- Joined
- Nov 26, 2009
- Messages
- 3,080
I've often wondered why more gapless (Dykes?) piston rings are not in common use. The advantages seem obvious. What are the disadvantages other than increased cost?
Most Norton owners haven't tried them so they don't know the difference. They are used to a little oil burning and don't want to spend the extra $50 for a better sealing ring.
See the gapless 2nd ring test by Hot rod at:
https://www.hotrod.com/articles/childs-alberts-zero-gap-second-ring-test/
a quote from the article:
"produced a significant improvement in the entire torque curve, which surprised everyone"
Again - it depends on who you listen to. But I'm seeing less oil contamination on an air cooled motor with a gapless 2nd ring.
Last edited: