Have been "told" that '81 Honda Express SR engine (NX50) is same as the '82 Urban's (NU50).
1) Anyone knows for sure that this is true?
2) Can we bolt the entire NX engine onto a NU frame with no "modifications" to "make it work?"
3) If engine IS same, does this imply that carb, air box, gas cable, etc. can be also used from one bike to other?
Second issue: After 10 years (covered) we tried to start SR. Couldn't get gas line to provide fuel. Tried experiment: Did a premix, put it in oil tank and tried to start bike. It ran, but the gas seems to flow out of the overflow line on the bottom of the float bowl--if the engine is running or not! You can put the gas in and it just comes right out via the overflow just as fast as gravity allows. Any ideas why this might happen? Solutions? Suggestions?
We would like to take this functioning engine and put it on the larger, more durable Urban chassis if possible.
Thanks for any info.