Probably not the problem. Dear ATVC: I just picked up a 2002 Suzuki LT80 for my son. I have noticed the carb choke plunger only moves about 2mm up and down when pulled or pushed. It seems that the plunger should move more like an inch but I haven’t been able to find an answer […] More »

Sound of a bygone era. Earlier in the week, we talked about the differences between the 2 and 4-stroke internal combustion engine. These days the 4-stroke rules the world, but the topic got us thinking back to a time when the unmistakable bark of the 2-stroke and smell of premix filled the air. To that […] More »

Stroking along. Dear ATVC: This is probably a stupid question but I’m taking Intro to Mechanics in school and all we learn about are 4 stroke engines. I know 2 strokes came first. What determines how many strokes an engine can have? Do they always have to be even numbers? Well for starters, that is […] More »

The science behind the process. When it comes to a four-stroke engine, there is a very simple process taking place every single time your piston rockets up and down its cylinder bore – your intake and exhaust valves open and close once per every two crank revolutions. That means your piston goes up twice and […] More »

Infinity’s VC production engine layout. Dear ATVC: In the automotive game, VC is an emerging new performance technology. Can you explain exactly what this is? Do you think, like everything else in the auto world, it’ll come to our ATVs before long? VC means variable compression and, like the name suggests – it is literally […] More »

You have to see it to believe it. Typically when we think of private collections, we think of things like stamps, coins, maybe baseball cards or model cars. This guy collects Banshees. No, not posters, advertisements or sales brochures. Actual Yamaha Banshee 350cc twin cylinder 2-strokes. We’re going to go ahead and assume he is […] More »

Drag quads are a different breed entirely. Yamaha’s 350cc twin cylinder 2-stroke Banshee is a legend in sand dunes the world over but apparently sometimes that’s just a starting point. The poster of this week’s clip says that he weighs in at 205 pounds but you’d never know it with the way his modified Banshee […] More »