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Threadjack warning! 140-160 1973

posted by  Charlie142 on  Sun Jul 18 08:13 CST 2010
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last visit: Sat Jul 23 15:38 CST 2011
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I have zero synchro problems. I do occasionally strip the teeth off 3rd gear which is my only recurring transmission problem. I use the remote shifter and you use the long "school bus" one I think. That may be a difference.

I had one transmission that lasted a very long time. Several seasons. I was using a weak pressure plate that allowed a little slippage when shifting so I guess it didn't stress the transmission too much. One time when the transmission was out I pulled off the lid and looked inside. The nubs on the synchro's were almost worn off and the transmission was full of brass. Still it shifted like butter. I put in new synchros and used it for another year or so. Eventually the pressure plate and clutch got so bad that I had to replace them. Blew 3rd gear the next race from the added stress of a grippy clutch.

Those synchro's are silly expensive so I use good used ones. I dress the inside with a light pass of 600 sand paper. I dress the cone on the gears the same way. I think it encourages the synchro and gear to bed together better with a little use. I also check synchros real carefully for cracks.

What happens to yours? Bo they break apart or just crunch on gear shifts?






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