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Thread: C-500 horsepower rating

  1. #1
    boatguy222
    I would like to know how much horsepower you can put behind a c-500 and get it to live. I have a 20' Schiada, and am up grading to a 500ci whipple quad engine, it maybe as much as 1200hp if stepped on.
    Anyone run this kinda of hp and keep the v-drive together? or should I go to a split case?
    Thanks,
    Marc

  2. #2
    schiada96
    BG222 my friend ran about 1000 thru one. He had problems with the thing trying to turn. we made braces to stop that. I say he used to run one until he broke an ear of a prop. It tore the whole bottom of the boat up.

  3. #3
    boatguy222
    96,
    I plan on bracing mine to the stringers, like most split case braces are, I guess I'am more interested in if the v-drive it self, is going to be a problem? I have heard that the upper shaft well fail with any thing over about 800hp. ever heard of that happening? or any other problems with them at the hp level that I hope to run?
    Thanks

  4. #4
    schiada96
    222 I'm like you are I don't know I wish I was more help. I know those things are expensive to change gears in. Do it a couple of times and you could have a split case.

  5. #5
    boatguy222
    96,
    Thats a good point, I have a split case, and I am sure it will do the job, the c-500 is nice and quiet, and I believe I can pull a little taller gears in it (50%) without loosing the water jacket, but the question is will it hold the power, I really only want to do this re rig once if I have to, I was hoping that some one could tell me yes, it will work, or know it won't.
    thanks, again for your insite

  6. #6
    schiada96
    I wish they would change the stupid sad smiley face thing

  7. #7
    boatguy222
    ya, it sucks

  8. #8
    VD CRUISER
    A friend of mine had a C-500 in a 21' Connelly with a blown 496 ci motor, don't know the HP but it ran 100 mph and he never had any problems. How about checking with Casale ?

  9. #9
    Dans76Schiada
    I have a C-500 in my Schiada. From expirence I would pull the box apart and check the bearings. Its no fun to be running wide open and have the two bearings on the input shaft lock up. It stopped my motor dead...
    Unless you know for sure its in goood shape Id just pull it apart to make sure.

  10. #10
    V-Drive Tom
    BG222
    If the gear box feels good and smooth now,Brace it,put good synthic oil in it,it should work fine. BE CERTAIN that the water jacket is clear and flows good.C500 v-drive needs good water flow. Hope you are picking up cold water for it.(not from engine or oil cooler) The split case will work fine but not without a top shaft change.(stock ones are SOFT) http://free.***boat.net/ubb/biggrin.gif

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