HurricaneFlow Air Cleaners

[jimmyheadgear]

Has anyone tried this setup yet?

http://www.nrhsperformance.com/partscarburetion.shtml#Carb%20accessories

I don't know anything about carbs or air cleaners so, how hard is it to modify the breather the way they suggest?

Here's the quote from the page.

Note: to maximize power and reduce carbon build-up, these air cleaners do not route the blow-by from the breathers into the intake tract the way the stock air cleaner does. As such, an alternative breather arrangement is needed. There are many different ways to go. We recommend routing the breathers to a small filter (to absorb the moisture component) mounted underneath the bike, or to a catch can. Also, Sportster models will require a carburetor support bracket. For the hardware needed to do these things, please see "General Accessories for Carbs and Air Cleaners" (http://www.nrhsperformance.com/partscarburetion.shtml#Carb accessories) below.

[Nightboy]

I got this AC setup. Bolts up direct to the CV carb, or the the HSR carb with a small adaptor plate and still fits under the stock ham can. Best AC on the market as far as Im concerned. Both K&N filter elements are HUGE! Choose from either a 2" or 3" thick version. I use a Drag Specialties bracket/breather assembly.

[jimmyheadgear]

Nightboy

Did you modify your breather?

[Nightboy]

Nope, The AC itself doesnt connect at all the the breather. The crankcase breather sits behind the AC out of sight. I used Drag specialties part # DS-289126

[Joshuasws6]

I also have this setup. I posted several pictures on webshots. I just uploaded them a few minutes ago, so it may take a bit for webshots to upload my album. It is listed in the "Joshuas Harley 2" album.

I took a slightly different approach to the breather. Its not as "clean" as some, but works for me. I mounted a chrome breather the front upper motor mount and ran stainless steel braided line to it. I'm not concerned about oil dripping on the exhaust (if it did, I could always mount the breather on the other side). When I took off my SE setup - after 1300 miles there was NO oil accumulation in the carb neck, nor in the littler rubber breathers that I could see. I have ridden the bike relatively aggressively for the last 1000 miles so dont expect to see any appreciable oil blow by.

The album should be available shortly. The order of the pics/install is "Harley 1" through "Harley 13". If you cannot upload / enlarge the pictures, then try again a bit later.

http://community.webshots.com/user/joshuasws6

Direct link to the album (may or may not work):

http://community.webshots.com/album/252608383VJgpSS

[jimmyheadgear]

Joshuasws6


Nice bike! Is that the 2" filter?

[Joshuasws6]

Thanks for the compliment!

Yes - its the 2". It only sticks out maybe another 1/4" to 1/2" compared to the S.E. I dont even notice it when riding and I'm pretty short (5'8").

[dabronco]

How does it perform?

[Turbota]

Josh ...

I really like your formula ... Here is a couple of links to my old TA:

http://img.photobucket.com/albums/v248/Turbota/TALeft.jpg

http://img.photobucket.com/albums/v248/Turbota/TARear.jpg

http://img.photobucket.com/albums/v248/Turbota/TAEngine1.jpg

http://img.photobucket.com/albums/v248/Turbota/TAEngine3.jpg

[mikeLI_77]

Its not as "clean" as some, but works for me. I mounted a chrome breather the front upper motor mount and ran stainless steel braided line to it.


that's pretty cool. that braided line makes it look good. big difference over the rubber line

[Joshuasws6]

dabronco - it seems to perform very well, though its just a seat of the pants observation. I also installed it along with a set of Bubs jug huggers, so it would be difficult to determine its contribution, even on a dyno. The bike definately feels stronger with the AC and the new exhaust over my previous SE AC and pipes. I will say this - the Bubs are MUCH louder than the SE's.

Turbota - nice looking car. I actually dont own the Formula anymore. I have a 2002 SOM WS6 now (think you can see it in one of my pictures behind my Harley).

Mikeli - thanks. I just ordered a length of braided hose from JPcycle and cut it to match the rubber hose I cut as a template.

[dabronco]

Thanks for the input. I'm running the stock ham can with a k&n filter. The air inlet to the can seems kinda restrictive, and I would like to modify it without changing the cosmetics. The filter itself is something like 3'' wide, but the air horn going into the filter housing is more like a 2 1/2 ''by 3/4'' rectangle. That's 1.875 square inches. I think that's smaller than the carb bore.

[mikeLI_77]

ok i have been thinking about getting this as well. but the question is I only have the Stage 1 kit. Vance & Hynes straight shots, screaming eagle filter kit and the carb rejet. I don't have any high performance cams or high compression pistons or oversized pistons or anything else but that for performance. Will this air filter make much of a difference for me over my screaming eagle filter i have? i know it's better but im not sure since i don't have all the other performance mods if it will make much of difference over what i have? I don't plan on doing any form of other performance mods in the near future maybe some day i will. Also i already have a jet kit will i need to rejet if i install this filter again?

[aswracing]

Mike, I did a ton of dyno testing on the HurricaneFlow yesterday, more than 80 pulls. Part of this testing was comparing it to something that's real similar to a 91-03 SE unit (Buell S2 unit, uses the same SE element and a ham can cover, plastic back plate though). It was worth 3-4 hp on a 90hp bike, which makes it a bargain in terms of hp per dollar at that power level. Each hp gets more expensive at higher levels.

Didn't test a bike like yours, but I'd expect maybe 1 or 1.5hp over your SE unit on that mild of a bike. Id love to sell you an air cleaner, but honestly there are other things you can do that would priobably have a better hp per dollar return than this. Now if you had your stock air cleaner, or if you had an 04-05 SE air cleaner, it'd be a different story. But the 91-03 SE unit isn't a bad piece and won't really hold you back much until you start getting over about 80hp.

[aswracing]

One thing though ... if I were you I'd definitely think about getting the blow-by out of the air cleaner. It's bad news.

[thunderpaw]

At what point is the '04/'05 SE filter element a liability for a Stage I motor?

Kim

[mikeLI_77]

thank you for the feedback aswracing. if i ever decide to do the performance mods i'll definetely get back to you on buying one of these filters. i'll look into the blow by relocating units right now.

[aswracing]

Thanks, Mike.

Kim, on a measely 65hp bike, the Hurricaneflow tested out to a 2.5hp advantage over the 04-05 SE unit ...

http://www.nrhsperformance.com/images/drhurricaneflow.gif

[thunderpaw]

Thanks!

Kim

[xl1200r]

At what point is the '04/'05 SE filter element a liability for a Stage I motor?

As soon as you install it!!! I have a Stage 1 1200 (2004), and am in the process of buying new pipes. The only one I've been able to try was a thunderheader. With this setup, I gained maybe 1 hp at the top of rev range over the SEII mufflers. But get this. We took off the aircleaner and gained 7 HORSEPWER . I know you should loose some power throught he filter, but 7 is a lot in my mind. I can't say anything about the Nallin kit because I haven't used it, but on paper it works. Bigger filter - WAY bigger. Even the 2" unit is twice as wide the stocker, with a much better filter. Personally, I went with a Pro-Serices Hypercharger (I really like the looks, and I don't know that I utilize all of flow that the hurricane will provide.)

A message for Justin - Air intake seems to be big subject in this forum. Seeing that you have the resources, do you think you could do an aircleaner shootout? On something like a stage 1 1200 machine for a baseline? Maybe put your hurricane unit up agaist HC pro, XR Forcewinder, Ness big sucker, S.E., etc. Would be intrested to see the results.

[shooter]

I have just finished installing my Hurricane Breather and I have to say its a top quality product. Every bike that I have installed a bigger than SE filter, I have picked up 2 to 3 HP all the way up the curve above 3000 rpms. I haven't dynoed this breather yet, but I know it will do the job. You don't need cams and head work to benefit from a bigger filter.

Shooter

[LuxBlue]

Yo Josh, sweet setup!! I'm running the SE Hi Flow filter now but may want to swap to the Hurricane at a later date. I have never noticed any oil residue in my carb intake either. Where did you get that little breather element and also the braided SS line?

[barry1967]

Whats the deal with these ACs? Are they $99 as posted here: http://www.nrhsperformance.com/newproducts.shtml or $199?, as posted here:http://www.nrhsperformance.com/partshurricaneflow.shtml#HurricaneFlow%20Air%20Cle aners%20for%202004-up%20Sportsters

I just noticed that too. an introductory price would be nice to grab .

[LuxBlue]

Zingy, the ad says STARTING at $99, meaning a cheaper version for another bike probably. It looks like the 2" element is $199 and the 3" is $219 for 2004 and up Sportys. I love Josh's setup with the braided line and small filter element for the breather!

[thunderpaw]

If you notice, the "starting price" is $99. Made me look twice,too. Aaron probably has at least that much in them...but it had me reaching for plastic when I came across it. Oh well...

Kim

[Joshuasws6]

Yo Josh, sweet setup!! I'm running the SE Hi Flow filter now but may want to swap to the Hurricane at a later date. I have never noticed any oil residue in my carb intake either. Where did you get that little breather element and also the braided SS line?

Thanks for the compliment!

I Got both from jpcycles.com:

Breather was part # 4300150. Will have to look up the SS line number.

edit - braided hose - #7200300

[aswracing]

OOPS! Thanks for the heads-up, guys. I was offering a version of the Buell S2 air cleaner without the element (a $45-$50 item depending on size) since stock S2's came with a Screaming Eagle element. Then I went to go put it together and test it and I realized the SE element doesn't fit my backplate very well, way too loose. So I dropped that option. But I forgot to change the price reference on the "New Products" page.

[Art Christofersen]

As soon as you install it!!! I have a Stage 1 1200 (2004), and am in the process of buying new pipes. The only one I've been able to try was a thunderheader. With this setup, I gained maybe 1 hp at the top of rev range over the SEII mufflers. But get this. We took off the aircleaner and gained 7 HORSEPWER . I know you should loose some power throught he filter, but 7 is a lot in my mind. I can't say anything about the Nallin kit because I haven't used it, but on paper it works. Bigger filter - WAY bigger. Even the 2" unit is twice as wide the stocker, with a much better filter. Personally, I went with a Pro-Serices Hypercharger (I really like the looks, and I don't know that I utilize all of flow that the hurricane will provide.)

A message for Justin - Air intake seems to be big subject in this forum. Seeing that you have the resources, do you think you could do an aircleaner shootout? On something like a stage 1 1200 machine for a baseline? Maybe put your hurricane unit up agaist HC pro, XR Forcewinder, Ness big sucker, S.E., etc. Would be intrested to see the results.


Man do I second that! How bout it Justin? Or anyone else? Please?:smilerev:smilerev:help1

So far I have spent an hour or two looking for just that info. Even the baseline bike is right. (1200 stage one 04 with decent pipes.) Any help sure would be appreciated.