I want to convert from rubber uni's on a 4 syncro box to the steel type as on Cooper S. Currently have 7.5 inch Cooper S disc brake setup with rubber uni's as per mini deluxe. Can it easily be done and what parts do I need to complete the conversion. Thanks in advance.

other than the universals, you'll need the diff side covers - steel uni type has a smaller hole than for rubber unis and pot joints (if I remember correctly...)

I reckon you're better off converting to pot joints, that's what I'm using on my S, though it's a bigger change because the driveshafts and diff output shafts need to change

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did I tell you that I won a trophy?

You would also need Cooper S diff output shafts. Are different to rubber coupling ones.
I agree with Simon, pot joints are an easier cheaper conversion.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

You need all these to convert from rubber universals.


Only downside to pot joints is you need the driveshafts too. You can get a kit with all the parts from minikingdom
http://minikingdomonline.com.au/product ... pot-joint/

If you're changing the diff output shafts you'd probably change the diff pin, bearings and planet gears while you are in there..

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Thanks guys. I do have some pot joint parts but wasn't sure they would fit. Nead to go scrounging in the shed tomorrow to see what's there. great stuff.

motor out
diff out
swap inner axles
& away you go

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No offence intended here but--> anyone writing a book about minis 30 years ago may not have experienced such worn or stuffed-with components as we are finding these days.

You should put your heart & soul into everything you do.

Easy peasy

Matt could do it in his sleep lol

Easy peasy, IF the shafts come out of the CVs. I have had to cut a few CVs up to get the shafts.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

I have a morris mini k out the back which has the exact setup as whats in the picture, did they come out with this or has someone added it? It is tucked out the back awaiting to be my 2017 project, lol!

The "Hardy Spicer" type universal joints were fitted to the Cooper S and the Minimatic. The rubber style were fitted to everything else up until the rod change boxes, which then changed to the pot joints.

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Some Mokes had Hardy Spicers too.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Were they only fitted to a particular Moke model/timeframe?

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Early 70s. Before pot joints came in.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

So worth keeping on if already in there im guessing? Benefits?
Cheers,
Steve