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Wooldridge xl pro 16'

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Wooldridge xl pro 16'

Postby Dummytm8 » Sun Jul 07, 2019 7:45 pm

I just bought a 1989 wooldridge pro xl 16' from Washington and brought it to Montana with 2 guys and some gear it will get up on plane but if I put 1 more guy in it will not get up on plane it has A Yamaha 115 jet drive 2 stroke motor on it and the rpm is at 5500 I pulled the impeller and it looks good. Anyone have any suggestions? Thanks
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Re: Wooldridge xl pro 16'

Postby patrick1967 » Wed Jul 17, 2019 7:04 pm

how about the liner?? clearance between the liner and the impeller. and of course it could have heavy waterlogged foam. there are many threads on this subject if you run a search. tell us what you found
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Re: Wooldridge xl pro 16'

Postby steelheadfreak » Thu Jul 18, 2019 11:26 am

If you are pulling 5500 with a 115/80 on a 16' boat and cant get on step with 3 guys, Id say your imp is not shimmed right. Do a youtube search on shimming an outboard jet. Lots of info. As mentioned above, pull your floor boards and see if the flotation is soaked. You could easily add hundreds of pounds with wet waterlogged foam.
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Re: Wooldridge xl pro 16'

Postby Dummytm8 » Tue Aug 06, 2019 8:20 pm

I pulled the floor and removed the foam and checked the impeller clearance and it still the same. I took it to lower elevation and it runs better. Does anyone know anything about jetting the carburetors?
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Re: Wooldridge xl pro 16'

Postby steelheadfreak » Wed Aug 07, 2019 9:33 am

Post some pics of this boat and motor. Might help.
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Re: Wooldridge xl pro 16'

Postby MT sauger skiff » Wed Aug 07, 2019 7:25 pm

.002 less for about 100 rpm.

Your elevation, color of plugs, compression?

Reverse gate locked up in F, nozzle clear, part number for impeller?

As stated, pics including hull
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Re: Wooldridge xl pro 16'

Postby steelheadfreak » Thu Aug 08, 2019 9:54 am

MT sauger skiff wrote:.002 less for about 100 rpm.

Your elevation, color of plugs, compression?

Reverse gate locked up in F, nozzle clear, part number for impeller?

As stated, pics including hull


I once saw a shoe on backwards and guy couldnt figure out why getting on step was hard. Pics say a thousand words. Post them
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Re: Wooldridge xl pro 16'

Postby Dummytm8 » Thu Aug 08, 2019 6:03 pm

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Re: Wooldridge xl pro 16'

Postby Dummytm8 » Thu Aug 08, 2019 6:06 pm

I live at 5500' and we took it to 3000' and the plugs look great is there some form of dial a jet that I could install when I come back to my elevation? It has a 494 liner and all I can find on the impeller is a C
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Re: Wooldridge xl pro 16'

Postby MT sauger skiff » Fri Aug 09, 2019 2:31 pm

Kicker, cooler and a third dude?
1960 MT Roughneck with 150 hp Johnson jet
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Re: Wooldridge xl pro 16'

Postby MPR » Sun Aug 11, 2019 1:32 pm

The Yamaha 115 2stroke should be running a D impeller as it comes from factory, the C impeller is for 90hp and the old inline 6 mercs. C has even less pitch then a standard 7 3/8” which would still be better then what you have now.
Try a D impeller, you will have a much better holeshot and less rpm.
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Re: Wooldridge xl pro 16'

Postby Dummytm8 » Tue Aug 13, 2019 8:57 pm

Thanks for your help I found it outboard jets website and it says it came with a 3 blade should I go back to that in a D?
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Re: Wooldridge xl pro 16'

Postby Crawdad Johnny » Wed Aug 14, 2019 8:07 am

I fear that eventually, you will want/need a 150hp/105 jet. Your hull lacks the power it needs to haul the people and gear you are bringing with you. At one time, I had a 16.5ft Hewescraft River Runner with a 4 cylinder Mercury 2-stroke 115/80 jet. It was fine with 2 guys and a light load of cargo (small cooler, lunch, and some fly fishing gear). It felt great, would jump up on plane quickly, and would top out at about 32 mph. Adding a 3rd guy (adult male with his fishing gear, lunch, etc.) changed everything. The boat would still plane but it took two to three times as long to get on plane; it also felt much less nimble and responsive. I wouldn't have wanted to tackle any challenging or difficult water with 3 guys in the boat - and this was with little gear, no dog, no large coolers, etc. I also had a neighbor who ran a Wooldridge Alaskan (17 ft) with a 115/80 Yamaha 4-stroke with jet. He and his wife are large people - not huge but larger than average. He also had a bowmount electric and the battery to run that. With him, his wife, the dog (75 lbs), and a cooler, that boat was a dog when it came to performance. He changed impellers and fussed with it for a couple of years and finally sold it. It just wasn't enough hull/engine to deliver the performance he wanted given what he wanted to carry. I hate to say it, but I think you're under powered for the load you're trying to haul. If true, your boat needs to go on a diet (get rid of all unnecessary weight and travel lighter) or it needs more HP. BTW, I live and do most of my boating at 4,000 ft elevation so your mileage may vary. Just respectfully giving my opinion. Hope it works out for you.
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Re: Wooldridge xl pro 16'

Postby steelheadfreak » Wed Aug 14, 2019 9:14 am

I run a 2017 Wooldridge Alaskan XL with a 4S 115/80. Tons of power in any river condition with 2 guys and a light load. I add a 3rd guy and although a hair more power is needed for the same performance, it does well. That said, if I was routinely running with 3, I would up my power to 150/105. But only to bring my RPMs down a bit. If the bigger motor was not in the budget, I have no quams running the 115/80. I think as mentioned above, the correct imp needs to be in place. There is no reason, provided your hull is clean and the powerhead is in good condition that that should be plenty of power for 3 guys. My old 1998 Alaskan with a 115/80 2S would pack 4 guys around without issue so don't see any reason why you should need to up power at this stage of the game.
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