04-26-2010, 09:49 AM
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#2
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WetWilly is currently offline
Status: INACTIVE
Join Date: Sep 2007
Location: SF Bay Area, Ca.
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My Year: 1996
My Model: Z240 Talari
My Engine: 7.4L Bravo III
Thanks: 3
Thanked 110 Times in 55 Posts
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Re: prop sizes
Hi gary, hard to say with all the different gear ratios and such.
The best way to check if you have the right pitch props is to make sure your props are in good condition, as any dings or dents can affect the props performance then get out on the water and run the throttle all the way up while watching the RPMs.
If you're propped correctly, your 7.4L should be running between 4200 to 4600 RPMs at WOT (wide open throttle).
If you find that you're able to exceed 4600 RPM, do so only for a very short time as over revving can create quite a mess in the engine bay  .
If you're above or below this range, let us know what the RPMs are and we can advise you on which pitch to run for the type of boating you do.
WetWilly
Last edited by WetWilly; 04-26-2010 at 09:54 AM.
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prop sizes
