OS 77 engine
Hi,
There was a problem with the rods if you were running a dynamax or ramtec fan, higher RPM'S than a byron fan. I don't think there was a problem w/ the rods using a Byron set-up. I got a replacement rod MANY years ago from a company called RPM, but I'm pretty sure he's quit making rods. The DF guys would know for sure.
Regards,
Jon