Post by
Darius »
https://forums.nicoclub.com/darius-u5470.html
Mon Nov 27, 2006 11:48 am
I was looking to replace my rings on my RB25 build, but had a very difficult time finding the right size. Over the course of my search, I swear I ran into a set of aftermarket rings for the RB26 from CP or Wiseco or some other major manufacturer. Sorry I can't remember. If you really want to stick with OEM parts, you can also look into some Aussie shops because they can get them just as cheap as the japanese.
I don't know of any other way to fit rings other than to file fit them. I just bought a ring filer for $30 and it was cake! Just make sure you follow the ring manufacturer's specs and not the FSM if you go aftermarket.
Just out of curiousity, are your rings out of spec or damaged or something? If they are in good condition (smooth edges, no knicks) and they are within the FSM spec, I would consider reusing them. How many miles were on your motor when you took it apart?
The RB26 rings are considerably beefier than the RB25 and can hold considerably more power. The main difference is in the top ring. It is about 33% thicker on the RB26.