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Hi, this is original 1970 muncie out of my Roadster. The problem is once the car has been warmed up/driven for a couple miles it becomes increasingly more difficult to shift into second gear (clunking). Once I opened it up it seemed to been recently rebuilt? I have two questions:
1. What are the three (half-worn) tabs/bumps on the countershaft?
2. Anyone seen a gear-toothed thrust washer before (you can barely make it out in front of the countershaft)
Thanks, Mike
The toothed "washer" plate is stock. Anti rattle thing or something. The 3 nubs are the attachment points for the toothed plate. They should not be rubbing on anything. The rubbing is not good.
The hard to get into second gear is a synchronizer problem. Hope you are using old school dinosaur GL-4 90wt gear oil. The synchronizer is having difficulty grabbing on to the second gear cone. If you are running synthetic gear oil you might try removing it and going back to the proper stuff. The synthetic is pretty slick and might not allow the sychro to do its job. I know I went back right after trying synthetic. It was a little noisier too.
Agreed it is a synchronzer problem. Are the synchronizers (brass ring in your pic) worn or scarred up? If they look good, I would try the oil solution mentioned above. Otherwise, time to replace the synchronizers.
The syncros themselves look fairly new but the syncro hub looks really worn. I have it on the bench so I'm pulling it apart to check out the previous rebuild. Thanks for the replies.
When you get it apart, look at the teeth on the outer diameter of the brass ring, and also the inner diameter. The inner should have obvious rings in it. Then take the ring and set it over the synchro hub and press down and try to turn. You should feel the drag increase as you add pressure. If you get very little resistance then most likely the brass ring is worn or stretched.
Great reference! He built the rock crusher that's in my avatar car. In talking to him a few times during that process, it was obvious that he's like a walking encyclopedia on Muncies. He's certainly at or near the top in the country for Muncie expertise.
Muncie Experts Needed
He built the rock crusher that's in my avatar car. In talking to him a few times during that process, it was obvious that he's like a walking encyclopedia on Muncies. He's certainly at or near the top in the country for Muncie expertise.