The NU50 is the largest engine of that style.
I'm currently working to bolt an NU50 engine to my Express frame.
If you're looking for more power you can bolt on a bi-turbo exaust, replace the spark plug cable with a non restrictive one, fiddle with your carb, replace variator weights, adjust ignition timing, consider fuel additives, etc.
There's still ways to get more power out of that engine.
Posted on Apr 21, 2005, 6:24 PM from IP address 154.20.212.87
