Jump to content
IGNORED

What is the purpose of the air box?


ltljohn

Recommended Posts

Just a random question that popped in to my head. What is the purpose of the air box on a motorcycle engine? Does it control air flow? Is it to keep intake noise down? A curious mind wants to know.

Link to comment
Just a random question that popped in to my head. What is the purpose of the air box on a motorcycle engine? Does it control air flow? Is it to keep intake noise down? A curious mind wants to know.

 

Afternoon ltljohn

 

The air box is kind of multifunctional.

 

It does tune, quiet, & smooth the intake noise as well as remove a lot of the intake droning.

 

It also smooth's the air flow going into the intake tubes to allow smoother & better directed air flow.

 

It also acts as a place for a larger air filter element to mount in front of smaller intake tubes.

 

It also adds a place for the engine crankcase breather to vent oil/pass-by & combustion gas into so

the oil drops out but the pass-by fumes can be picked up then reintroduced into the intakes & burned.

 

Link to comment

I recently learned of the airbox drain plug. On my R1150R, its on the bottom left of the airbox (toward the rear, to my recollection). A quarter turn to remove the plug, and out came maybe an ounce of old blowby oil. I'd post a pic, but right now about 8000 miles away from the bike.

Link to comment

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...