Cone air filters - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 38 (permalink) Old 07-30-2015, 01:44 PM Thread Starter
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Cone air filters

Alright so once again forgive my ignorance. I have read the ear shave procedure and kind of understand it, but maybe I am missing something.

I have basically at this point replaced the entire bike. and the only thing I had a friend do is the carbs (they scare me and he did them for cheap).

But he is saying if I dont want to put the air boxes back on the sides (ears) I could just put cone filters on the carbs where the boots are and I would be fine.

Would this be a problem? if so what would, or could happen if I were to do it this way.

We just got it running yesterday, and rode around without the boots, or air boxes on to see how she did and she is running strong. I know I cant run her like that, it was just a test ride.

Thanks in advance for the feedback!
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post #2 of 38 (permalink) Old 07-30-2015, 01:58 PM
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What your friend is describing is the ear shave procedure.

If you are using stock pipes then you can probably get away with using pod filters without adjusting the carbs, however depending on elevation, etc, you may need to re-jet the carbs to compensate as described in the ear shave procedure.

1986 Kawasaki Vulcan 750
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Duralast Gold ETX15 AGM Battery
Coastered & Shaved
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Balance Dampers Replaced
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post #3 of 38 (permalink) Old 07-30-2015, 03:49 PM Thread Starter
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Thanks tanner!

Also if anyone knows. I am reading a few posts about the ear shave, and using cone filters. I am getting the sense that the K&N rc2340 are the only ones that would work from what I am reading.

However I have called about 10 part shops trying to find them and no one has them in stock.

Would any cone filter with a 54mm mouth work (ive read you can squeeze on a 52mm too) , or does anyone have any suggestions that I can find at auto zone/advanced autoparts/ o'reillys?

Thanks again!
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post #4 of 38 (permalink) Old 07-30-2015, 04:08 PM
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Amazon has em: http://www.amazon.com/RC-2340-Perfor...eywords=rc2340

The other cone filters do seem to have issues with a lip in the filter causing airflow restrictions, there was a post on how to mitigate that I believe if you have to go that route.

1986 Kawasaki Vulcan 750
NGK Iridium Plugs #7803/DPR7EIX-9
Duralast Gold ETX15 AGM Battery
Coastered & Shaved
TOC MCCTs
Metzeler ME880 [110/90-19, 170/80-15]
Balance Dampers Replaced
Tuxedo Mod
Rebuilt Forks w/ Progressive Springs
V&H Cruzers
VN750.com Grill Cover
Meanstreak Seat
Emgo 23-92411 Handlebars
MOSFET FH012AA R/R


1990 Kawasaki Vulcan 750

1998 Honda VFR800 FI

2014 Honda VFR800F

1989 Pontiac Firebird Formula 350
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post #5 of 38 (permalink) Old 07-30-2015, 04:28 PM
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the uni pk-92's work but are more cylindrical shaped. they will touch the bottom of the tank, but they are flexible enough that its a non issue to me

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post #6 of 38 (permalink) Old 07-30-2015, 05:04 PM
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Best thing to do is go with the K&N. As mentioned above the connecting opening is different.

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post #7 of 38 (permalink) Old 07-30-2015, 05:14 PM Thread Starter
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Much appreciated everyone!

I ended up finding a place that has them. Hopefully this time tomorrow I will be cruising. I still have the coaster mod to do (most likely be done in the next week or 2) and she will be how I want her to.

I will post once I have that done and everything done to her once I get it.

As always you guys have been a big help!
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post #8 of 38 (permalink) Old 07-31-2015, 11:52 AM
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i think you will need to re-jet the carbs or she will run lean with cone filters on, you can check plug colour if its white dont carry on riding it

Vn 750 A2 1986 rebuilt engine, crank shaft, half casing,shell bearings,con rods,rear cylinder head,oil pump,water pump ,(had ceased bearing rusted up),tie bar upgrade,clutch basket drilled,front cylinder cam chains,toc springs,stator,shaved, rectifier,agm battery,solenoid ,starter motor (used) re-spray ongoing.
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post #9 of 38 (permalink) Old 07-31-2015, 12:59 PM
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Quote:
Originally Posted by michiganteddybear View Post
the uni pk-92's work but are more cylindrical shaped. they will touch the bottom of the tank, but they are flexible enough that its a non issue to me
X2

The Uni PK92 works fine, no mods required, and several of us have done the earshave with no re-jetting on stock pipes. Jets really only come into play when the exhaust is opened up.

A pair of Uni filters is less than half the cost of K&Ns.

The Uni does touch the tank on the left side, but it's not bad. I didn't shim my tank higher until a year later. Didn't really need to, but I was chasing a noise and wanted to eliminate that as a possibility, and that wasn't it.

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post #10 of 38 (permalink) Old 08-01-2015, 08:18 PM
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I went with EMGO filters. Way cheaper.
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