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Vulture setup

Have questions about setting up your boat? Engine height, setback, prop, etc.
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77viper
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Re: Vulture setup

Post by 77viper » Aug 08, 2010 4:38 pm

I don't think you will see a dramatic increase in speed being it's not too far off now. But with a combination of things you will hit 80.
What rpm's are you seeing with your props?
A cheap hp increase is in cutting your heads to 35cc and bumping timing up to 25 degrees, you will need to run fresh 91 octane gas.
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Chet Olson

75 viper 2.4 200, 130 shot of NOS
91 vegas loaned out
79 vking project 2.5 280

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sixcylrunabout
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Re: Vulture setup

Post by sixcylrunabout » Aug 08, 2010 10:45 pm

Right now with the 24 Trophy I am turning 6800-6900. The results have varied some with the other props. The 26 re3 was turning 6500 or so. 6800 with one Yamaha drag in a 24" 7200 with another. But mostly I just lose topend with all the other props I have tried. I gain lots of bottom end but I am not drag racing, just looking for that elusive larger number. Thanks, Dwayne.

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sixcylrunabout
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Re: Vulture setup

Post by sixcylrunabout » Aug 14, 2010 5:59 pm

I got my 6" set back plates installed between the transom and hydraulic plate. Going to stop tomorrow on the way to the river and level boat and propshaft so I can adjust my height. Hopefully it help the boat free up and run a little better. I should have something to post in a day or two on the outcome of the longer offset. Dwayne.

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Hippie459MN
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Re: Vulture setup

Post by Hippie459MN » Aug 14, 2010 6:43 pm

Can't wait to hear how it goes. :)

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-Kevin
Project Vulture | Project Vector | Project Vamp
The Vulture Wish List | Project CobraJet

1977 HydroStream Vulture - Worlds longest ongoing project. :eek:
1982 Hydrostream Vector
1982 Hydrostream Vamp
1976 CobraJet Jet Boat - Outboard conversion project
199? Glastron - aka Boat Anchor
1976 Pontoon - aka The Family Truckster

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sixcylrunabout
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Re: Vulture setup

Post by sixcylrunabout » Aug 15, 2010 8:55 pm

Well, I made it to the river today and did a little testing. The extensions didn't increase my speed yet, but did make the boat drive better. Now to more or less start over with props and setup.

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RSWORDS
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Re: Vulture setup

Post by RSWORDS » Mar 13, 2017 12:19 pm

Bumping this up. What did you end up doing for setup and prop?

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Jhuff83
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Re: Vulture setup

Post by Jhuff83 » Jun 16, 2017 9:26 am

Hey everyone, figure ill add to this thread instead of starting a new one, I just sold my viper this past weekend and picked up a Vulture (I'd like to see my 40's). Took the boat out and it drives like a dream compared to "the death trap" as my friends liked to call it. The boat has a 77' 200 johnson on it right now and plan to keep it for a few years and build up a nice 2.5 for it. In the meantime I'd like to get everything I can out of what I have. I would like to get the motor moved back before I start messing with height and prop combos but not sure where to start. I have read everything from 6" to 12+"' for these boats. Just looking for a place to start. Any advice would be greatly appreciated. Thanks.

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RSWORDS
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Re: Vulture setup

Post by RSWORDS » Jun 16, 2017 12:24 pm

10" minimum is what I've found in all my research

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