Originally Posted by
RePeTe
the discovery is a "standard" engine steel bearings, standard crank, standard head.
the JTP/CK are exact replicas of the engines they ran at worlds, ceramic bearing, CRF crank, updated materials, lightened head.
Completely different engines. I would guess, they will eventually update the CRF 5-port to the Worlds specs aswell.
Completely different isn't exactly true, but the differences are what you mentioned.. From my limited knowledge timing on both engines is very simlar.. The current version of the CRF 5 port is only different from the worlds edition by timing, the special edition heads, and serial #'s