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Getting full port job on 35 MB. Do i need a gear reduction?
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kfehrma
MMT Pro Member
Joined: Thu Aug 26, 2010 3:14 pm Posts: 85
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 Getting full port job on 35 MB. Do i need a gear reduction?
Im getting a full port job on my 35 MB and i have a mikuni and mm exhaust. Im am wodering if anyone has went to a 48 tooth on bottom from the stock 50. Dont know how much it matters but it will be on a 1860. Thanks
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Fri Jul 29, 2011 7:05 pm |
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fowl habbit
MMT 1000 Club
Joined: Sat Jan 16, 2010 1:52 pm Posts: 1130 Location: THE ONE AND ONLY BUFFALO COUNTY
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 Re: Getting full port job on 35 MB. Do i need a gear reducti
I thought stock bottom was 49. I would run it and see if your hitting your rev limiter. If you are the 48 will bring you down a couple hundred rpms
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Fri Jul 29, 2011 7:45 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: Getting full port job on 35 MB. Do i need a gear reducti
Maybe you mean - less gear reduction or "taller gearing" if you want more speed - or more gear reduction or "lower gearing" if you want more power out of the hole....
Well to quote DB.... See pasted quote below....
Here's the MB Gear Ratios- Top gear/Bottom Gear - Ratio: Stock 35- 38/50 - 1.31 to 1 45 Mag- 38/48 - 1.26 to 1 7000- 40/46 - 1.15 to 1 (first models had 38/46 - 1.21 to 1)
They offer 46, 47, 48, 49, 50, 52 tooth lower gears to adjust performance and RPM for specific setups. Changing the bottom gear is easiest. Usually if you choose to change a top gear you would change the clutch at the same time. You just have to select specific ratio for the setup and prop
_________________ 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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Fri Jul 29, 2011 7:58 pm |
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kfehrma
MMT Pro Member
Joined: Thu Aug 26, 2010 3:14 pm Posts: 85
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 Re: Getting full port job on 35 MB. Do i need a gear reducti
correct i figured with the everything ive done to the motor it should be around the same as the 45 mag so i was going to go with a 48 on bottom.
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Fri Jul 29, 2011 9:00 pm |
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deadbird8
MMT 1000 Club
Joined: Wed Feb 04, 2009 7:50 pm Posts: 3833 Location: Old East Dallas, Texas
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 Re: Getting full port job on 35 MB. Do i need a gear reducti
Adjusting the gear ratio is done to adjust/control RPM. Selecting the ratio depends on the RPM you are running now and the target RPM you are trying to achieve. A mikuni and exhaust will not make it run with a 45mag, especially under load. In general the higher ratio, the better hole shot.
_________________ Excel 1851F4 w/ MB35HD+R CDI with a little bit of this and little bit of that
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Sun Jul 31, 2011 8:59 am |
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