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 29 Kawi on 1754 Grizzly Tracker Question 
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Post 29 Kawi on 1754 Grizzly Tracker Question
Need some help guys...We have a 29 hp EFI Kawasaki Longtail on a 1754 Tracker Grizzly. Seems that the boat has gotten slower over the last year. GPS this morning was at 8 mph with motor running at 3000 rpm full throttle. Three guys, dog and dekes. The boat does have a 3/4" treated floor and a low profile truck box in it. We just changed oil, filters, plugs, new throttle cable a few days ago and reset the low end rpm to 1600 and high end to 3900 out of the water. The engine sounds like a sewing machine at full song in and out of the water. Prop and shaft were brand new last season. Motor has 110 hours on it. Shouldn't we atleast see 15mph from this set-up or is this just simply an out of date, overweight set up?. What RPM's should we be seeing in the water?

Any thoughts greatly appreciated.

I think its time for a new Excel F4 with surface drive!


Sat Dec 11, 2010 3:18 pm
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Post Re: 29 Kawi on 1754 Grizzly Tracker Question
what about hooks in the hull?

You can also wear out a prop in no time on a hard-sandy bottom.

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Sat Dec 11, 2010 3:58 pm
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Post Re: 29 Kawi on 1754 Grizzly Tracker Question
no hooks in the hull. Dented up some from the previous owner though. Prop is one year old and has a few small nicks but nothing out of the ordinary. Our river is mud and large gravel and we baby the prop. We have an add on prop guard that also helps from hitting things. At 7mph anything we do hit is not that hard...lol.


Sat Dec 11, 2010 4:12 pm
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Post Re: 29 Kawi on 1754 Grizzly Tracker Question
any little dings can hurt perfomance more than you think.

What speeds were you gettin with that load last year?

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Sat Dec 11, 2010 6:09 pm
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Post Re: 29 Kawi on 1754 Grizzly Tracker Question
unfortunately I never put a gps on it until this morning but if I had to guess with the same load and same dents and dings around 15 mph. We are lucky to get it on plane and it is pushing a big wake behind. In the back we have one battery and a 6 gallon tank. We have both riders and dog on the bow to add front end weight. I've tried everything I can think of and nothing is helping. Is it normal to lose 1000 rpm from out of the water to in the water?


Sat Dec 11, 2010 9:43 pm
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Post Re: 29 Kawi on 1754 Grizzly Tracker Question
NO, i run mine out the water, and hit 3,600 in water is 3,550 and can get 14 with three people in a 20 hp.

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Sat Dec 11, 2010 11:11 pm
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Post Re: 29 Kawi on 1754 Grizzly Tracker Question
sounds like the prop is worn out have you measured it when they loose about an inch from original dimension there shot


Sun Dec 12, 2010 12:46 am
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Post Re: 29 Kawi on 1754 Grizzly Tracker Question
mine is a inch off right now and runs great actually better then when it was brand new

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Sun Dec 12, 2010 9:24 pm
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Post Re: 29 Kawi on 1754 Grizzly Tracker Question
then you are at sweet spot with the prop all goes downhill from their


Sun Dec 12, 2010 9:39 pm
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Post Re: 29 Kawi on 1754 Grizzly Tracker Question
mississippiduckboy wrote:
mine is a inch off right now and runs great actually better then when it was brand new


Its turnin more rpm's and doesnt have a big load to shove.
Has all your cup on the leading edge gone?

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Sun Dec 12, 2010 9:41 pm
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Post Re: 29 Kawi on 1754 Grizzly Tracker Question
O yeah long gone guy i got the motor from had it recupped like 10 hours ago

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Sun Dec 12, 2010 9:57 pm
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Post Re: 29 Kawi on 1754 Grizzly Tracker Question
You can get replacement props from backwaterinc.com for $160 ive got one on my 25hp GDLT and am impressed price and performance.


Mon Dec 13, 2010 10:35 am
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Post Re: 29 Kawi on 1754 Grizzly Tracker Question
You rpm's would go up if you had considerable prop wear. I think you are having engine issues.

If your boat has flotation check and see if it has become waterlogged. You might have a leak and not even know it.

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Tue Dec 14, 2010 9:46 am
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Post Re: 29 Kawi on 1754 Grizzly Tracker Question
Checked compression today and both cylinders are hitting at 100 psi. Measured prop and it is at 9" x 6". Mudbuddy said it should be 9" x 7". Would the 1" make me lose 900 rpm under a load? Going to rip the floor out this weekend and see if the foam under the plywood is holding water.

Any other ideas/ thoughts?


Wed Dec 15, 2010 6:56 pm
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Post Re: 29 Kawi on 1754 Grizzly Tracker Question
less prop= higer rpm's

I bet your foam is waterlogged, or you may just have a heavy a$$ boat.

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Thu Dec 16, 2010 1:04 pm
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