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Throwout Bearing L79

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Old 10-18-2010, 07:18 PM
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Brumbach
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Default Throwout Bearing L79

I've installed a LUK clutch. The clutch kit came with a throwout bearing. Some forum members recommend against using it. Autozone offers one made by Timken. Is it any better? Do you recommend another that may be available by Advance Auto, O'Reilly, CarQuest? Thanks -- Bill
Old 10-18-2010, 07:26 PM
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MiguelsC2
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If it's available in a Timken? Buy it!

The cheap foreign THROWOUT bearings,use some kind of off white grease that when hot,flows out of the bearing possibly contaminating the clutch.Stuff is nasty!!
Old 10-18-2010, 08:17 PM
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NOM61
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Just make sure it's a Corvette bearing and not passenger car.

DT
Old 10-18-2010, 08:59 PM
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Chicago Pete
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My new Lakewood bearing did not pass the magnet test but this $6.99 bearing did.



Old 10-18-2010, 09:11 PM
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Pete, you are talking pilot bearings. This thread is about "Throwout" bearings.
Old 10-18-2010, 09:22 PM
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Originally Posted by 1sttexan
Pete, you are talking pilot bearings. This thread is about "Throwout" bearings.
We've moved on from pilot bearings. Clutch linkage adjustment is next.

Larry
Old 10-18-2010, 09:41 PM
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Brumbach
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Originally Posted by Powershift
We've moved on from pilot bearings. Clutch linkage adjustment is next.

Larry
Probably will have something to do with installation of the engine & tranny as a unit before I get to clutch linkage adjustment. Glad you're following my postings with interest.
Old 10-19-2010, 02:14 PM
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JohnZ
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There are two throwout bearings - Corvettes use the "short" (1-1/4" overall) bearing, and passenger cars use the "long" (1-7/8") bearing.
Old 10-19-2010, 02:23 PM
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Originally Posted by NOM61
Just make sure it's a Corvette bearing and not passenger car.

DT
Don't worry about it as long as the passenger car is a V8, there both the same.....
Old 10-19-2010, 05:20 PM
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Originally Posted by JohnZ
There are two throwout bearings - Corvettes use the "short" (1-1/4" overall) bearing, and passenger cars use the "long" (1-7/8") bearing.
The Timken p/n 614018 is 1 1/4". I don't know how to describe it but the center rotating assembly has what looks like a pin installed on the inside of the outer race. What's the purpose of the pin? I'm guessing the pin serves to line up the throw out with everything else.

Last edited by Brumbach; 10-19-2010 at 06:33 PM.
Old 10-19-2010, 06:48 PM
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Originally Posted by Brumbach
The Timken p/n 614018 is 1 1/4". I don't know how to describe it but the center rotating assembly has what looks like a pin installed on the inside of the outer race. What's the purpose of the pin? I'm guessing the pin serves to line up the throw out with everything else.
helps to keep the bearing from rotating

and its one of the different styles...
Old 10-19-2010, 06:51 PM
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Originally Posted by Ironcross
helps to keep the bearing from rotating

and its one of the different styles...
Does it make any difference where it is positioned when installing the TO?

Last edited by Brumbach; 10-19-2010 at 06:55 PM.
Old 10-19-2010, 08:16 PM
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Chicago Pete
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Originally Posted by 1sttexan
Pete, you are talking pilot bearings. This thread is about "Throwout" bearings.
Ooops, been so many threads about pilot bearings..I'm old and confused.
Old 10-19-2010, 09:09 PM
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Originally Posted by Chicago Pete
Ooops, been so many threads about pilot bearings..I'm old and confused.
I did the same thing. My eyes saw "throwout" but my old brain read "pilot"!

DT
Old 10-19-2010, 09:58 PM
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Originally Posted by NOM61
I did the same thing. My eyes saw "throwout" but my old brain read "pilot"!

DT
Why don't you and Chicago Pete start your own thread on "old farts"?

Last edited by Brumbach; 10-20-2010 at 06:29 AM.
Old 10-20-2010, 04:35 PM
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Originally Posted by Brumbach
Does it make any difference where it is positioned when installing the TO?
Nope. Some bearings have the pin, and some have an egg-shaped housing; both do the same thing - just keeps the housing from rotating, doesn't matter how the pin or eccentric are oriented.
Old 10-20-2010, 04:38 PM
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Originally Posted by Ironcross
Don't worry about it as long as the passenger car is a V8, there both the same.....
Depends on the clutch - the flat-finger clutch (not used on Corvettes) takes the long bearing, and the Corvette bent-finger clutch takes the short bearing.
Old 10-20-2010, 05:55 PM
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Originally Posted by JohnZ
Nope. Some bearings have the pin, and some have an egg-shaped housing; both do the same thing - just keeps the housing from rotating, doesn't matter how the pin or eccentric are oriented.
Thanks John.
Old 10-21-2010, 05:03 PM
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Originally Posted by JohnZ
There are two throwout bearings - Corvettes use the "short" (1-1/4" overall) bearing, and passenger cars use the "long" (1-7/8") bearing.
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