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  1. #1
    Matrix 4-Tec spannerspencer's Avatar
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    thru hull exhaust outlet. can i use a oem gtx outlet?

    ok so im making my own thru hull exhaust. i would buy a riva if i have the £, plus i can quickly fab one up in work using a 135 deg and 45 deg stainless pipe welded together (copy riva shape)

    so i need a thru hull outlet tip. can anybody see a problem with me running a oem plastic outlet tip from a gtx 4 tec? P/N 274000843

    ill make the pipe from 63mm or 70mm stainless. the gtx outlet tip in about 63mm / 2.5" dia, and i will need to hole saw a 70mm hole (which i believe is same as a riva exhaust outlet -which should mean i can upgrade at a later stage?)

    i know i need to install the water union fitting near the outlet of the pipe i make.

    appreciate any input.


  2. #2
    monaroman76's Avatar
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    I couldn't see a problem with it besides it will look pretty sh*t. As far as I'm aware the water union near the exhaust exit is optional to supress noise. I did not use it on my rxpx.

  3. #3
    Matrix 4-Tec spannerspencer's Avatar
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    Quote Originally Posted by monaroman76 View Post
    I couldn't see a problem with it besides it will look pretty sh*t. As far as I'm aware the water union near the exhaust exit is optional to supress noise. I did not use it on my rxpx.
    ok so it wont look that special.

    ill not use the water union if its not "needed" ill copy the exhaust water system on gtx as they dont use it.

  4. #4
    i hate my bipolar disorder its great
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    do you want to wreck your jetski or make tasteful modifications? imo the riva tip looks great, really suits the back of the rxp

  5. #5
    mac_man_luke's Avatar
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    GTX outlet is not that bad? yea its not flash but not horrible?

  6. #6
    To much is never enough Badvgood's Avatar
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    thru hull exhaust outlet. can i use a oem gtx outlet?

    Maybe this as you are in the UK?

    http://www.ebay.co.uk/itm/seadoo-rea...-/140770466071

    I know it's £95 but it is nice!

  7. #7
    pete71's Avatar
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    Quote Originally Posted by Badvgood View Post
    Maybe this as you are in the UK?

    http://www.ebay.co.uk/itm/seadoo-rea...-/140770466071

    I know it's £95 but it is nice!
    That is a sexy piece

  8. #8
    Matrix 4-Tec spannerspencer's Avatar
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    Quote Originally Posted by pete71 View Post
    Quote Originally Posted by Badvgood View Post
    Maybe this as you are in the UK?

    http://www.ebay.co.uk/itm/seadoo-rea...-/140770466071

    I know it's £95 but it is nice!
    That is a sexy piece
    this is real local to me too, its just by the time ive payed out for that and exhaust material i may aswell get riva kit.!

  9. #9
    ou812's Avatar
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    Yes, You can use it.. BUT, if your exhaust get too hot for some reason it will melt the tip and you're done. I've used the OEM exit on several ski with success and it looks OEM too. Use the water sprayer at the exit to help cool the tip. I used the OEM exhaust hose too, you have to think it out and make 2 cuts and use 1 maybe 2 2.5" tubes to couple the pieces together or just get a riva rear exhaust tube. I'll see if I can scrape up some pics..
    Last edited by ou812; 12-13-2012 at 12:34 PM.

  10. #10
    ou812's Avatar
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    Oh, download the riva template for the cut out.

    page 7 and 8

    http://www.rivaracing.com/instructions/rs16082.pdf

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