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What's my diff ratio?
https://www.ausmini.com/forums/viewtopic.php?f=2&t=27962		 Page 1 of 1
Author:  1018cc [ Sun Feb 11, 2007 9:13 pm ]
Post subject:  What's my diff ratio?
I have used the search function but can't really find my answer. I am just wanting confirmation of the diff ratio in my car (without pulling it all apart!). I have a '67 Deluxe with a remote change. So far I have been under the belief that it would be the same as a Mini K (3.65) but I would just like to know for sure.

The reason I'm asking is because: I want to know how hard I'm revving it (as it didn't come with a tacho - and I don't really want to spoil the look of the interior by getting one) so if someone who has a standard gearbox/diff could possibly tell me at what speeds in what gear is the redline?

Thanks
Author:  Morris 1100 [ Sun Feb 11, 2007 9:26 pm ]
Post subject: 
Diff ratio for a Deluxe should be a 3.76:1.
Author:  drmini in aust [ Sun Feb 11, 2007 9:27 pm ]
Post subject: 
what he said...^^^ :wink:
Author:  1018cc [ Sun Feb 11, 2007 9:30 pm ]
Post subject: 
Thanks guys. Do you know what kind of speeds you should be doing at about 6000/6500rpm though (in 1st, 2nd and 3rd)?
Author:  Morris 1100 [ Sun Feb 11, 2007 9:46 pm ]
Post subject: 
The 3.76:1 will give you about 23.7kph per 1000rpm in top gear.
The gear ratios are
1st = 3.628
2nd = 2.172
3rd = 1.412
4th = 1.0

So
1st = 6.532kph per 1000rpm (6000 = 39.1kph)
2nd = 10.91kph per 1000rpm (6000rpm = 65.4kph)
3rd = 16.78kph per 1000rpm (6000rpm = 100.68kph)
4th = 23.7kph per 1000rpm (6000rpm = 142kph)

Download gearcalc It will work it out better than I have just done. (I don't have it on this computer)
Author:  1018cc [ Tue Feb 13, 2007 7:57 pm ]
Post subject: 
Thanks Morris1100, that is exactly what I was after! At least I know how hard I'm revving it now.
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