The one on the right here is thicker around the oil seal and can apparently be opened up for the Hardy Spicer couplings
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| Can you modify non Cooper diff side covers for hardy units https://ausmini.com/forums/viewtopic.php?f=2&t=92950 |
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| Author: | kiwiinwgtn [ Wed Jun 22, 2016 8:53 pm ] |
| Post subject: | Can you modify non Cooper diff side covers for hardy units |
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 |
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| Author: | timmy201 [ Wed Jun 22, 2016 9:10 pm ] |
| Post subject: | Re: Can you modify non Cooper diff side covers for hardy un |
The one on the right here is thicker around the oil seal and can apparently be opened up for the Hardy Spicer couplings
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| Author: | drmini in aust [ Wed Jun 22, 2016 9:46 pm ] |
| Post subject: | Re: Can you modify non Cooper diff side covers for hardy un |
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. |
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| Author: | simon k [ Thu Jun 23, 2016 12:27 pm ] |
| Post subject: | Re: Can you modify non Cooper diff side covers for hardy un |
timmy201 wrote: The one on the right here is thicker around the oil seal and can apparently be opened up for the Hardy Spicer couplings 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... |
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| Author: | timmy201 [ Thu Jun 23, 2016 12:31 pm ] |
| Post subject: | Re: Can you modify non Cooper diff side covers for hardy un |
Keeps the detent ball and spring in on rod change boxes |
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| Author: | kiwiinwgtn [ Thu Jun 23, 2016 6:01 pm ] |
| Post subject: | Re: Can you modify non Cooper diff side covers for hardy un |
drmini in aust wrote: 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. 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 |
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| Author: | kiwiinwgtn [ Thu Jun 23, 2016 7:34 pm ] |
| Post subject: | Re: Can you modify non Cooper diff side covers for hardy un |
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 
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| Author: | drmini in aust [ Thu Jun 23, 2016 7:42 pm ] |
| Post subject: | Re: Can you modify non Cooper diff side covers for hardy un |
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. |
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| Author: | kiwiinwgtn [ Thu Jun 23, 2016 7:47 pm ] |
| Post subject: | Re: Can you modify non Cooper diff side covers for hardy un |
drmini in aust wrote: 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. 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. |
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| Author: | drmini in aust [ Thu Jun 23, 2016 8:43 pm ] |
| Post subject: | Re: Can you modify non Cooper diff side covers for hardy un |
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. |
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| Author: | TheMiniMan [ Fri Jun 24, 2016 7:18 pm ] |
| Post subject: | Re: Can you modify non Cooper diff side covers for hardy un |
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 |
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| Author: | Bill B [ Sat Jun 25, 2016 8:39 pm ] |
| Post subject: | Re: Can you modify non Cooper diff side covers for hardy un |
kiwiinwgtn wrote: drmini in aust wrote: 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. 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 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 |
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| Author: | Kennomini [ Sat Jun 25, 2016 8:54 pm ] |
| Post subject: | Re: Can you modify non Cooper diff side covers for hardy un |
drmini in aust wrote: 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. I'd love to see this kit as it sounds like what I've been thinking about making... |
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| Author: | drmini in aust [ Sat Jun 25, 2016 10:09 pm ] |
| Post subject: | Re: Can you modify non Cooper diff side covers for hardy un |
It was back in the 70s, John Smidt would probably remember them. (Edit) may have been KG Engineering? |
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| Author: | timmy201 [ Sun Jun 26, 2016 8:47 am ] |
| Post subject: | Re: Can you modify non Cooper diff side covers for hardy un |
Bill B wrote: kiwiinwgtn wrote: drmini in aust wrote: 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. 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 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 Bill, the automatic ones are completely different...  
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