Riddle me this: oil screen

cuong-nutz · February 22nd, 2013, 01:49 AM

So I split the case and just went ahead and removed the oil filter cover and screen. So what is the purpose of the oil filter screen? To prevent large debris from coming out of the oil drain bolt?

red5 · February 22nd, 2013, 10:03 AM

This??

There's no problem with metal coming out of the drain hole (other than the fact that you have metal in your engine). Its there because that area is also the intake for the oil pump. It catches the big stuff before it gets to the pump and then on to the main filter.

ChaoSS · February 22nd, 2013, 06:57 PM

I think it's mostly there to catch excess amounts of gasket material and stuff like that that comes off when the engine is first run.

Motofool · February 22nd, 2013, 07:21 PM

http://www.dansmc.com/kaw_vn750_vulcan_oilflow.jpg

The oil pump is a gear type, which does not tolerate debris between the outer and inner gears.

The mesh area is big, so there is little pressure drop in the inlet, avoiding cavitation.

The pump discharges onto the exterior area of the paper filter.

cuong-nutz · February 23rd, 2013, 11:03 AM

Quote:

Originally Posted by red5

This??

There's no problem with metal coming out of the drain hole (other than the fact that you have metal in your engine). Its there because that area is also the intake for the oil pump. It catches the big stuff before it gets to the pump and then on to the main filter.

Ah okay. I didn't notice the oil pickup.

February 22nd, 2013, 01:49 AM	#1
cuong-nutz RIP Alex Name: Cuong Location: Houston, TX Join Date: Apr 2011 Motorcycle(s): '10 250r, '09 265r Posts: A lot. Blog Entries: 2	Riddle me this: oil screen So I split the case and just went ahead and removed the oil filter cover and screen. So what is the purpose of the oil filter screen? To prevent large debris from coming out of the oil drain bolt? __________________________________________________ HalfFast Racing Team Serving Greater Houston Area Riders:WFO Riders MotoHouston HPC CMRA Ride Smart Fastline Lone Star Track Days

February 22nd, 2013, 10:03 AM	#2
red5 ninjette.org guru Name: Chris Location: Chattanooga Join Date: May 2012 Motorcycle(s): 09 ninja 15.256 Posts: 263	This?? There's no problem with metal coming out of the drain hole (other than the fact that you have metal in your engine). Its there because that area is also the intake for the oil pump. It catches the big stuff before it gets to the pump and then on to the main filter. __________________________________________________ "We're not always doing business, but we're always open." "For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring." Carl Sagan

February 22nd, 2013, 07:21 PM	#4
Motofool Daily Ninjette rider Name: Hernan Location: Florida Join Date: Mar 2011 Motorcycle(s): 2007 Ninja 250 Posts: A lot. MOTY - 2016, MOTM - Dec '12, Jan '14, Jan '15, May '16	http://www.dansmc.com/kaw_vn750_vulcan_oilflow.jpg The oil pump is a gear type, which does not tolerate debris between the outer and inner gears. The mesh area is big, so there is little pressure drop in the inlet, avoiding cavitation. The pump discharges onto the exterior area of the paper filter. __________________________________________________ *Motofool* *.................................Never ride faster than your guardian angel can fly* "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí

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February 22nd, 2013, 06:57 PM	#3
ChaoSS ninjette.org sage Name: Tim Location: Goshen CA Join Date: Oct 2012 Motorcycle(s): 2012 red 250 ninja Posts: 740	I think it's mostly there to catch excess amounts of gasket material and stuff like that that comes off when the engine is first run.