Thank you, nice looking tractor. One option I was looking to do on my 8n was to put a catylic convertor on it. There is room for it front of the foot stool. Just not sure how effective it would be as it needs to be at certain temperature to be effective.
i just want you to let you know that your overrun clutch is damaging the inner thread for the pto cover cap. i have seen it on many 8n tractors because the tolerances are to tight. those overrun clutch designers have no glue what they are doing. so check your thread before its to late.
What is the new shiny thing on your PTO output? I was not raised with Tractors so I have no clue. It looks like an extension, but why do I see so many of them/why are they installed? My '54 has the updated PTO shaft for the correct size more new implements. Do I need that device as well?
It is an overrun clutch. It is needed on tractor the does not have a live PTO. Research your tractor and see if it does. I also have a video on the install.