liquid cooled or air cooled? By mike932 (Read 960 times)

[mike932]

What are your opinions on liquid cooled scooters around 150cc?  I heard liquid cooled is less reliable than air cooled

[richardv]

My personal preference would be air cooled up to 150cc because it is simpler and lighter. I would prefer water cooled for 250cc or larger. Water cooled gives you a more efficient larger engine.

[crwford]

It depends on traffic air flow counts for cooling if you in traffic jam good chance of over heating water cooled not much of a chance. We had a parade for Viet Nam Vet 2 had to drop out till they cooled down. As far as Dependable water cooled is just as good as air cooled maybe better IMO

[Alleyoop]

Liquid cooled on a scooter gives you both cooling, AIR AND LIQUID and the cooler a motor runs the less power is looses.
Alleyoop

[jct842]

I'll go with richard on air for 150 sized scooter, 250 for that matter too. An air cooled scooter is not going to over heat in traffic. Air cooled means it has a fan and the fan blows air to cool it. Unless some one has messed with the engine it should be fine at any speed. You will get more power with water cooled, but with it comes a host of problems for a budget scooter engine. When you get into a top dollar machine those problems don't exist. People who go for a gy6 look at money spent first and in that case simple is always better.

I would guess some one who has done a few top ends on a gy6 can do it in 20 min with no strain and for less than a hundred bucks. Try that with a water cooled engine.

BOTTOM LINE: you want cheap go air cooled, if you got the money go for a water cooled scooter remembering a honda 150 can cost as much porch full of gy6 scooters!

[crwford]

I'll go tell my two friends who's over heated and tell them it's all in there heads just keep engines running and don't believe temperature gauges I'm sure they will be LOL with that one other was a Harley trike which also over heated at around same time. He put on fans to help and it works and this was a 35,000 trike.

[jct842]

A fan cooled engine will not over heat in traffic or when just idling, unless some thing is wrong with the engine. On the other hand a motorcycle type air cooled engine has no fan and requires movement thru the air to stay cool. The makers of all the millions and millions of briggs engines and the like will confirm this. A FAN COOLED ENGINE MAKES IT'S OWN COOLING.

[cyborg]

I run aircooled engines in very hot Southern California,,in August and September,,the hottest part of the year here,,,snapon temp gauge verified 160+ road temps,,I run synthetic in my 150cc Stella fan with shroud cooled and my dr350 Suzuki,,,just your regular aircooled lump,,,both work flawlessly,,,no ping or any hint of any problems,,,,but water cooled is "better",,, less chance of hotspotting on cylinders,,,and do generally run cooler overall,,,

[jaxrhapsody]

Apr 12, 2016 12:18:23 GMT -6 Alleyoop said:

Liquid cooled on a scooter gives you both cooling, AIR AND LIQUID and the cooler a motor runs the less power is looses.
Alleyoop

I'd love to see a liquid-cool kit, that still incorperates some fins. I'm sure the liquid-cooled motors still have that fan that blows air on the motor.

[jaxrhapsody]

Apr 12, 2016 21:02:52 GMT -6 jct842 said:

A fan cooled engine will not over heat in traffic or when just idling, unless some thing is wrong with the engine. On the other hand a motorcycle type air cooled engine has no fan and requires movement thru the air to stay cool. The makers of all the millions and millions of briggs engines and the like will confirm this. A FAN COOLED ENGINE MAKES IT'S OWN COOLING.

If you consider Porsche, and VW; The Type 1 was fanless and air coolled until production ceased, and same with Porsche up until 2006, when they started running more power. If one was concerned about over heating, they could always add another fan in front of the bike, or some.small setup in the back to pull out the heat.