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Thread: Hydrotec Heads

  1. #1
    Team Member Roflhat's Avatar
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    Default Hydrotec Heads

    Anyone tried hydrotec heads? keen to hear results and what people think of them.
    Also anyone know if their 60/70hp head fits a CES? - http://www.shop.hydrotecmarine.com/p...5&categoryId=4

    Cheers

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    I esperate yes ...It my next purchase fot the next summer .... only exaust for this year !

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    Team Member LittleCharger's Avatar
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    Quote Originally Posted by Roflhat View Post
    Anyone tried hydrotec heads? keen to hear results and what people think of them.
    Also anyone know if their 60/70hp head fits a CES? - http://www.shop.hydrotecmarine.com/p...5&categoryId=4

    Cheers
    I was always under the impression that the hydrotec head was basically a CES head but I could be wrong

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    Team Member Roflhat's Avatar
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    Quote Originally Posted by LittleCharger View Post
    I was always under the impression that the hydrotec head was basically a CES head but I could be wrong
    That's what I was wondering, although the site says their head adds 7-10hp, which would make a standard 70 more powerful than a CES? I've sent them an email asking if it will fit the CES, no reply yet

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    Team Member Roflhat's Avatar
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    Anyone know about this?
    Does either the Hydrotec or Topgun head go well on the 70ces?

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    One of my customers has one on his Yamaha and it goes like stink!

    Jeff
    "We live at the bottom of an ocean of air." - General Marvage Slatington

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    FFX-61
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    the heads fit, the 70ces head runs a neg squish band, they ( the factory) run it fat out of the box. they all fit each other. a 70 ces is just a 70 with jacked exhaust and a cow bell tuna, you can make a copy of a 70ces from a 60hp. Hydrotec is stand up, if they say it works for 7-10hp, it will.

    Part one of "Secrets of the OMC Mod 50" : http://www.boatracingfacts.com/forums/showthread.php?t=2052

  8. #8
    FFX-61
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    stock 70ces makes 70 hp right about 64-6500 rpm. the crank is the weak link

    Part one of "Secrets of the OMC Mod 50" : http://www.boatracingfacts.com/forums/showthread.php?t=2052

  9. #9
    Team Member Roflhat's Avatar
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    Cool thanks Fred,
    I plan on welding the crank over the winter. I saw photos of a head that had been machined so it has positive squish, not been tested yet but I'm keen to hear how it goes.

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