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  1. #1

    4 TEC muffler mod

    Like to know if anyone has tried to mod a stock 215 waterbox w/ a straight pipe out the rear of the waterbox instead of using a hump out the top .The gibson runs straigt through.Just thought it would make pluming a rear exhaust less of a hassle


  2. #2
    Moderator Snoman's Avatar
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    I think Jammer1 has..

  3. #3
    speedskixp's Avatar
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    Even with the gibson it is prone to getting water in the engine when sitting. Especialy if you have any weight on the back of the ski. Trust me. Its not a good idea.

  4. #4
    Moderator Snoman's Avatar
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    The J-Pipe should keep the water out of the exhaust/engine shouldnt it???The problem i see with these setups is like you were saying, they fill up with water,full of water which could make for hard starts.Plus all the added weight till it gets blown out...JMO though... I agree..Not a good idea..

  5. #5
    speedskixp's Avatar
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    Quote Originally Posted by Snoman View Post
    The J-Pipe should keep the water out of the exhaust/engine shouldnt it???The problem i see with these setups is like you were saying, they fill up with water,full of water which could make for hard starts.Plus all the added weight till it gets blown out...JMO though
    You would think that the j-pipe would keep it out but it does'nt. Once the muffler fills up with water it can make it hard to star like you mentioned but also if the exaust is full it does'nt take much movement (pressure)to push the water forward. When I had my gibson I was on the beach un hooking my 02 sensor from the top of the j-pipe and every little ripple or wave would send water splashing out the bung at the top of the j-pipe. Also i had a couple occasions where I was siting on the rear of the ski while parked and after that it would not start and once it did it spit and sputtered until it cleared the water out.

  6. #6
    So run the pipe out the top. No problem just wanting to make routing easier.Next question? drop the pipe down into waterbox or leave it flush w/ top ?

  7. #7

    4 tec waterbox mod

    Ok run pipe out the top,no problem just wanted to make a cleaner instsall.
    when runing the elbow out the top has anyone found a differance in the distance you put the pipe into the waterbox ?

  8. #8
    speedskixp's Avatar
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    Quote Originally Posted by Del's Watercraft View Post
    Ok run pipe out the top,no problem just wanted to make a cleaner instsall.
    when runing the elbow out the top has anyone found a differance in the distance you put the pipe into the waterbox ?
    If you are refering to the outlet. It doesnt go into the box at all.

  9. #9
    Thanks - Time to fire up the tig

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