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Carbon Release throw out bearings

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79MGB16

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I just ordered a new clutch kit from moss motors. It is the Borg and Beck clutch kit. It included a "carbon release" throw out bearing not a true ball bearing like the original one. It looks like this thing would wear out rather quickly due to the fact that it doesn't spin, it just grinds. Can anyone tell me what their opinions and experience is with this type of throw out bearing, also are there any sources for a true ball bearing throw out bearing??

Thanks
Robert
 
The carbon bearing may "look" like it would wear quickly but in reality they don't seem to unless the clutch release mechanism has constant contact. An awful lot of Healeys have gone well over 100,000 miles with carbon bearings. If my car with 84,000 miles on the original carbon needs the bearing replaced I will use another of the same.

However, for many folks perception IS reality. So if it scares you i'm sure that "better" replacement bearings are available.
D
 
Carbon bearing is OEM. Most drivers are their own worst enemy. Hold the car on a hill with the clutch, keep the pedal held down while waiting for the light to change are both bad praactices. The carbon bearing was designed to be used while shifting, period. Bob
 
Actually, I tried one of the ball bearing units and it didn't last as long as all but my original carbon tipped bearing. The only reason the original didn't last was I was ignorant at what was in there just buying the car (used) and kept it pushed while standing still. The fork ended up going through and destroying the pressure plate after the bearing failed.
I have one in there now that has outlasted the clutch. And it has been in there for at least ten years or more.
 
Carbon thrust bearings can last for years. I think the error in perception that you have is witnessed by the way you describe it as grinding.
In fact, graphite is an excellent solid lubricant.
Don't worry about it, go ahead and fit it !
 
I recently asked a similar question over in the spridget forum and got a nice round of replies. You might want to check it out there!
 
Thanks to all. I used the carbon release bearing, and now with a new clutch its back on the road

thanks again
Robert
 
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