump tunnel and verify the shoe inserts are upgraded.

  10. #10
    Ask me about my two girl shows havoc's Avatar
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    thanks guy you've all been very helpful......

    porksword: You seem to have saved me a few bucks......much appreciated.

    kevski: I have a YF-CD 13/19 I was going to install in my 1200. Do you have any thoughts on using this impeller in my 1300?

    hydrotoys: Yes 03 GP1300R, I had planned on the tunnel reinforcement but what is the shoe inserts upgrade all about?

    thanks again guys you are wonderful. Oh crap did I just say wonderful? I mean you guys are awesome, Kewl, bitchin, the ****s.

    thanks

    JD

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