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  1. #1
    SpeedJunky's Avatar
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    05 cylinderhead question.

    Hello all,
    First post but long time reader.
    I am modding my ski over the winter season. I am confused on whether I should mod my oem head or go with an aftermarket. I see R&D offer variable chamber heads and Riva offers fixed compressions. Whats everyone running and all opinions would be appreciated.


  2. #2
    Happily Self-Employed WFO's Avatar
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    Welcome Junky!!!

    RnD head is the way to go.

  3. #3
    ABBOTT's Avatar
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    We welcome all Junk. Just kidding, welcome aboard!!

  4. #4
    Hydrotoys's Avatar
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    Welcome Junky.

  5. #5
    Mongoose's Avatar
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    Something everybody should be aware of. It has been mentioned before, but, if you ride in salt water changing the heads from oem means you loose your sacrificial anodes. On the 1300's these anodes are in the heads, but on the 1200 they are in the cylinder water jacket.

  6. #6
    Johnjet's Avatar
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    Quote Originally Posted by Mongoose
    Something everybody should be aware of. It has been mentioned before, but, if you ride in salt water changing the heads from oem means you loose your sacrificial anodes. On the 1300's these anodes are in the heads, but on the 1200 they are in the cylinder water jacket.


    ride salt all the time don't flush much last time pulled engine down seemed pretty clean

  7. #7
    SpeedJunky's Avatar
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    I ride in freshwater only so no problem with the anode issue.
    I am going to go with a stock milled head. Should give me equal performance with no alignment or surprise issues.
    Thanks again.

  8. #8
    Hydrotoys's Avatar
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    SpeedJunkie,
    I'd advise you call Lowell Horning and talk to him about that head of yours. The 1300 head has a staggered compression domes. He can cut it.

    About the anodes: If you cut the heads, there is a good chance the anodes will no longer fit.

  9. #9
    Mongoose's Avatar
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    Anodes are not there to stop salt build up when you flush, they won't help at all there. They are there to corrode instead of your engine corroding owing to dissimlar metals being present. You won't necesseraly see the corrosion or breakdown looking in the water jackets when the head is off, It could be anywhere! NOT a big problem, but just something to be aware of.
    The water jackets on my bowrider are really clean, as it is flushed after every use, but the leg has some ali rotting cause the guy who had it before me let the anodes go past their usefull life.

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