Re: nissan 90 1990. are they a good reliable motor?
The NS90A is no longer being made for the North American market. It's a 3-cylinder, 3-carburetor, auto-mixing 2-stroke. Just serviced one this week. Solid design, easy to work on, carb kits and wp kits are still being made. Good power-to-weight ratio compared with 4-strokes of similar hp. But they are getting long in the tooth. The lower carb is NLA, and when the upper and middle carbs get used up from stock, they will likely also go NLA. However... if it's in good shape now (non-saltwater use), and if you treat it well, and don't blow it up by abusing it, you should be fine.
