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VS-MasterAngler

Hydro Tec Marine Performance???

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Hey Guys,

Has anyone ever heard of or put a Hydro Tec Marine- Phase I Kit on their Yamaha motor?

I Stumbled stumbled upon a post on Facebook and the guy was talking about having put one on his Yammi 150 vmax OX66 and his numbers seemed really good!

Any info would be appreciated, about reliability, performance, fuel economy, etc... I'm not worried about voiding a motor warranty as my motor is an 01 Yamaha Vmax OX66 with 70 hours.

The Kit on Hydro Tec's website is $1,236 and then I'm sure there would be a decent amount of labor to have it installed.

If this kit isn't worth it is there anything that can be done to an older carb 2 stroke, to up performance??

Thanks, Vinnie

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Don't know much about the actual real world gains, but Hydro-Tec has a great reputation in the performance world.  You will find prolly find more info on a bass boat forum or Scream and Fly.

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I Have used hydro tech for machine work many times. Used them way back when Nathan Worthy was there he ported one of my blocks . Wayne Worthy kind of took over when Nathan went away . I have not used them since I went to 4 strokes . Nathan and Wayne both would go out of there way to help answer all my questions . I am not sure who is running the show today . Have used there heads and reeds .  There phase l kit will increase your compression you will have to use a higher grade gas with the added compression. Your motor will respond to the throttle better . You should feel low end performance gains as soon as you hit the throttle , you will pick up some top end also. Ask Wayne what kind of performance gains you will get with this kit he will let you know what to expect. I would think a 3-4 mph top end is very possible . The heads will be your biggest bolt on performance gain . 

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9 hours ago, dabear said:

I Have used hydro tech for machine work many times. Used them way back when Nathan was there he ported one of my blocks .Have used there heads and reeds .  There phase l kit will increase your compression you will have to use a higher greade gas with the added compression. Your motor will respond to the throttle better . You should feel low end performance gains as soon as you hit the throttle , you will pick up some top end also. Ask Wayne what kind of performance gains you will get with this kit will let you know what to expect. I would think a 3-4 mph top end is very possible . The heads will be your biggest bolt on performance gain . 

This is pretty much spot on. 

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Thanks for the info guys. Are these kits something any Yamaha mechanic would be able to install for me?  Also would adding one of these kits put my motor at a greater risk of failure or are they pretty safe to add??

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Not a real tough install at all . Remove stock reeds and install HTs carbon fiber reeds , replace carb jets with jets that are a couple mm larger remove stock heads and install heads that have been shaved for a little higher compression .  The higher compression will put a little more strain on the power head short block than stock but with the carb jet size going up a little richer , and running a higher octaine gas it still should not lean out and remain fairly safe . Anytime you add more compression or alter OEM parts on any engine you may shorten the life. 

 

 

 

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12 hours ago, dabear said:

Not a real tough install at all . Remove stock reeds and install HTs carbon fiber reeds , replace carb jets with jets that are a couple mm larger remove stock heads and install heads that have been shaved for a little higher compression .  The higher compression will put a little more strain on the power head short block than stock but with the carb jet size going up a little richer , and running a higher octaine gas it still should not lean out and remain fairly safe . Anytime you add more compression or alter OEM parts on any engine you may shorten the life. 

 

 

 

Thank you!

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Year 5 or 6 on a new Powerhead with reeds, etc forget which phase kit on a Vmax OX66 150.  Its on a MA18 I believe it puts out over 180hp.  Based on the hole shot and performance I would hate to have to strap a 4 stroke on it one day.  Probably 500 plus hours since new powerhead. 

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