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T-Series 68 B clutch r&r Latest

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68 B clutch r&r up-date

A few weeks ago, the throw out bearing exited stage left. I ordered replacement parts from Moss. I opted for the engine only route - the feedback was about 50/50 on that question. I proceded to remove the radiator and unhook any "attachments" Then removed all mounting bolts. After that the engine came out and revealed that yes indeed the TOB was history. The new pressure plate and clutch disk were very different from the parts that came out. A few questions on the forum determined the new parts should be good to go. The installation was the opposite of the extraction. Mating the engine and trans was not difficult or fiddlesome except for doing it single handed. I gave myself two restrictions - NO "mightaswells" ANYWHERE and it would take as long as it takes. :laugh: I was successful on both fronts!!

It's been back together now for 3 days and I've been driving it every day to and from "the classic car shop near my work" in case I found an unknown problem I missed! :wink: A clean bill of health thus far.

I have noticed some unexpect changes. The engine seems to rev easier. It also starts easier and warms up quicker, needing less choke in the morning. Driving is different too. The release action is pretty much the same, with the engage/release point about 1/2 way through the pedal motion. There is a lot less vibration under power and it feels smoother on the highway. And perhaps most unexpected is I seem to have a higher comfortable top speed on the highway - 70-75 at less RPM than before?

All in all a very favorable outcome!
 
Re: 68 B clutch r&r up-date

Great news! Did you pull the exhaust manifold or try to work around it. I have done it both ways and always pull it now unless I am dealing with headers. Then I assess the header installation and make a call from there. Bob
 
Re: 68 B clutch r&r up-date

Left the manifold. Didn't find it to be a problem. Left the carbs and intake too...I figured the less I messed with, the fewer opportunities for uh-ohs to sneak in! :smile:
 
Re: 68 B clutch r&r up-date

I did find something that made a HUGE difference. Craftsman/Sears makes an open end wrench with a built-in, pivoting wratchet end! And the wratchet has the micro action! And they come in regular and short lengths!! :laugh:

Several of the bolts are in very tight quarters as you know! :smile: Not a problem with these modern miracles!!

Ok, you guys probably knew of these. I've been out of the game for quite a while! LoL
 
Re: 68 B clutch r&r up-date

UPDATE: What is the typical lifespan of a carbon TO bearing? I started this post in 2010 and just yesterday the TO threw in the towel. Fortunately it happened JUST as I was pulling it into the garage. My B sees sporadic use between April and October. I've heard tha the carbon can "go soft" if not driven regularly? I was rather surprised when it happened - again. Anyway, looks like a weekend in the garage for me shortly. I'm tempted to go with a roller TO bearing based on Hap's input in another thread.
 
Re: 68 B clutch r&r up-date

Do you leave the car in gear, holding the clutch down when at a signal? If so, that is why your throw out bearing died an early death. With a carbon throw out bearing you only use the clutch to change gears or put the transmission in neutral when idling at a signal - the rest of the time your left foot should be on the floor.
Cheers,
 
Re: 68 B clutch r&r up-date

I ordered a roller TO bearing all excited I got an "upgrade." Until the other night university motors put out a new video on them not working specifically in our B. Says the graphite should last a long time.
 
Re: 68 B clutch r&r up-date

I put a graphite throw out bearing in the 72 in 2005 and now the car is in Texas being driven all the time with the same bearing in it. Graphite is in the TF also. Those bearings will last a long time as long as the mating surface on the pressure plate is in a perfectly smooth and clean condition. :encouragement: PJ
 
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