The Hodaka Club Forum

Anyone have a way to freshen the threads? I have a cylinder that the pipe and nut must have been loose and flattened the threads. Good cylinder other wise.

Perhaps a metric thread file?

Here's one, probably other brands out there:

https://www.amazon.com/Allstar-Performa ... B003BZLK6O

Looking for a die or something along them lines. Thread file will take days to clean them up.

awwwww, I can't imagine it taking any more than 2 or 3 hours with a comfortable workspace, a NEW (sharp) small triangular file and the beverage of your choice to chase all the threads on the complete exhaust spigot, even with a LOT of flattening.
Ed

I would make sure it was a quality file. I would think cross threading rather than loose because, it would be leaking, noisy and running very lean. ----------------Clarence

I'm on board with the thread file, they've saved my bacon many a time over the years. Or you can make your own die by using an old (or new) exhaust nut, by making a few cuts vertically across the threads for the swarf to go. Might be a bit easier and cheaper than trying to track down a die.

Here's a few links I quickly found on the subject, there's more inspiration available online.

https://www.ehow.com/how_7734911_make-o ... hread.html

Same principle but with a bolt:
https://www.instructables.com/id/Make-a ... om-a-bolt/

I've used this a few times and really helps when its an odd size, pitch or thread count... i.e. Whitworth.

Bev