Did you perform the wire splice before or after the rebuild?

If it's been performed while the motor was stripped, then reset it back to stock, just to eliminate the variable.

Make sure the battery is fully charged, and 100% operational. The NSR is EXTREMELY sensetive to battery condition.

Next, check all the connectors and the earth (ground) points are clean and secure.

Thinking about it logically; if it ran before the rebuild, and nothing apart from the engine internals have been altered, then there is no reason why it shouldn't produce a spark and run - it's almost certainly going to be electrical!

Andy.
NSR-WORLD.COM