Model A transmission opinion needed

The original gaskets were 0.008" thick, just like the U joint gaskets still are. Some vendors sell 0.013 to 0.020" thick gaskets. Thicker than original gaskets will increase the space in which the front and rear bearings may move under driving conditions. Most important check is how well the front bearing fits into the transmission case. It should be at least a slip fit. If you can slide the bearing in and out of the case by hand, use another case with a firmer fit. The rear bearing pocket is usually OK.
 
In my opinion using gears like that is acceptable. You gotta remember you're moving a 2500lb car with a 40 horse engine not a 4500lb car with 350 horsepower!!!
 
Like nearly everybody above, I'd use that gear. About 10 or 11 years ago, I bought a 1928 Tudor out of Arizona. The previous owner had never checked the gearbox oil. When I checked all of the fluids before driving it, I found the big gear at the front of the lower shaft was just dipping what was left or the oil. The only oil reaching higher was only a fine mist flung off the lower gear. No surprise, every tooth of every gear was badly pitted. I could see a new set of gear in my near future but after looking t the price of them, I decided to try using the ones I had for now.
I flushed the gearbox at least 3 times, replaced the bearings and drove on (with a magnet on the drain plug). The gearbox doesn't make any more noise than any of my others and they are still going tens of thousands of miles later.
That is all a long winded way of saying "drive it".
 
That shaft for the pedals on the multi-disc trans are not the same size. Check your parts before you attempt to punch those bushings out. A little emory cloth, and a vise are all you need to push the new pedal bushings in.
 
Thanks Gene.
All i need now is a break from the cold. I'd rather clean parts outside, but have gotten soft in my old age.
 
Last edited:
Martinbuilt said:
Hi.
Yesterday, i opened up my transmission to check and clean everything, before putting it in the car.
I'm new to these cars, and the one i'm working on is built from spares.
For the most part, everything looks pretty good. The only damage, and i think it's significant, is on the center gear in the cluster. I'll add a photo.
I didn't notice any wear, chips or pitting on any of the other gears. Kind of odd, right?
$425 for a new set is not in the budget.
I have 2 other gearboxes that i haven't checked. This one looked like the best candidate.
If i find a better set in one of those, do i use it? I don't know if mixing used gears is acceptable.
Thanks
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put the top back on,and pretend you did not see it
 
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