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11-24-2017, 10:49 AM #1
5000 RPM
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Allison GS setup set back hgt. prop ?
New to me Allison GS putting 15" carb 200 merc. any set up help would be appreciated, thanks Randy
13 ft allison 75 omc
14 ft Allison
15 ft allison molds
17 ft tin fisher-marine 3cyl. omc
17' Allison ski boat
Grand Sport w/etec
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11-25-2017, 08:49 PM #2
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Try the Allison owners board
i have 8" setback on my SS2000. I would think 8-12 would suit you. I start 1/2" below the pad and hit the up button cautiously until I get minimal increase in speed.
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11-27-2017, 09:53 PM #3
5000 RPM
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Nice! Same colors as mine. My GSE has 10" of setback with a 2006 200XS with 1.75 sportmaster. For props I run a 24" Hydromotive Quad IV-X O/T for general boating and watersports and a 26" Hydromotive Quad IV-OT for when I want some more speed. Think I am conservatively set up around 1/2 below the pad.
Last edited by mxz; 11-27-2017 at 09:58 PM.
1996 Allison GSE /200XS
1977 Hydrostream Ventura / 150 Mariner MAG III
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11-28-2017, 08:33 PM #4
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If you have money for new, Hydromotive know Allisons and can tune the prop for your boat. For general use I've had good luck with used Trophies.
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12-05-2017, 04:05 PM #5
Screaming And Flying!
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How much setback is on there now? Looks pretty big. What gearcase? Coned 200? At 10"-12", 1/2" below will be too low. If it's at 12" back, you can easily start at 1/4" below and go up from there. Most likely, you'll end around 1/4"-1/2" above. Hoss Triton, ET's, Drag 4 all work well. And Todd at Hydromotive can definitely help you if you want to go new. He also has a GS, so he knows these boats.
2006 Spectre 24' SCS
2020 Mercury 300 ProXS
2001 Allison XB2003
2006 Mercury 250XS
1988 22' Velocity (sold)
1995 Allison Grand Sport (sold)
1998 Mercury Stock 2.5-260 SS
1990 Velocity 30' - 502's (sold)
Go Daddy Go! Racing
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12-05-2017, 06:54 PM #6
5000 RPM
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As others have said, Todd at Hydromotive is the man for setting this boat up, give him a call!
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