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Mud Slinger
MMT Moderator
Joined: Sun Jan 11, 2009 8:48 pm
Posts: 989
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 Lower units ? = everything made by the MM Mfg. everthing but engine questions go here. thanks 
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duck wacker
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| Sun Jul 19, 2009 12:07 am |
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dorrow
New Member
Joined: Tue Jan 25, 2011 10:19 pm
Posts: 2
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Re: Lower units ? = everything made by the MM Mfg. What's the typicall gear reduction ratio on surface drives
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| Fri Feb 04, 2011 3:05 pm |
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da go get'er
MMT 1000 Club
Joined: Wed Oct 27, 2010 8:30 am
Posts: 3406
Location: Prairieville
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Re: Lower units ? = everything made by the MM Mfg. If an engine ran constantly at 3500 rpms and the reduction is a 2:1. The prop is a 9x6. The known hours on the motor are 892.4 assuming you travel the atchafalya river how many times would one make it to myette point to berwick and back? Part B) How much gas will you burn? Part C) How much beer does that take?
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17*38 Klibert 23GDLT
I toast to staying positive and testing negative!
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| Fri Feb 04, 2011 3:55 pm |
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quackconsumer
MMT Elite Member
Joined: Wed Jan 14, 2009 7:54 pm
Posts: 5582
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Re: Lower units ? = everything made by the MM Mfg.
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| Fri Feb 04, 2011 4:03 pm |
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Branston0311
New Member
Joined: Sat Apr 23, 2011 5:27 pm
Posts: 2
Location: Bossier City, Louisiana
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Re: Lower units ? = everything made by the MM Mfg. Checked lower unit oil last night and realized it was pretty much all milky. Drained it and replaced it . I'm guessing my seal is bad , is this covered under warranty ? PD 36 - purchased October 2010.
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| Sun Apr 24, 2011 6:17 pm |
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thebarlars
MMT Member
Joined: Sat Apr 28, 2012 7:14 pm
Posts: 13
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Re: Lower units ? = everything made by the MM Mfg. I am going to repost my question in this thread.
Well have done some lurking on here and other forums and have run into a question. On the gear ratio of a belt driven sd. 18 Kohler magnum,hill 10x8 prop,1542 lowe. How many teeth on the engine and how many teeth on the bottom would be ideal for some of you that have built you own or messed with the gearing on sd's. Thanks for any input. Let us Know if we left somthing out.
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| Sun Jul 08, 2012 12:31 pm |
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rudyeng
MMT Addict
Joined: Mon Jul 30, 2012 7:40 pm
Posts: 596
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Re: Lower units ? = everything made by the MM Mfg. Im running 36 top 44 bott = 1.22. on a 10x6 I think im near 18 HP ?
1.5 may work better
Hope that helps you.
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| Tue Oct 23, 2012 5:43 pm |
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Mark F. Cheney
MMT Pro Member
Joined: Sat Mar 07, 2009 9:44 am
Posts: 154
Location: Bountiful, Utah
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Re: Lower units ? = everything made by the MM Mfg. I run 10 x 8 props with a Robin 14 HP at 1 1/2 to 1 reduction. For 18 HP I would probably bump it up to 10 x 10 for starters.
Mark F. Cheney
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on the Great Salt Lake marsh
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| Thu Sep 12, 2013 2:21 am |
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mudaholic
MMT Member
Joined: Sun Nov 11, 2012 7:46 pm
Posts: 10
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Re: Lower units ? = everything made by the MM Mfg. branston0311 mine is a 2011 36hp pd and i had the same problem with mine and i called pd and was told that if you back the boat in the water to fast at a steep launch water would enter the vent and go inside the gear case.
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| Tue Dec 17, 2013 7:22 pm |
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duckduckboom
MMT Elite Member
Joined: Tue Nov 23, 2010 6:33 pm
Posts: 5603
Location: Corner of Hell an high water, La
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Re: Lower units ? = everything made by the MM Mfg. look at the date bro
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You have your whole life to be an idiot, take a day off!
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| Tue Dec 17, 2013 7:25 pm |
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4Cody4
MMT 1000 Club
Joined: Thu Mar 31, 2011 11:21 am
Posts: 2530
Location: Land of 10,000 Lakes
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Re: Lower units ? = everything made by the MM Mfg. All the posts on this thread are at least months apart. Wtf?
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"Two people in this world wear helmets, and that's dare devils and pussies." - Willie Braun
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| Tue Dec 17, 2013 7:41 pm |
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hogslayer
MMT Member
Joined: Mon Jan 27, 2014 8:33 pm
Posts: 5
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Re: Lower units ? = everything made by the MM Mfg. I'm trying to put grease in that grease zero under the Allen screw plug on my lower unit and grease doesnt go into it I pulled the grease zero off and grease comes out it but when I put the zero back in and try to grease it . The grease still dsnt go into lower unit what do I do it just started making noise when i put into gear.
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| Mon Jan 27, 2014 8:47 pm |
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Howdy
MMT Pro Member
Joined: Tue Jan 17, 2012 9:50 am
Posts: 359
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Re: Lower units ? = everything made by the MM Mfg. Bad zerk
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''It's just 90 foot you're gonna die if you fall 20 foot so whats another 70 foot'' Jason Humble climbing school 12'
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| Tue Jan 28, 2014 9:43 am |
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Bigrich
MMT Elite Member
Joined: Wed Dec 19, 2012 7:52 pm
Posts: 7064
Location: Mallard country
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Re: Lower units ? = everything made by the MM Mfg.
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| Tue Jan 28, 2014 9:44 am |
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hogslayer
MMT Member
Joined: Mon Jan 27, 2014 8:33 pm
Posts: 5
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Re: Lower units ? = everything made by the MM Mfg. Even though I pulled the zerk out and put it on the grease gun and grease came out of the zerk? What made me check it out is I got my buddy to change my lower unit oil and after I went run it and now when I put the boat in the water and put it in gear it's making a we are sound almost like a electric motor friction noise behind that grease zert so I'm worried that maybe I didn't have enough grease in there? Wat do I do should I try a new grease zerk maybe
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| Tue Jan 28, 2014 3:48 pm |
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Gigafowl
MMT Elite Member
Joined: Tue Jan 13, 2009 7:19 pm
Posts: 6441
Location: Trinity Bay - Texas
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Re: Lower units everything made by the MM Mfg
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Eat - Sleep - Hunt ! ! !
"It is good to have an end to journey toward; but
it is the journey that matters, in the end."
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