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PostPosted: Mon Nov 25, 2019 8:50 pm 
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Location: Cambridge, MA, USA
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Another in my occasional series of articles under the general theme of ‘adventures in classic mini ownership’. I’m posting with prior permission of Mark - these were originally written by me for our local mini club newsletter, but I thought may be of wider interest here.
This one is a multi-parter, based on this thread but with technical details reduced for a more general audience.

Part 1 - “Gearing up” - from the December newsletter is attached (click to enlarge), and Part 2 will probably be run in January’s edition.


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PostPosted: Mon Nov 25, 2019 9:35 pm 
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Location: Abingdon Oxfordshire
Mark, will you do us all a favour and, if Iain agrees, at the end of this series, publish it in full (and bigger size please!) on the how-I did-it part of the tech forum. Timely too as I'm about to start sumfink similar but 4 speed all synchro. Thanks Iain and Mark


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PostPosted: Mon Nov 25, 2019 10:09 pm 
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Peter, pm me your email address and I’ll send you the draft text for the complete series of articles. But bear in mind that I deliberately dumbed down the actual sequence for a more general audience.

This one is much more of a running commentary, than a technical how-to. There are some good hands-on videos on YouTube if it’s a technical guide to rebuilding that you’re looking for.


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PostPosted: Tue Nov 26, 2019 12:20 am 
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Location: Melbourne, Australia
In case it's of interest I have scanned a four page article from the Sept 1972 issue of Cars and Car Conversions magazine that describes with text and photos how to rebuild a 3 speed Mini gearbox. I can post on here on request.


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PostPosted: Tue Nov 26, 2019 9:34 am 
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Always happy to post & host this type of article.

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Mark F
Forum founder, backer & only admin for nearly 20 years.
I Must be f*&%^g mad


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PostPosted: Tue Nov 26, 2019 10:19 am 
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Location: Melbourne, Australia
mk1 wrote:
Always happy to post & host this type of article.

Below courtesy of Cars and Car Conversion magazine - September 1972 issue.

Please click on the link below to open the file.

http://mk1-performance-conversions.co.uk/pdf/3sync.pdf


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PostPosted: Wed Nov 27, 2019 12:01 am 
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Peter Laidler wrote:
Mark, will you do us all a favour and, if Iain agrees, at the end of this series, publish it in full (and bigger size please!) …


If you place you cursor on the image and click, the image opens up. Then you can click on it again and it will enlarge to the original size. If you right click your mouse you can copy the picture to your hard drive and view at your leisure, obviously remembering where you saved it to.


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PostPosted: Wed Nov 27, 2019 5:29 pm 
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The C&CC article is very close to the sequence I used, but I will highlight two differences:

1. The A type gears did not all use bushings. Late A type gears (eg the 190 gearbox used on 1071 S) have needle rollers on the 3rd gear. I found that out the hard way - details to follow in part 2 of my article.

2. The modern reproduction laygear does not use a spacer between the inner circlip and the bearing. Instead, the laygear is now machined to use the longer needle roller bearing cages used on the 4 synchro box. Both bearings stop up against the inner circlips, so the assembly drawings in the original akd are now quite misleading.

Also, I rebuilt it with an ‘S’ Hardy Spicer diff rather than using an LSD, so that was a little more straightforward.


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