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  1. #1

    waterbox mods for a super charged 15F?

    what water box mods are people doing to there super charged 15f's
    besides getting rid of the normal muffler system
    has any one gutted there water box completely ?
    does any one know what the big named guys are doing

    also does any one know what the gates part number is for the belt that riva use on there super charger kits


  2. #2
    Gates Power Grip GT-2 #1085MC for your charger belt.

    Water box is best opened and plate remover between the front and rear entry. Still it would do just fine with a straight pipe. You could also call Chris at Macc Racing. Buy a exhuast from him.

  3. #3

    Thumbs up

    maccracing is the best person to do that work.
    Quote Originally Posted by doodle View Post
    what water box mods are people doing to there super charged 15f's
    besides getting rid of the normal muffler system
    has any one gutted there water box completely ?
    does any one know what the big named guys are doing

    also does any one know what the gates part number is for the belt that riva use on there super charger kits

  4. #4
    thanks skips for the part number
    i would prefer to do the mod my self as i have a tig and all the gear to do it

    do you mean remove the big flat plate that holds the two baffle tubes in place that is welded to the main wall of the box ?

  5. #5
    Look in the Riva Free Flow Instalation instructions. You will see how to alter the Water box for a free flow. Make that puppy look like swiss cheese my friend. Still your better doing the straight pipe from Mac or contact TJ. I have both of those numbers if ya need it.

    Illustration 18.

  6. #6
    so skip with the belt what is the width i gave the gates guy the number and he said that where there is a "C" there should be another number wich tells them the width of the belt

    so does macc and TJ just remove the water box all together and just run a straight pipe ? if so do they put a s bend type thing inthere to stop water going back up into the engine when it is not running?

    or do they weld a straight pipe in the water box some where

    i was thinking of just gutting the water box all toghter and relocating the outlet of the box so instead of facing up it pointed out the back and lined up with the ehust outlet out the back of the hull


    also how much more boost can you put through a riva speced super charger using the riva computer ?
    Last edited by doodle; 10-30-2007 at 11:22 PM.

  7. #7
    OOPS my bad.
    Try #8808MGT30 should be around $40

    If he cant find it then give them the UPC# 0 72053 55521 9

    I can measure it for you if needed.


    Pic is of a Moded waterbox.
    Feel Free to contact Macc hes a nice guy that will talk with ya. TJ will be too busy to answer his phone, best to email him.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  8. #8
    thanks for that
    so it looks like you just cut a big enough hole in the water box so you can pull all the useless stuff out of it.

  9. #9
    so as my boat is on its way to me i want to have stuff ready for when it gets here
    so can some one tell me the O.D on the water box inlet and outlet pipe so that i can make up a stainless staight through pipe to bi pass the water box all toghter?
    i will also be trying the origonal water box completley gutted also.

  10. #10
    skips you out there brother ?

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