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Old 06 February 2009, 11:54   #1
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Wildthing,Is there a prize for having the weardest rib

Has anyone seen one or owned one.Its was made in america 1998 and is 3 metres .It has a marine/mercury jet drive unit
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Old 06 February 2009, 14:34   #2
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Has anyone seen one or owned one.Its was made in america 1998 and is 3 metres .It has a marine/mercury jet drive unit
There was one on Ebay a bit back, but could be the same one. Looks like it could be a good summer fun day out.
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Old 06 February 2009, 15:37   #3
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There's some footage on Youtube of them with an outboard. Looks like a laugh-I guess the seethrough bottom is so you can see where you're going?

[YOUTUBE]nN0XD6aqoUk[/YOUTUBE]
[YOUTUBE]i_oarN4yNvc[/YOUTUBE]
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Old 06 February 2009, 17:48   #4
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Will those size tubes support a 250
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Old 07 February 2009, 01:50   #5
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Will those size tubes support a 250
Suprisingly i have decided to reinforce the transom and have calculated it will happily take the new 300hp It was the one on ebay and it really wasnt described as good as it could have been the jet drive is a great electric start unit with manual as well
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Old 07 February 2009, 03:39   #6
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Saw one at a local yard - looked abit 'odd' with an OB on it - much better with a jet , but why not buy a jetski ?
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Old 07 February 2009, 06:06   #7
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Suprisingly i have decided to reinforce the transom and have calculated it will happily take the new 300hp It was the one on ebay and it really wasnt described as good as it could have been the jet drive is a great electric start unit with manual as well
Thought it was, looks good fun. Gis a go?
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Old 07 February 2009, 10:26   #8
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Saw one at a local yard - looked abit 'odd' with an OB on it - much better with a jet , but why not buy a jetski ?
Several reasons I dont like them there boring and most water users have a great dislike to them and those that use them.It looks ideal to take on holiday to go round little coves and because of the small engine i think responsible child could use it 15 hp.Of course there are users of jetski,s that are considerate and thoughtfull but i havent had the pleasure of meeting one yet have you.The children can sea under water.I may even take the jet off(depends how good it is )Which will mean two people can easily lift it onto a roof rack.And use it with transom wheels and small outboard.
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Old 07 February 2009, 11:07   #9
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All fair points - I was a 'nice' jetski owner till I saw the light & got RIBed . I even towed broken down/ grounded yachts
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Old 08 February 2009, 02:12   #10
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Anyone know how to identify the engine unit

Has anyone worked on an engine the same as this or know anything about them
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Old 08 February 2009, 03:45   #11
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Looks like a 15hp mercury outboard powerhead. Same concept as these: http://www.mercurymarine.com/engines...jet-drives.php
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Old 08 February 2009, 03:58   #12
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If it is a 15hp I,d imagine it should go reasonaly well.The impellar is a very tight fit and scrapes and am at a loss as to how to fix it.Anyone know anything about water jet impellars or is this normal for it to rub/scrape metal to metal as the tolerance is very small to get a good fit ?
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Old 08 February 2009, 06:33   #13
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Hi peter from experiance after I had truly destroyed 2 impellors with stones I think they should be a very very close fit, but not touching. Thats why they cost me so much to replace. On the modern jetskis there is a 'wear ring' built in . Basically it means that when the impellor spins less than perfectly you wear away a £50 part & not a £300 impellor or even more expensive tunnel.

Possibly the bearings are stuffed on the shaft meaning its not turning centrally ?

Any intolerance in the gap means the pump runs very inefficiently - this was seen on a mates Jet drive boat that was a 'cheap deal' until he had to get the whole lot machined up to tolerance.

I'm sure there will be more knowledge on here soon.
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Old 08 February 2009, 12:39   #14
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It does need further investigation i know before i try it out so hopefully someone will help with info.I am happy as i bought it knowing it had this problem as i noticed it and he happily dropped the original price by £130 I realise it may cost more(although the impeelar looks ok to my eye) to fix but will end up with a fun little unit .I can remove the nut that hold the impellar on and do have some pullers but not one i think that will fit.
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Old 09 February 2009, 14:28   #15
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looking at the intake grilles damage it's obviously had a lot ofstugg go through it. big or hard enough stuff to bend the grile? that would take bits off the umpeelor tayher than add to it, Theres not something stuck in the wear ring ?
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