Hey all,
I was given an old 3 synchro gearbox in exchange for a carbie a little while ago and I started to pull it down the other day.
Its casting number on the box was 22A1522 and the Laygear had 22G232 stamped on to it. I spoke to a bloke and he thinks it may be a cooper"S" gear box.
Is this true of is he just pulling my leg
I thought Cooper"S" casting numbers were 22G333 or 22G1128.

Regards LUCAS ENGLAND

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"Ride hard or die trying"

Nope it's not an S box, well those gears aren't- S laygears were 22G1100 (3 synchro) and 22G1040 (4 synchro).

<edit> the case number could be S, that number was used on the last of the 3 synchro boxes. But yours has got the wrong gears inside...

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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.

Has it got hardy spicer output shafts?


Doogie

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I won Hay once, here's the pic to prove it..


Hay, it's not about the car, it's not about the venue, it's about the people that come here. Peter Dwyer, Mayor of Hay NSW.

Early Mk1 S had rubber unis, like all Minis then.

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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.

It did have hardy spicers, but the bloke that had it before me wanted the diff and spicers so he took them out before gave me the box.
Dont even know the Diff ratio that it had in it!

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"Ride hard or die trying"

According to my books this is a Mk1 Cooper S box and gears from early Jan 1966. It could be either hardies or uni's.

The following link gives some interesting info:

http://mcr.mywowbb.com/forum30/1257.html

Sounds like a good swap to me!

According to my MINI workshop manual:
From Cooper S Engine No. 9F/SA/Y 31001 There was a change to the gearbox with the introduction of stronger "B" series gears and a change in laygear with the normal mini 22G231 and the Cooper "S" 22G232.
I have one of these gearboxes sitting in the garage which came from my Cooper S' which has 1/69 on the wiper motor.

Therefore your gearbox is a MK1 Cooper gearbox.

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1969 Cooper "S"
1967 Mini Deluxe
1973 Clubman Van (the fleet spare)
1978 ex 1275 LS ("Wizard" Eaton Supercharged)
2015 HSV GenF GTS(occasional drive & tow car)
2019 MINI F55 Cooper S

What diff Ratio would that box have run?

_________________
"Ride hard or die trying"

18 teeth pinion 62 teeth crown wheel, 3.444:1