Dual path

C

Captainconcrete

Newbie
62 skylark. I’ve had the transmission rebuilt. Taking back 4 times Every time I get the car back it’s worse. It will only goin reverse occasionally and the biggest issue is it won’t shift into 2nd. The transmission shop is giving up. I can’t find anyone locally that has a clue about these transmissions.
The transmission shop is willing to put a different tranny in it, just curious if there are adapter for the bell housing available
 
I am probably wrong, but, at least with the early dynaflows I believe the transmission does not shift from low to second. Those are just two ranges...??? each haveing a single speed or drive ratio. The driver chooses which to operate the car in and changes from one to the other manually. The ability to develop power is done by the torque converter.

Apparently the best people to talk to about 215 transmission adapters is D&D Fabrications, click here.
 
It is a "Dual Path" as mentioned. It is NOT a "DynaFlow" as per the casting into the rear of the case.
I'm sure once the trans. shop figured out what they had they went to the appropriate repair manual.
They are a 2 speed trans. with a low & a high gear & will shift from low to high at he proper forward speed.
Sounds to me like a valve body problem.

Tom T.
 
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I rebuilt my dual path, it was my first time doing it. I found lots of internal things wrong, fixed them all and it is running today. I used the workshop manual.

The workshop manual can be difficult to understand, might need to read it more than once. Basic settings are the first thing I'd check, linkage, fluid level check, otherwise....

I recall during teardown there is three small intermediate cylinders between the valve body and forward drum center support. You have to remove these, but the o-rings harden up making it a challenge. Some of the shops force teardown, not saying your shop did this. If you see July9 post on this forum you can see its common to things not to go as planned.

Instead of causing damage I made custom tools to remove these cylinders. Also, I made three new ones out of 6061 aluminum and have spare set. There are replacement pieces available in delrin(aftermarket), aluminum(OEM), steel(OEM). orings you can get no problem.

Also, a common area to look at is the babbitted bearing that the main shaft rides on, also wondering if it was cracked on yours. Another place is the shifter that looks like a rooster's crest inside, they crack from age. You have to remove the pan to inspect this. It would've been caught at teardown.
 
Last edited:
Captainconcrete said:
62 skylark. I’ve had the transmission rebuilt. Taking back 4 times Every time I get the car back it’s worse. It will only goin reverse occasionally and the biggest issue is it won’t shift into 2nd. The transmission shop is giving up. I can’t find anyone locally that has a clue about these transmissions.
The transmission shop is willing to put a different tranny in it, just curious if there are adapter for the bell housing available
Click to expand...
Update
took my 62 skylark convertible to another transmission shop. He had the tranny out and disassembled in the first day. took Me back and showed me the disaster that was left. The last guy that rebuilt it assembled it wrong basically trashing everything. Talked to D&D and decided to switch to a different transmission with a housing adapter, and some other modifications But nothing terrible. The cost of the parts alone to rebuild the dual path was closing in on 3k i love my skylark, my wife calls it “The Blue Bullet” but although it’s in very nice shape it’s still a driver.
 
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