1936 clamshell
 

I have a 1936 Fordor. Reinstalling the engine. On the back of the transmission where the clamshell goes, I have two crown nuts and two normal. Should they all be crown type and should they be wired or cotter pins used to keep them secure?

Re: 1936 clamshell
 

The castle or slotted nuts (there is a difference) are on the top with cotter pins. The bottom two are special hex nuts, with a smaller than normal hex and longer in length with lock washers.

Slotted nuts are hex from one end to the other, Castle nuts are round at the slotted end

Re: 1936 clamshell
 

If you want to be correct as built by Henry, Terry, Oh has it correct, and all of my original '35 Ford's are just as he described.
Even though all the threaded studs have cotter pin holes (for standardization in manufacturing), if you've ever tried removing cotter pins and castle/slotted nuts, that someone unknowingly placed at those two bottom locations, you will immediately understand why Ford did not do that :)

Re: 1936 clamshell
 

https://www.fordbarn.com/forum/attac...1&d=1691663456

https://www.fordbarn.com/forum/attac...2&d=1691663456

Re: 1936 clamshell
 

This picture shows the rear transmisson mount upside-down. The holes for mounting the emergency brake handle should be on the right side of the transmission as you sit in the left hand drivers seat, at least for cars built in the USA.

Re: 1936 clamshell
 

Agreed the mounting is upside-down. For reference RHD English built 35/36s handbrake is also mounted on the right hand side.

Re: 1936 clamshell
 

Re: 1936 clamshell
 

Yes indeed, and hopefully the OP, mmumley, came back to read these responses made on his post, and understands what is necessary to correctly install the drive train in his '36.

Re: 1936 clamshell
 

Thanks for pointing out that it was upside down. It just returned from being repaired at a transmission shop. I would have eventually discovered this but definitely saves me a bunch of time and aggravation.

Re: 1936 clamshell
 

Castle nuts were phased out progressively for most applications in the U.S. in favor of slotted hex nuts, including for the subject application, as a cost saving starting in th '33 model year.