Click here to return to the home page.
Classic Morgans
Who's Online Now
4 members (MartO, WR142LLJPN, Guern, Simon), 287 guests, and 122 robots.
Key: Admin, Global Mod, Mod
Top Posters(30 Days)
+8Rich 77
Newest Members
Scot_SJI, Jimmers, Breen60, Davidmog, Stevecarr
9,596 Registered Users
Newest Topics
Tyres for 1990 +8
by CJB - 03/09/26 11:16 AM
2018 Sigma 4/4 ride height
by Neville1 - 02/09/26 09:10 PM
CX moaners
by Malachy - 02/09/26 01:20 PM
Plus 4 Steering rack gaiter
by Strathaven - 02/09/26 12:42 PM
Three BMW tales
by DaveW - 02/09/26 09:53 AM
Phone holder stl file
by Cat302 - 02/09/26 03:59 AM
CX Bonnet Belt
by moggin - 02/09/26 03:24 AM
Latest Photos
Wales
Wales
by Joske Vermeule, September 1
tow bar
tow bar
by G Walker, August 24
Prescott double anniversary
Prescott double anniversary
by CooperMan, August 18
Air Crash Sites: Cairngorms
Air Crash Sites: Cairngorms
by RedThree, August 13
Four-seater luggage rack
Four-seater luggage rack
by Soleng, August 9
Forum Statistics
Forums39
Topics49,868
Posts837,638
Members9,596
Most Online1,063
Jun 14th, 2026
Today's Birthdays
Moggo
Previous Thread
Next Thread
Print Thread
Page 4 of 6 1 2 3 4 5 6
Joined: Mar 2009
Posts: 3,825
Likes: 69
N
Talk Morgan Addict
Offline
Talk Morgan Addict
N
Joined: Mar 2009
Posts: 3,825
Likes: 69
Maybe explains why my dealer thought there may have been a remap.....

Cain #227701 11/10/14 11:31 AM
Joined: Aug 2013
Posts: 5,210
Charter Member
Offline
Charter Member
Joined: Aug 2013
Posts: 5,210
Originally Posted By Cain
Originally Posted By nick w
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! joy


Must have run out of the standard ones that say when they made that one! thumbs


Roger

Mogless in Cheshire. Ex -2011 4/4 Sport

https://thecourtyardcheshire.com/
nick w #227717 11/10/14 01:07 PM
Joined: Aug 2014
Posts: 265
G
Learner Plates Off!
Offline
Learner Plates Off!
G
Joined: Aug 2014
Posts: 265
Originally Posted By nick w
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... laugh


Looking for another Morgan!
Joined: Aug 2014
Posts: 265
G
Learner Plates Off!
Offline
Learner Plates Off!
G
Joined: Aug 2014
Posts: 265
Same revs in 5th is 71 mph.


Looking for another Morgan!
Gulf44 #227723 11/10/14 01:27 PM
Joined: Dec 2011
Posts: 486
Learner Plates Off!
Offline
Learner Plates Off!
Joined: Dec 2011
Posts: 486
Originally Posted By Gulf44
Originally Posted By nick w
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... laugh


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
Joined: Aug 2014
Posts: 265
G
Learner Plates Off!
Offline
Learner Plates Off!
G
Joined: Aug 2014
Posts: 265
Great info. Cheers!


Looking for another Morgan!
Joined: Aug 2014
Posts: 265
G
Learner Plates Off!
Offline
Learner Plates Off!
G
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 laugh


Looking for another Morgan!
Gulf44 #228345 13/10/14 10:56 PM
Joined: Dec 2011
Posts: 486
Learner Plates Off!
Offline
Learner Plates Off!
Joined: Dec 2011
Posts: 486
Originally Posted By Gulf44
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 laugh


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
Cain #228386 14/10/14 08:08 AM
Joined: Apr 2008
Posts: 12,260
Likes: 319
Scruffy Oik
Member of the Inner Circle
Offline
Scruffy Oik
Member of the Inner Circle
Joined: Apr 2008
Posts: 12,260
Likes: 319
Originally Posted By Cain
Originally Posted By Gulf44
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 laugh


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
Cain #228402 14/10/14 09:14 AM
Joined: Aug 2014
Posts: 265
G
Learner Plates Off!
Offline
Learner Plates Off!
G
Joined: Aug 2014
Posts: 265
Originally Posted By Cain
Originally Posted By Gulf44
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 laugh


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!
Page 4 of 6 1 2 3 4 5 6

Moderated by  TalkMorgan 

Link Copied to Clipboard
Powered by UBB.threads™ PHP Forum Software 7.7.5