Join Date: Mar 2008
Location: Kapuskasing Ontario Canada
Mentioned: 8 Post(s)
With the valve cover removed, you might be able to see if a valve remained open or dropped with a visible space between camshaft lobe and lifter... There may then be more damage seen once head is removed.
Ninja 650R/ER-6 'cop motor' engine is a direct swap, as JDRocks will attest... It will fit and run with your stock ECU, throttle bodies, cooling system, exhaust, etc.