What Gear Ratio Is in My Mercruiser Outdrive With a 4.3 Engine UPDATED
What Gear Ratio Is in My Mercruiser Outdrive With a 4.3 Engine
4.iii mercruiser - 23 pitch 4 blade prop
08-31-2017, 01:15 PM
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Information technology's very light, very curt, very modest deadrise, and the gear ratio is definatley more than the V8's.
Run across hither: https://campionboats.com/boats/535i/
If the 23" works the best, utilise information technology !
Ever let the boat tell you what it wants - and it seems you are listening to it.
08-31-2017, 01:40 PM
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v6 gear ratio standard was i.81 for the alpha outdrive - carb 190 hp in the 2000's twelvemonth models for info.
Mpi V6 -- 220 hp gear ratio standard was 1.62
Mpi true cat V6-- 220 hp the aforementioned ane.62
Last edited by BUP; 08-31-2017 at 01:57 PM.
08-31-2017, 02:51 PM
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In first mail service you lot were considering a 23 prop. That is where miscommunication came from. One thing I don't similar is the term hole shot. Ski boats are shafts for several reasons. One is outdrive life. Blastoff combined with four blade prop combined with accelerating hard tin equal snapped vert shaft.
08-31-2017, 04:03 PM
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Thank you to anybody for the keen feedback. In my first post, I was because the 23 pitch 4 bract to replace my 21 pitch 3 bract which was going by the 5200 RPM mark. Past the cease of this discussion, combined with actual 23 pitch prop operation with my boat, I decided to purchase it. I do not ski very much any more then a snapped vertical shaft hopefully is not in my future. I suspect the small and light Campion 536i makes the 23 the correct choice for me. Thank you!
08-31-2017, 11:53 PM
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Originally Posted by OLDSKIER 
It is a 2013 535i Campion boat with a iv.3 merc. I suspect what comes standard for the lower unit of measurement with a 4.iii merc is the drive ratio ? Please tell me if it matters since the 23 pitch 4 blade works so well with the current set up. Cheers.
By knowing the drive ratio, bodily rpm and GPS speed we can verify performance data. Most V-half-dozen motors won't spin a 23" prop UNLESS the out drive ratio is lower, hence my question. A small boat with a ane.62 or 1.8:1 ratio makes sense that a 23" prop works. Plus everyone has a different calibration for holeshot.
09-01-2017, 12:22 AM
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Originally Posted past Trash
By knowing the bulldoze ratio, actual rpm and GPS speed we can verify performance data. Nigh V-6 motors won't spin a 23" prop UNLESS the out drive ratio is lower, hence my question. A small boat with a i.62 or 1.viii:1 ratio makes sense that a 23" prop works. Plus everyone has a different calibration for holeshot.
For V half dozen Mercruiser, I have currently in for service --- all 190 hp The boats are 2004 18.5 ft Sea ray - a 2009 Glastron 18.5 ft and a 2008 Larson 19 ft and a 2010 Glastron 17.5 ft all in at the moment. All V6 Mercruiser --- all alpha one gen 2 -- all with 1.81 gear ratio and all with 23 pitch iii blade props. All are stock apps. I bank check them out a couple of hours ago. And then I hear you lot.
09-01-2017, 08:49 PM
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Cheers then much BUP. I am very pleased with the 23 pitch 4 blade performance on my 2013 - 18 foot 535i Campion bowrider. It hits all the correct specs then I'thou glad to hear the 23 pitch is a good option for a iv.3 V6 Mercruiser. Thanks once again to anybody for the feedback. Only four more weeks of decent boating season left hither in NB Canada.
09-02-2017, 12:32 AM
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Originally Posted by OLDSKIER
Hello DERIKnKATHY,
With the xiv x 23 pitch (four blade) I am getting a max WOT at 4800 RPM, a max speed of 50-52 MPH and all-time hole shot yet towing a 225 lbs slalom waterskier. I was never able to get these specs with the 21 pitch 3 blade. My only question is you mention lugging. Motor feels very powerful pulling me out, planes very fast likewise, even when pulling me out of the water on one ski. The max RPM is now at 4800... With the 21 pitch I could easily get 5200...which was above WOT RPM. I exercise non sense any lugging at any time with the 23. Promise I am writing the specs correctly every bit i do non want to exist lugging the motor or having the wrong prop. Thanks again for the follow upwardly. Quite possibly, the Campion 535i bowrider is a light gunkhole.
I would doubt your tach reading being accurate having rpm was 5200 and over per your words. It does not matter if this a carb or an MPI V6 app. Carb apps use Tbolt 5 ignition in which has a built in Rev limiter 150 rpms over MAX rpm And the same goes for MPI. but that Rev limiter can be 150 to 200 rpms over max WOT. If your tach is accurate or close something possible incorrect with your Over rev limit.
5 vi - max rpm is 4800
09-02-2017, 12:34 AM
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Originally Posted by BUP
v6 gear ratio standard was 1.81 for the blastoff outdrive - carb 190 hp in the 2000's year models for info.
Mpi V6 -- 220 hp gear ratio standard was i.62
Mpi cat V6-- 220 hp the same 1.62
these all are 4800 max rpm with over rev built in
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What Gear Ratio Is in My Mercruiser Outdrive With a 4.3 Engine UPDATED
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