Reproduction Parts for 1916-1964 Chevrolet Passenger Cars & 1918-1987 Chevrolet & GMC Trucks



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Joined: Sep 2011
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ken26 Offline OP
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My 1926 Chevy has a 1927 style carbon clutch thrust insert and seems to be working OK.
Is it worth the effort or cost to replace the above set up with a carbon to ball bearing conversion as shown in the filling station catalog part # CV102? It appears to be the Verlyn Husman design.
I would appreciate your thoughts.
Ken26

Filling Station - Chevrolet & GMC Reproduction Parts


Filling Station


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Hi Ken,

If your carbon throw out bearing is working fine and you aren't otherwise planning to tear take your engine/transmission apart, I don't really see any reason to replace it. I installed the ball bearing type throw out (I got mine through Gary Wallace) on my truck and it works great however, I also completely rebuilt the engine, transmission, replaced the clutch, input shaft, pilot bushing etc. at the same time.

The only "downside" that I know of with the carbon style bearing is that it's not a good idea to keep the clutch disengaged for long periods of time (say at a long stop light) as it will heat up and wear out quickly.

Tyler Platt
Des Moines, IA
1926 1-Ton Truck

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I would not change it. Two of my cars have carbon throw out bearings and I have been driving them in at least 2 parades a year for 30 years as well as regular driving and I have had no problems with them.


Ed
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ken26 Offline OP
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Thank you Tyler & Ed
Based on your comments, I think I will put the throw out bearing replacement job off. I am not having any problems with the carbon bearing at this time.
Ken

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I have several Chevrolets with the carbon throw out bearings. I also have a couple of the modern replacement bearing assemblies that I have never felt a strong need to install. When I rebuild the drive train I install a carbon bearing like originally was used. Maybe I am just old fashioned or want to experience these Chevys like our grandparents did? If you routinely put the transmission in neutral when extended idling (like at a red light) you will extend the life of the bearing as well as the thrust surface on the crankshaft/main bearing.


How Sweet the roar of a Chevy four!
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I replaced the carbon bearing with a new ball bearing type on both of my trucks when I had the tranny out anyway.

1. Even though I put the tranny in neutral and let out the clutch at red lights, I get some peace of mind knowing that the throw out bearing will not overheat in any circumstance.

2. I don't know who will own this truck after me. Probably my son, but just to be safe, having newer technology in this spot is being proactive to prevent a breakdown in the future.

My two cents, Dean


Dean 'Rustoholic' Meltz
old and ugly is beautiful!



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Dean,

The major reason to shift to neutral and let out the clutch on extended stops is to eliminate wear on the thrust surfaces on the crankshaft/main bearings. It is also wise even if you have a modern ball bearing instead of the carbon.


How Sweet the roar of a Chevy four!

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