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  1. #1

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    How is this possible

    So according to riva from picture added
    Rxt 260 stage 4 80-81mph 8750

    I have everything in stage 4 except the charger I am still on stock pushing 14lbs
    And my impeller pitched at 14.5/20

    I just recently hit 85 dash which is about 83 to 83.5 on my ski at 8850

    Now only other things I have are custom made fuel rail By me flow through r&d intake grate and just recently lucky cone with red spacer. Also dyno jet power commander

    How am I getting these numbers?

    And how much could i expcet to gain if I was pushing 19 lbs at 8900 and re pitch impeller to like 15/21 or 15/22

    Because I am sure if I stayed with current pitch I would be Damn near 9500 with 5 lbs more of boost?

    Just wondering because I am close to charger rebuild but would rather sell and get bigger charger or even go to 300 charger instead of rebuild

    Any imput would be great. Technical info also as I have built this beast from when it started as a baby and have learned a shit ton on the road of my passion. To go fucking fast
    Click image for larger version. 

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  2. #2
    JT jpt7779's Avatar
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    Pittsburg, Texas Lake Bob Sandlin
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    Skip the SC upgrade and bolt a GRF Turbo on it and bust 90+ mph all day long. You are going to end up that route eventually anyway...........��


    GRF Turbo System for Sea Doo

    All new GO REAL FAST "GRF" Racing Seadoo 4tec turbo system. Complete stainless steel fully water cooled piping and turbo housing. CNC exhaust...
    GFR Sea Doo turbo $4,850.00


  3. #3

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    Just too much and why if I switch to 300 charger conversion are they not pushing 23 lbs

  4. #4
    4,850 for the Turbo System...you will need alot more Parts to run it, so you will end with around 10K Invest at the End.

  5. #5

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    Quote Originally Posted by BRP View Post
    4,850 for the Turbo System...you will need alot more Parts to run it, so you will end with around 10K Invest at the End.
    more lol

  6. #6
    connorrxp's Avatar
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    Not really.. if hes got stage 4 already all he would need is a tubro reflash and he has a cmd to tune fuel. I swapped my turbo out for a 137 +4 and all I changed was the tune

  7. #7

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    How many lbs are turbos doing I think with 23 lbs charger I wouldd be hitting 90 easy that is 6lbs above current adding 60hp which easily would put me at least 400+ hp

    And I would prob pitch to around 16/23 or 24. And easy push 90

    Or may go to the 161 ring and and get a 300 impeller

  8. #8

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    Quote Originally Posted by tomespo View Post
    more lol
    Yah he probably leave out covering everything in carbon fiber and re powder coating everything after every ride.


  9. #9

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    Quote Originally Posted by meinstein1987 View Post
    How many lbs are turbos doing I think with 23 lbs charger I wouldd be hitting 90 easy that is 6lbs above current adding 60hp which easily would put me at least 400+ hp

    And I would prob pitch to around 16/23 or 24. And easy push 90

    Or may go to the 161 ring and and get a 300 impeller
    Took about 34psi on a turbo tx with a garret 3071 gen2 with race gas to hit 94 and 8 reliefs. Takes about 22ish on a borg 7163 to go low 80s with two reliefs full tank of gas and > 200lb rider.

    Going 90 on an older TX hull is a death wish IMO.

    Can't really compare a charger to the many turbo combinations that are there, You can get turbos that flow a lot of air at lower boost but may spool slow or a turbo that spools like mad but takes a lot more boost to get the same HP. You have to pick something for your application. If you want the big power, the Gen 2 3071 and 3076 are real nice. I run the little 6758 borg and love the quick spool and still puts my PX in the mid 80s easy and accelerates like mad. If I was chasing low 90s I'd probably do the borg 7163 or garrett gen 2 3071. If I was like wanting to get crazy I'd do the gen 2 3076 after that I have no experience. Lot guys south florida run the Comp turbo's but I don't have much experience with them and they usually run external waste gates which is a plumbing nightmare.

    Takes a lot of juice to go from a low 80s ski to a 90mph ski plus you need a lot more power to overcome all the reliefs you are going to need.

  10. #10

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    I always wonder what is the ratio of working on your ski to riding it when you drop 10k and a huge turbo in it. Also how much of that riding is actually fun vs tuning, tweaking, breaking stuff. I support doing it, just wonder if it's really worth it.

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