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| Clutch thrust race https://ausmini.com/forums/viewtopic.php?f=2&t=96373 |
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| Author: | Ian_B [ Tue Nov 28, 2017 6:47 am ] |
| Post subject: | Clutch thrust race |
Does anyone still stock the better quality old school variety ??? |
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| Author: | drmini in aust [ Tue Nov 28, 2017 7:59 pm ] |
| Post subject: | Re: Clutch thrust race |
Both the Timken and SKF flat ones have been obsolete for years, and old stock anywhere seem to be gone now. |
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| Author: | Ian_B [ Tue Nov 28, 2017 8:12 pm ] |
| Post subject: | Re: Clutch thrust race |
Bloody hell I need to get a good second hand one Hopefully the one in my 998 bits motor is still OK.It all depends on the previous drivers habits.Thanks Doc |
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| Author: | drmini in aust [ Wed Nov 29, 2017 6:06 am ] |
| Post subject: | Re: Clutch thrust race |
It is possible to make a hardened flat faced cup to go over the later bearing. GR has tried this on some race cars. Edit I run an orange dot diaphragm with the later bearing (an RHP). It's been in for over 20,000 miles and still good. But check the thrust plate on the diaphragm is not soft (some were a few years ago) or not running true ( a common problem). It is possible to take the spring out of a new cover and fit it to an earlier one that isn't made crooked. |
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| Author: | Ian_B [ Wed Nov 29, 2017 11:38 am ] |
| Post subject: | Re: Clutch thrust race |
Thanks very much Doc .Cheers! |
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| Author: | simon k [ Wed Nov 29, 2017 4:07 pm ] |
| Post subject: | Re: Clutch thrust race |
there *must* be a similar flat faced thrust bearing out there that we can press a sleeve into, or machine the bearing carrier down to fit |
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| Author: | Ian_B [ Thu Nov 30, 2017 6:44 pm ] |
| Post subject: | Re: Clutch thrust race |
Thrust plate on grey diaphram marks easy as with a little needle file .Not good Pull the old school one out the 998 and use the hardened one. Thanks for the heads up on this Doc and I wont be sitting at lights with foot held on clutch.Great advice from a legend 
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| Author: | Goldbrocade_62 [ Thu Nov 30, 2017 7:03 pm ] |
| Post subject: | Re: Clutch thrust race |
Ian_B wrote: Thrust plate on grey diaphram marks easy as with a little needle file .Not good Pull the old school one out the 998 and use the hardened one. Thanks for the heads up on this Doc and I wont be sitting at lights with foot held on clutch.Great advice from a legend Sitting in the shed probably lol |
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| Author: | drmini in aust [ Thu Nov 30, 2017 8:21 pm ] |
| Post subject: | Re: Clutch thrust race |
The other clutch part that is rubbish these days is the cheap release bearing plunger. It is free machining steel and very soft. Can't be hardened. Wears fast where the clutch arm sits. I have put hardened steel bushes in a few new ones. Should last like an original. |
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| Author: | cooperess [ Thu Nov 30, 2017 8:26 pm ] |
| Post subject: | Re: Clutch thrust race |
Can someone put up a picture of the part so I can understand a little easier. |
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| Author: | drmini in aust [ Thu Nov 30, 2017 8:55 pm ] |
| Post subject: | Re: Clutch thrust race |
http://minispares.com/product/Classic/C ... o%20search |
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| Author: | Ian_B [ Fri Dec 01, 2017 7:20 am ] |
| Post subject: | Re: Clutch thrust race |
Do they wear on the cylindrical bit or only where the clutch lever seats .The hardened bush is a great solution.Might try and get a good old one from mini wreckers |
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| Author: | drmini in aust [ Fri Dec 01, 2017 12:29 pm ] |
| Post subject: | Re: Clutch thrust race |
Most wear is inside where the ball sits. The trouble with getting old SH ones is they are worn in there too, but you can't drill them out readily because they are over 50HRC Rockwell hardness. You could anneal it by heating red hot for 5 mins then cooling slowly... But it's less hassle to buy a new soft one and drill it for a bush. Edit PM sent. |
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