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Thread: 218 WAC engine height and prop

  1. #1
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    218 WAC engine height and prop

    Hi, just need some help please.
    I have a 2004 218wac with a 225hp Yamaha 4 stroke on the back.
    Just curious as to the best engine height and propeller size for this combo.
    I read on THT a thread that a guy was selling one had a jacking plate to get the engine high enough.
    Thanks Herbie

  2. #2
    Senior Member Fish'nFool's Avatar
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    Read this post from Ken at PropGods. Very good information regarding engine height.

    http://www.veradoclub.com/index.php?topic=65.0


    What makes you think your current propeller is not sufficient?
    Chris

    2010 2660CC

    2008 218CC / F150 - SOLD

    http://i392.photobucket.com/albums/p...fish200021.jpg

  3. #3
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    Quote Originally Posted by Fish'nFool View Post
    Read this post from Ken at PropGods. Very good information regarding engine height.

    http://www.veradoclub.com/index.php?topic=65.0


    What makes you think your current propeller is not sufficient?

    The boat had a 150hp prior and i upgraded to a 225hp.
    The prop is a 15 x 17p and its revving to 6100+ fully loaded and only getting 21knots @ 4000rpm.
    Would be good to hear from someone who has the same boat setup.
    The engine may need to go up another hole too.
    There is a bulletin :
    http://yamahaoutboards.com/sites/def...A-F225TXRC.pdf

  4. #4
    Senior Member Team Ruby's Avatar
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    Please note that the Yamaha Performance Bulletin gives the speed in MPH and you're using knots. When you convert 21 knots to mph you're slightly over 24 mph.

  5. #5
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    Quote Originally Posted by Team Ruby View Post
    Please note that the Yamaha Performance Bulletin gives the speed in MPH and you're using knots. When you convert 21 knots to mph you're slightly over 24 mph.
    Yeah i know but it definately lacked performance when top speed was about 32 knots.
    the motor is still a touch buried too.

  6. #6
    Senior Member Fish'nFool's Avatar
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    Nobody on here that I know of has this set up.

    Looks like you took the prop off the 150 and put it on the 225. You should probably be spinning a 21.

    Go to Prop God's website/forum and Ken will advise on what size prop you should be looking at.
    Chris

    2010 2660CC

    2008 218CC / F150 - SOLD

    http://i392.photobucket.com/albums/p...fish200021.jpg

  7. #7
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    Quote Originally Posted by Fish'nFool View Post
    Nobody on here that I know of has this set up.

    Looks like you took the prop off the 150 and put it on the 225. You should probably be spinning a 21.

    Go to Prop God's website/forum and Ken will advise on what size prop you should be looking at.
    Hi Chris,
    The 150hp had a 17p solas 4 blade.
    I am going to try a Yamaha 19p and also a Merc Mirage plus 19p too.
    Most times i fish i am loaded so will prop for that.
    I will email Ken once i have ran it with the 19p and see what he recommends
    Thanks everyone for your help this far.

  8. #8
    Senior Member vwfam2000's Avatar
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    I struggled to make that 218WAC to act accordingly with at V6 heavy 4-stroke. Now that they have the I4 200. That would be perfect for that boat. You really need to get as much weight away from that transom as you can. battery relocation etc... I am the one that added the jack plate. Boat just never ran the way I hoped it would.
    2004 218WA / 2007 Yamaha F250 *SOLD*
    2006 2360CC / 2016 Zuke DF200's

  9. #9
    Senior Member vwfam2000's Avatar
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    I struggled to make that 218WAC to act accordingly with at V6 heavy 4-stroke. Now that they have the I4 200. That would be perfect for that boat. You really need to get as much weight away from that transom as you can. battery relocation etc... I am the one that added the jack plate. Boat just never ran the way I hoped it would.

    Ken is the one that helped me to prop this setup as well. Super helpful guy
    2004 218WA / 2007 Yamaha F250 *SOLD*
    2006 2360CC / 2016 Zuke DF200's

  10. #10
    Senior Member optimist's Avatar
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    I didn't think the 2004 218 was rated for 225 ? I also have a 2004 218 ( CC, not the WAC ) , and I seem to remember that the sales rep told me my 218 was only rated for 200 at the time. Maybe the WAC was rated higher.....
    Also, are you up to speed on the issue Yamaha had with the 225 from that time period ? If you are not, you need to check into it asap, or else you could have some serious mechanical issues coming up. My buddy has a 2003 Sailfish with the 225 , and was not aware of the problem until it was too late- very expensive repairs needed. I think it was only the 225's from 2003-2005 , but am not positive about that....lots written on THT on it....

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