4 Speed Counter Shaft Leak Repair

[Ed S.]

Re: 4 Speed Counter Shaft Leak Repair

I did the RTV "fix" on my May 63 very early Muncie...I pulled the transmission back an inch or so and cleaned the area repeatedly with lacquer thinner. I used the black Ultra RTV along with a super thin piece of flexible rubber cut in a square (don't remember where I got it); prob thinner than most gaskets. Put the square over the countershaft hole coated in RTV and bolted the transmission back up and let things cure overnight.
Yeah - everybody said the transmission would be "cocked" because of the rubber and cause the polar ice caps to melt... Never happened and the transmission works superbly still..

That was in 2015 and its never leaked again and I drive the car a lot, 5,000-6,000 miles/year. Yes, I know its not a permanent fix and doesn't really address the wear on the parts - I intend to straighten it out someday, just haven't gotten to it...

But now, I have a differential cover starting to leak, which I'll fix next week - that sucks because I had the rear nearly completely apart replacing all the rubber and I and a friend rebuilt the trailing arms...last summer.

Frank - thanks for the comment. I like your idea of putting a thin piece of rubber over the countershaft after RTV is applied to it. Re the "think piece of rubber" - like a bicycle inner tube - that kind of "thinness". Also, judging from the picture you posted, it looks like you temporarily inserted long threaded bolts in order to slide the trans back farther - do I envision that correctly? Thanks again.

[Frank D.]

Re: 4 Speed Counter Shaft Leak Repair

Frank - thanks for the comment. I like your idea of putting a thin piece of rubber over the countershaft after RTV is applied to it. Re the "think piece of rubber" - like a bicycle inner tube - that kind of "thinness". Also, judging from the picture you posted, it looks like you temporarily inserted long threaded bolts in order to slide the trans back farther - do I envision that correctly? Thanks again.

Yes, the inner tube for a bike (a THIN one) is a good description and yes, I slid the transmission back on long bolts just enough to do the job...

I have a lift which made the job not so bad...here is another view showing the bolts.

[Ed S.]

Re: 4 Speed Counter Shaft Leak Repair

Yes, the inner tube for a bike (a THIN one) is a good description and yes, I slid the transmission back on long bolts just enough to do the job...

I have a lift which made the job not so bad...here is another view showing the bolts.

Frank, thanks again - the long bolt idea is a good one that I haven't seen or heard of before.