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Curly
PostPosted: Sun Mar 03, 2013 7:40 pm 
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Does anybody know if it's possible to purchase the early type of clutch release bearing that had a flat thrust face that mated up with the clutch contact plate.
My regular suppliers just carry the bearing that contacts around the circumference of the outer bearing shell and I find that these don't last very long when used with a competition pressure plate. :cry:

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simon k
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PostPosted: Sun Mar 03, 2013 7:42 pm 
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I happened across a few NOS a while ago - and have some left. $80 posted

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miniDave
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PostPosted: Sun Mar 03, 2013 7:51 pm 
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PM sent

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Curly
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PostPosted: Sun Mar 03, 2013 7:55 pm 
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Fantastic - PM sent

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Curly
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Lillee
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PostPosted: Mon Mar 04, 2013 7:51 am 
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These are just timkin thrust bearings are they not?

http://www.minisport.com.au/prod814.htm

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TheMiniMan
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PostPosted: Mon Mar 04, 2013 8:04 am 
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yes,,, just that they`re getting particularly hard to get these days

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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.

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Lillee
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PostPosted: Mon Mar 04, 2013 8:38 am 
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TheMiniMan wrote:
yes,,, just that they`re getting particularly hard to get these days


I see...

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simon k
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PostPosted: Mon Mar 04, 2013 9:08 am 
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Lillee wrote:
TheMiniMan wrote:
yes,,, just that they`re getting particularly hard to get these days


I see...


note that the mini sport page says "N/A NO ETA"...

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Lillee
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PostPosted: Mon Mar 04, 2013 10:12 am 
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simon k wrote:
Lillee wrote:
TheMiniMan wrote:
yes,,, just that they`re getting particularly hard to get these days


I see...


note that the mini sport page says "N/A NO ETA"...


Yeah I realised that after Matt's post

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michaelb
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PostPosted: Mon Mar 04, 2013 2:07 pm 
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Quote:
don't last very long when used with a competition pressure plate.

Yes I found out the new ones start to wear a groove in the surface of the mating plate :shock:

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drmini in aust
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PostPosted: Mon Mar 04, 2013 2:52 pm 
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michaelb wrote:
Quote:
don't last very long when used with a competition pressure plate.

Yes I found out the new ones start to wear a groove in the surface of the mating plate :shock:

That's because the mating plates are now soft. They used to be harder.
Some of the race guys swap their old plates in when they buy a new diaphragm, or put the new spring into their old diaphragm cover.

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simon k
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PostPosted: Mon Mar 04, 2013 2:56 pm 
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michaelb wrote:
Quote:
don't last very long when used with a competition pressure plate.

Yes I found out the new ones start to wear a groove in the surface of the mating plate :shock:


yeah, I had that too - I surface ground the plate a couple of times over the life of a couple of the standard bearings, then replaced it with the flat faced type and it's perfect

they'll also survive running off-centre if your wok is worn through the hole making the thrust carrier crooked when you push on the clutch pedal. Standard ones don't like that...

like Curly said, if you need a clutch that can handle more than standard torque levels, the crappy thrust bearings available now can't handle it

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drmini in aust
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PostPosted: Mon Mar 04, 2013 3:03 pm 
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The original flat faced bearing was used with the coil spring clutches eg 850, 997 Cooper and 1071S.
Then they brought out the `new' (POS) one when they introduced diaphragm spring clutches.
Why did they `fix' it, when it wasn't broke... :cry:

Old (good) flat one is obsolete because it was `replaced' 50 years ago.

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