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by Joske Vermeule, September 1
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Forums39
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Jun 14th, 2026
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Joined: Mar 2009
Posts: 3,825 Likes: 69
Talk Morgan Addict
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Talk Morgan Addict
Joined: Mar 2009
Posts: 3,825 Likes: 69 |
Maybe explains why my dealer thought there may have been a remap.....
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Joined: Aug 2013
Posts: 5,210
Charter Member
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Charter Member
Joined: Aug 2013
Posts: 5,210 |
So, mine is doing 55mph at 3000 revs in 4th. I didn't spec the axle so maybe they are just fitting the 4:1 now?
Nick You luck man you have a 4.10 ring and pinion in your axle for free!  Must have run out of the standard ones that say when they made that one! 
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Joined: Aug 2014
Posts: 265
Learner Plates Off!
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Learner Plates Off!
Joined: Aug 2014
Posts: 265 |
So, mine is doing 55mph at 3000 revs in 4th. I didn't spec the axle so maybe they are just fitting the 4:1 now?
Nick I'm at 58mph at the same (Sat Nav speed = speedo). Not that I know what this means... 
Looking for another Morgan!
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Joined: Aug 2014
Posts: 265
Learner Plates Off!
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Learner Plates Off!
Joined: Aug 2014
Posts: 265 |
Same revs in 5th is 71 mph.
Looking for another Morgan!
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Joined: Dec 2011
Posts: 486
Learner Plates Off!
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Learner Plates Off!
Joined: Dec 2011
Posts: 486 |
So, mine is doing 55mph at 3000 revs in 4th. I didn't spec the axle so maybe they are just fitting the 4:1 now?
Nick I'm at 58mph at the same (Sat Nav speed = speedo). Not that I know what this means... Basically speaking, you have the Aero Racing diff ratio in your Mog. On a stock engine you will have the feeling of a tuned engine as you will accelerate through the gears quicker. To understand more have a look here: http://www.performanceprobe.com/index2.php?redirect=http://www.performanceprobe.com/misc/index.php?do=calc&page=gearspeed Play with the ratios in the diff, you now have your gearbox ratios and the you have your tyre sizes. The transfer the info to when your driving to see how the car feels in the rev ranges and gears.
Cain
Wolf Cafe Racer
4/4 Sport
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Joined: Aug 2014
Posts: 265
Learner Plates Off!
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Learner Plates Off!
Joined: Aug 2014
Posts: 265 |
Looking for another Morgan!
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Joined: Aug 2014
Posts: 265
Learner Plates Off!
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Learner Plates Off!
Joined: Aug 2014
Posts: 265 |
Measured MPH on GPS and used the Mazda ratios and final drive on the calculator is 3.92, which I'm guessing doesn't exist
Looking for another Morgan!
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Joined: Dec 2011
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Learner Plates Off!
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Measured MPH on GPS and used the Mazda ratios and final drive on the calculator is 3.92, which I'm guessing doesn't exist There is a 3:91 gear set, which would give the best of both worlds economy and sport. still a lucky man! Cain
Cain
Wolf Cafe Racer
4/4 Sport
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Joined: Apr 2008
Posts: 12,260 Likes: 319
Scruffy Oik Member of the Inner Circle
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Scruffy Oik Member of the Inner Circle
Joined: Apr 2008
Posts: 12,260 Likes: 319 |
Measured MPH on GPS and used the Mazda ratios and final drive on the calculator is 3.92, which I'm guessing doesn't exist There is a 3:91 gear set, which would give the best of both worlds economy and sport. still a lucky man! Cain 3.91, presumably that's the 47/13 arrangement? Will they fit the Salisbury axle, or are they just for the BTR, do you know?
Tim H.
1986 4/4 VVTi Sport, 2002 LR Defender, 2022 Mini Cooper SE
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Joined: Aug 2014
Posts: 265
Learner Plates Off!
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Learner Plates Off!
Joined: Aug 2014
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Measured MPH on GPS and used the Mazda ratios and final drive on the calculator is 3.92, which I'm guessing doesn't exist There is a 3:91 gear set, which would give the best of both worlds economy and sport. still a lucky man! Cain Nice one Cain! Cheers.
Looking for another Morgan!
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