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  #1  
Old 07-27-2008, 09:53 AM
shawn1127 shawn1127 is offline
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Join Date: May 2006
Location: pa from md
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Default prop size for 140 zuki

guys i need your help agin iam picking my new eng up this week i talked to a guy in pompano last week says thay have installed a few 140s on 20'sf and swung 20 or 21 pitch prop
i have looked thru past threads and have not found a
discussions on this motor and prop config i no some of you
are running this eng any help i would be greatfull
thanks
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  #2  
Old 08-01-2008, 08:31 PM
shawn1127 shawn1127 is offline
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Default Re: prop size for 140 zuki

went w/21 pitch i will see how it works
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  #3  
Old 08-17-2008, 12:38 AM
muddywater muddywater is offline
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Default Re: prop size for 140 zuki

While we are asking about Zuki's, what sayeth the prop gurus on the pitch of a Rev 4 on a Zuke 175 for a SF20?

Merc Prop Selector says 14.625" x 23"
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  #4  
Old 08-18-2008, 08:45 PM
shawn1127 shawn1127 is offline
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Default Re: prop size for 140 zuki

14 x21 ran fine but max rpm was 5700 got a 14x19 should do the deal time will tell 29@4000 is nice though
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  #5  
Old 08-18-2008, 10:54 PM
Jon G Jon G is offline
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Default Re: prop size for 140 zuki

My 20' came with a 20 Suzi prop and it only topped out at 5700rpm (bottom of the WOT rpm range), I switched to an 18 and now it revs to the max 6200rpm at wot and is much more responsive with a beter whole shot and better fuel economy the 20" pitch was borderline for my boat boat the 18" is perfect. Fully loaded heavy boat will just make 6200.
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