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  1. #1

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    Cool turbo for a PWC

    Check this out:

    http://cgi.ebay.com/ebaymotors/VOLVO...4506.m20.l1116

    The exhaust housing is water-jacketed. I looked up the engine it is OEM for and it's rated at 420 hp. Not bad...

    The only problems are:
    a) It has no internal wastegate, so an external one would be needed.
    b) The turbine housing is cast iron. So, running river or salt water through it would cause corrosion. There is the possibility of running it in the close loop cooling system, but I'd bet it would add too much heat and overheat the water.

    Mike


  2. #2
    ADSR's Avatar
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    I like it alot. For a lake machine, that's the money shot right there.

    You'd have to flush the shit out of it if used in salt water, but i'm sure it would be fine. Pretty thick casting i'm sure.

  3. #3
    ADSR's Avatar
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    Hmmm... now that i think of it tho... it's a diesel turbo. It's going to top out at like 3000rpm.

  4. #4

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    No, no... it'll supply enough air flow for 420++ hp. Whether it's a 1.5 liter engine turning 8100 rpm, or an 8.0 liter engine turning 2000 rpm doesn't matter to it.

    Also, I'm sure the casting is very thick, but I wonder if a coating like ceramic would work well to protect it.

    Another option would be a 2nd closed loop system with a heat exchanger, this one cooled by the water leaving the exhaust manifold. It gets to be a lot of hoses though...

  5. #5
    ADSR's Avatar
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    I don't know if you'd need a coating. I've seen lots of jacketed cast iron log style manifolds on inboards last for 20+ years. I'm sure Volvo knows that turbo is going to see a boat load of salt in it's lifetime.

    I'd love to know if this works. It would get rid of a lot of heat inside the hull.

  6. #6

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    Quote Originally Posted by ADSR View Post
    ...I've seen lots of jacketed cast iron log style manifolds on inboards last for 20+ years.
    I could be wrong, but I thought those were aluminum.

  7. #7
    Ride Hard! aha's Avatar
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    Mike how hard would it be to just have something machined to match that?

  8. #8
    Hydrotoys's Avatar
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    "marine diesel turbo?"

    Wouldn't it be designed for salt water?

  9. #9
    Whats that whistling noise? jtskier11's Avatar
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    Quote Originally Posted by Hydrotoys View Post
    "marine diesel turbo?"

    Wouldn't it be designed for salt water?
    Prolly set up for closed loop I bet. Ya suppose the coolant hose routing on the 4-Tec could be altered to pass through that turbo?? Or do you think that the increase in coolant temp from the turbo would make the rideplate ineffective as a "radiator?"

  10. #10
    ADSR's Avatar
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    Quote Originally Posted by engineermike View Post
    I could be wrong, but I thought those were aluminum.
    Some are, but most aren't. Aluminum is much more costly. My bros iron 302 ford ones are 20+ years

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