Tag: stroke

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 »

It has been and is being done. Dear ATVC: If development of 2-stroke race quads didn’t end years ago, would have we gotten fuel injected models? Is it possible to fuel inject a reed valve engine? The answer is a resounding yes to both questions. How can we be so sure? Many industries never stopped […] More »

Turning a 250 into a 280. Dear ATVC: I have a Suzuki Ozark 250 that I want to overbore. There is a kit made by Four Stroke Tech to get it up to 273cc. The stock engine displacement is 246cc, cylinder bore is 66.090mm, piston diameter is 65.88mm and the engine stroke is 71.7901mm. So […] More »