R-0990 filter and stock intake runners

cbowman78 · December 4th, 2010, 02:07 PM

Hello.

I was curious as to how you fellow ninjetters are connecting the stock intake runners to the R-0990 filter? The runners are a very soft rubber and dont really see how they would make a good seal.

Also, what are the effects of just putting the filter directly onto the carbs? I am assuming the lower end of the powerband would benefit from the runners being used, right?

Thanks in advance!

scotty · December 4th, 2010, 02:13 PM

You can slid the runners into the filter fairly easy. Ive seen some people put lube of some kind to help seal it. I have a pic of my filtr on the runners in my album. Id post the pic but im on my cell phone. I think with out the runners, it can hurt performance.
Posted via Mobile Device

Alex · December 4th, 2010, 02:17 PM

Here's scotty's picture:

indr · December 4th, 2010, 03:25 PM

What are runners? The black pipes between the filter and the carbs?

Racer x · December 4th, 2010, 03:57 PM

I just mounted the KN0990 air filter directly to the carbs.

JMcDonald · December 4th, 2010, 05:03 PM

Mine are mounted directly to the carbs. AFAIK, people only have used those runners with the filters to keep the filters from rubbing on the frame. Also, AFAIK, runner length would only affect performance if it were changed between the carbs and head, not between the carbs and filter.

HKr1 · December 4th, 2010, 05:23 PM

Quote:

Originally Posted by Racer x

that is the wrong photo . They are pods on different carbs.But I cant find the edit button. But that is the idea.

Nice pic thou, those carbs always get me slobbering

cbowman78 · December 4th, 2010, 05:41 PM

Quote:

Originally Posted by JMcDonald

Mine are mounted directly to the carbs. AFAIK, people only have used those runners with the filters to keep the filters from rubbing on the frame. Also, AFAIK, runner length would only affect performance if it were changed between the carbs and head, not between the carbs and filter.

I didnt even think of that. You are bang on!! I am glad you brought that up.

I would prefer to mount mine directly to the carb.

Thanks for your insight everyone!!!

scotty · December 4th, 2010, 07:24 PM

Thanks Alex!

Eric, how did you get the filter on the carbs with out the unners? I tried doing that, but they would'nt sit on the lip far enuff to be able to tighten down. Have you tried both ways with and with out the runners? If so, did you notice any differnce?

GiGs · December 5th, 2010, 07:07 AM

Quote:

I just mounted the KN0990 air filter directly to the carbs.

Same here, doesn't rub on the frame at all...not even close.

Quote:

how did you get the filter on the carbs with out the unners? I tried doing that, but they would'nt sit on the lip far enuff to be able to tighten down.

The first time I tried to mount the filter onto the carb, it took 30 minutes of pushing and wiggling etc. Very difficult (even used some waterproof grease as lube) - be warned, if you push the filter to hard you can start to bend it. Evenly tighten the clamps and don't over tighten them otherwise the filter will pop off.

Now, I can pull it on and off no problem (after loosening it of course). My advice is to use some grease as lube, make sure the clamps are loose and have the screws for the clamps facing up towards the petrol tank on the sides.

Example (frame, screw, filter, screw, frame):

| * ( ^ ^ ) * |

Racer x · December 5th, 2010, 07:28 AM

OK I found the stuff and took some photos

YA don't over tighten the clamps

Hi GiGs Hows the bike going?

December 4th, 2010, 02:07 PM	#1
cbowman78 ninjette.org member Name: Clint Location: Niagara Region, Ontario Join Date: Aug 2010 Motorcycle(s): 2009 Ninja 250r Posts: 61	R-0990 filter and stock intake runners Hello. I was curious as to how you fellow ninjetters are connecting the stock intake runners to the R-0990 filter? The runners are a very soft rubber and dont really see how they would make a good seal. Also, what are the effects of just putting the filter directly onto the carbs? I am assuming the lower end of the powerband would benefit from the runners being used, right? Thanks in advance!

December 4th, 2010, 02:17 PM	#3
Alex ninjette.org dude Name: 1 guess :-) Location: SF Bay Area Join Date: Jun 2008 Motorcycle(s): '13 Ninja 300 (white, the fastest color!), '13 R1200RT, '14 CRF250L, '12 TT-R125LE Posts: Too much. Blog Entries: 7	Here's scotty's picture: __________________________________________________ Montgomery Street Motorcycle Club / cal24.com / crf250l.org / ninjette.org ninjette.org Terms of Service Shopping for motorcycle parts or equipment? Come here first. The friendliest Ninja 250R/300/400 forum on the internet! (especially Unregistered)

December 4th, 2010, 03:57 PM	#5
Racer x ninjette.org certified postwhore Name: Eric Location: Iowa City Join Date: May 2009 Motorcycle(s): 2008 Kawmeracchi 350 2010 Project X Posts: A lot. Blog Entries: 54 MOTM - Sep '18, Feb '16	I just mounted the KN0990 air filter directly to the carbs. Last futzed with by Racer x; December 5th, 2010 at 06:50 AM.

December 4th, 2010, 05:03 PM	#6
JMcDonald ninjette.org sage Name: J Location: Oklahoma Join Date: Sep 2010 Motorcycle(s): 2008 250R Posts: 771	Mine are mounted directly to the carbs. AFAIK, people only have used those runners with the filters to keep the filters from rubbing on the frame. Also, AFAIK, runner length would only affect performance if it were changed between the carbs and head, not between the carbs and filter. __________________________________________________ Factory Pro Jet Kit, K&N R-0990 Pod Filter, Sportisi VR Black Exhaust, BRT TIS Ignition, White Paint, and 16/41 Sprockets. Soon: Maybe a 37T Rear Sprocket if I get things running like I'd hoped.

December 4th, 2010, 07:24 PM	#9
scotty ninjette.org certified postwhore Name: Scott Location: Carlise Ohio Join Date: Apr 2010 Motorcycle(s): Yahama v star 650 classic Posts: A lot.	Thanks Alex! Eric, how did you get the filter on the carbs with out the unners? I tried doing that, but they would'nt sit on the lip far enuff to be able to tighten down. Have you tried both ways with and with out the runners? If so, did you notice any differnce? __________________________________________________

December 4th, 2010, 02:13 PM	#2
scotty ninjette.org certified postwhore Name: Scott Location: Carlise Ohio Join Date: Apr 2010 Motorcycle(s): Yahama v star 650 classic Posts: A lot.	You can slid the runners into the filter fairly easy. Ive seen some people put lube of some kind to help seal it. I have a pic of my filtr on the runners in my album. Id post the pic but im on my cell phone. I think with out the runners, it can hurt performance. Posted via Mobile Device

December 4th, 2010, 03:25 PM	#4
indr ninjette.org guru Name: . Location: . Join Date: Nov 2010 Motorcycle(s): . Posts: 331	What are runners? The black pipes between the filter and the carbs?

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