Folks,

I have what I thought was an S box. I've had someone send me a message saying they're of the view it is not based on the casing number.

Casing number is 22A1288.

I have no desire to sell someone something that is not what I think it is.

JC

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But he's thriving and striving and hugging the turns.

http://www.ausmini.com/forums/viewtopic ... cce8617911

It could be a transitional mk1 s box from around 1968.

If it is the other stamped in number starts with 12FAxxxxx

See the above thread!

http://www.ebay.com.au/itm/Morris-Mini- ... _500wt_922

It appears correct, except the outputs should be hardy spicer, all the numbers are Cooper S.

Not all Mk1 S boxes got Hardy Spicer outputs. The 1965-66 ones had rubber couplings.

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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.

Do all Cooper S boxes have LSD's or are they an option?

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If its got tits or wheels its gonna cost you

1973 Solid side Leyland Mini Panelvan 1100 in Hairy Lime(Elma)
1976 Clubby project in progress
1966 Morris Mini Deluxe in need of a full resto
1971 Mini K Garden Art

None of them

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1964 998cc Cooper
1971 Mini K x 2
1972 Clubman GT

LSDs were available back then for improved production racing as a Special Tuning part.
Not as a factory fitted option.

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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.

yes , just as the good Doc suggests,,, very early "S" boxes had 3sync & rubber unis,,,, plus that Ley-gear is definately very early "S" for a fact

cheers
Matt

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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.

I thought all the early mk1 s boxes had the 333 case while the very late mk1 transitional boxes were 22a therefore it should have the hardie spicers with the 22a identification.

Would it help to also put up the teeth count for the pinion and crown wheel? That may tell people if it is an S ratio diff.

18/62 is a 3.444 ratio.

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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.

Are you the original owner of the box? If not then who knows what it's history is. The case may not be original, I always learnt to tell by the lay gear anyway. I have a few casings that share numbers with mk2 s coopers (from my research) but the laygear tells of their pedestrian nature.

Are hardy spicer unis easy to swap over? I know pot joints use a different side cover.

Pot joints can use a std side cover. But the diff shafts have circlip grooves.

To change to hardy spicers you need S side covers (as the bushes & shafts are 1/8" bigger), S diff output shafts, and S drive flanges & bolts.. New, these bits are NOT cheap.
You can bore some of the Oz made side covers to fit the S bushes as these covers are thicker.

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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.

Lay gear is 22g232

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But he's thriving and striving and hugging the turns.

How do I determine that?

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But he's thriving and striving and hugging the turns.