[Trainman40]

Would it be possible to put code 83 insulated rial joiners on code 100 Peco track and for the rail joiners still work?

 

[MichaelE]

Depends upon how wide the rail base is.

 

[Magic]

If they are Atlas insulated joiners that should work.
If you try this take a fine flat file and put a small rounded corner
on the bottom flanges where the joiners go, makes getting
the joiners on much easier.

Magic

 

[Trainman40]

Thank you magic