Rear/underseat airbox

22-05-2020, 05:42 PM

Anyone know what it's for? Just curious

(I'm talking about the small plastic tank thing found under the seat, seems to be connected to the airbox via a fairly large hose)

Nickj · 22-05-2020, 05:46 PM

It's part of the emissions control, takes vapour and burny oily stuff out of the crankcases, Some will drop back into the cases as condensed oil and water (it's part of the milky oil syndrome) any that doesn't goes into the airbox then is burnt in the motor.

slob · 22-05-2020, 07:41 PM

your 800cc V (L) twin breathes in and out most of it’s capacity behind the pistons with every turn of the engine, the splitter/breather box fools the engine into thinking it has a much larger capacity than it has and seperates any oil droplets out of the air steream, allowing it to drain back into the crankcase.

search the forum for ‘breather’, this was discussed at length on several threads recently

22-05-2020, 07:44 PM

Interesting, thanks guys

Darren69 · 23-05-2020, 09:04 AM

There's an interesting article here: -

http://www.ducati-upnorth.com/tech/breather.php

Tons of otheruseful tech stuff on that site too.

22-05-2020, 05:42 PM	#1
rac3r Guest Posts: n/a	Rear/underseat airbox Anyone know what it's for? Just curious (I'm talking about the small plastic tank thing found under the seat, seems to be connected to the airbox via a fairly large hose)

22-05-2020, 05:46 PM	#2
Nickj Too much time on my hands member Join Date: Jun 2007 Location: Forest Of Dean Bike: S2r Posts: 3,189	It's part of the emissions control, takes vapour and burny oily stuff out of the crankcases, Some will drop back into the cases as condensed oil and water (it's part of the milky oil syndrome) any that doesn't goes into the airbox then is burnt in the motor. __________________ "The final measure of any rider's skill is the inverse ratio of his preferred Traveling Speed to the number of bad scars on his body." Song of the sausage creature

22-05-2020, 07:41 PM	#3
slob . Join Date: Jul 2003 Location: East London Bike: Multiple Monsters Posts: 9,710	your 800cc V (L) twin breathes in and out most of it’s capacity behind the pistons with every turn of the engine, the splitter/breather box fools the engine into thinking it has a much larger capacity than it has and seperates any oil droplets out of the air steream, allowing it to drain back into the crankcase. search the forum for ‘breather’, this was discussed at length on several threads recently Last edited by slob; 22-05-2020 at 07:44 PM..

23-05-2020, 09:04 AM	#5
Darren69 Transmaniacon MOC Join Date: Sep 2013 Location: Sutton In Ashfield Bike: Multiple Monsters Posts: 6,022	There's an interesting article here: - http://www.ducati-upnorth.com/tech/breather.php Tons of otheruseful tech stuff on that site too. __________________ Roast Beef Monster! Termignoni and Bucci - Italian for pipe and slippers! S4 Fogarty, S4R 07T, 748, Series 1 Mirage

22-05-2020, 07:44 PM	#4
rac3r Guest Posts: n/a	Interesting, thanks guys