When I was growing up I remember going to the cottage in the summer time and boating. It was a big part of our vacation. I remember the sights, sounds and the smell… oh yes the smell. The smell of two-stroke exhaust. It was a very distinctive scent. Ah yes, 2-stroke engines. Mixed oil and gas burnt together and exhausted in the water leaving a oily water pattern in the lake and smelling quite unique. Although worse for the environment 2-stroke engines were the choice for many different applications.
Most of that is behind us nowadays. The 4-stroke engine has taken over the outboard market as well as many others. Dirt bikes, Lawnmowers and other power equipment have made the change to cleaner burning 4-stroke engine technology. Although I miss 2-stroke dirt bikes and outboard motors I understand that the environment is better off with the new “straight gas” burning engines.
2-stroke engines were a choice engine for many different applications for a few reasons. For one, they were cheaper to produce since they required less material and time to build. Two, they were easier to work on if they broke down since they were less complicated than 4-strokes. Three, they were lighter than 4-strokes since they had fewer components and Four, because they could operate at any angle or position since they did not use a oil bath in the crank case to lubricate the cylinder. They could run upside down even because 2-stroke engine cylinders are lubricated by the oil mixed in with the gas whereas a 4-stroke would burn out when the oil didn’t splash on the cylinder walls.
Even companies such as Seadoo which most people associate with the one and only personal watercraft (PWC) have eliminated 2 strokes from their lineup. PWC’s have long been powered by 2-stroke engines mainly due to the fact that they can roll and jump around without worrying about engine troubles. Now Seadoos are cleaner burning machines with the 4-Tec Rotax engines. As always BRP has done their homework on these machines.
The main reason for the change to 4-stroke engines is obvious. Cleaner burning. However the benefits don’t end there. No more oily residue in the water from outboard boat motors which was a trademark of the 2-strokes of yesteryear. They don’t smell as bad as 2-strokes when they are running. Plus one of the biggest advantages to 4-strokes is that they put out way more torque than a 2-stroke ever could. This is a bonus when you are trying to push a larger heavier boat like a sailboat.
So even though they are cheaper to produce and so on the environmental benefits won out in the end. I must say it is sad to see 2-strokes gone from competition motocross as I am a big fan but on the other hand it is good to see our lakes getting a break from the oil pollution left behind from 2-stroke outboard motors. If you’re in the market for a boat, lawnmower or a dirt bike, try and buy one with a 4-stroke engine for all our benefit.
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