Hi I was wondering if you could modify non hardy spicer gearbox diff covers to fit the Hardie Spicer yokes

I recall that some of the non cooper S covers where a solid casting which may have been from a OZ gearbox and therefore there is enough material to machine out.

Has any one done this.

Out of stock at mini spares and $$$ for what they are

Ta

Kiwiinwgtn

The one on the right here is thicker around the oil seal and can apparently be opened up for the Hardy Spicer couplings

_________________

Kiwi,
The thick Oz ones machine out fine, but the S bushes are exxy (S tax). Send me a pm if you want a couple of covers, machined or not.

_________________
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.

can someone remind me why the one on the right has the extra ear on it - I think I knew once but I've forgotten...

_________________
did I tell you that I won a trophy?

Keeps the detent ball and spring in on rod change boxes

_________________

Thanks Kevin. I am sure I have a pair somewhere and some automatic side covers I can rob the bushes from.

I will get in touch if i get stuck.

Cheers

Kiwiinwgtn

Just ventured out into the garage.

why cant i simply turn down the shaft of the yoke. its only 3mm larger than a non S one

I can mark it with a file so it should turn down ok

what am i missing here

All the torque is transmitted through there, if you turn it down 1/8" on diameter you are weakening it severely.
The splines are bigger than on lesser Minis, that is why the outside diameter is increased.

re the bushes- they wear, usually need replacement on a proper gearbox rebuild. If a sloppy fit, the seals leak sooner.
I would fit new bushes, bugger the expense.

Years ago there were Hardy Spicer style drive flanges sold to bolt onto rubber U/J output shafts. Dunno who made them, but I have seen several sets.

_________________
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.

the bushes are another out of stock item.

So if i turn out the standard ones will an S seal fit into a non S side cover or do i need a special seal.

Both the bush and seal housing bores are enlarged by 0.125" diameter. Look like a S cover when done.

S bushes are available, try Karcraft, Minisport Oz or Classic Motoring. I just bought 2.

Edit need to bore bush to size after fitting. They are about 0.007" undersize.

_________________
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 the conversion seals in stock if you just sort the bush part
i also have the std seals
& the "s" seals
& lots of "s" side covers
& millions of std side covers

_________________
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.

If you have the automatic gearbox output covers for the diff, you don't need to rob the bushes from them - you have everything already to fit Hardy-Spicer universals as they used them too. Or have I missed something?
Bill

I'd love to see this kit as it sounds like what I've been thinking about making...

_________________
Respect mine and I'll respect yours.

It was back in the 70s, John Smidt would probably remember them.
(Edit) may have been KG Engineering?

_________________
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.

Bill, the automatic ones are completely different...

_________________