FireHead Posted July 9, 2009 Report Share Posted July 9, 2009 i have a friend who has a snowmobile with full drag port shaved heads and some other stuff. he has 44mm carbs bored out to 48's and running it lean as a son of a bitch and takes the filters off because there to restricting. but thats a snowmobile. i wouldnt do it on my quad. if i had an ashfalt dragger maybe but not a mudding banshee. and that setup seams like it would blow. check your information again If he had the proper filters they would not be too restrictive. Air flow numbers for an engine are real easy to figure out. Manufacturer's of filters openly advertice the flow data for each of their filters. Then, all you have to do is pick the correct filters. There is really no downside to running a filter. :geek: Quote Link to comment Share on other sites More sharing options...
blowit Posted July 9, 2009 Report Share Posted July 9, 2009 Remember too that air volume through an air filter will be rated with the filter is "clean" so matching engine requirements to an air filter will usually cause restrictions when dirty. With that in mind, the OEMs know this and you will find out that it does not take much air filter to actually "match" the requirements of an engine. The ones we sell will pass enough air to feed a small block chevy when clean. What is irritating about pleated filters is their drastic drop in performance when dirty. I still use them but have to give the nod to foam filtration. B Quote Link to comment Share on other sites More sharing options...
dajogejr Posted July 9, 2009 Report Share Posted July 9, 2009 Although I haven't used Foam in years...my understanding is this. Clean vs. clean, the gauze/pleated type flow more. Once dirty, the foam will flow more and filter more... Any thoughts on that? Quote Link to comment Share on other sites More sharing options...
blowit Posted July 9, 2009 Report Share Posted July 9, 2009 (edited) Although I haven't used Foam in years...my understanding is this. Clean vs. clean, the gauze/pleated type flow more. Once dirty, the foam will flow more and filter more... Any thoughts on that? Actually, clean, foam and pleated are pretty close and it mostly depends on the filter prep (oil). Foams are just easy to over load and plug in that way. Dirty, foam is the clear winner. The cell network of foam performs nicely. That being said, foam has always been a pain to clean and use thus the reason gauze has been the main choice for years. That and K&N marketing has really pushed the popularity. I should not that this data is only from our in house testing and other tests may have a different opinion. B Edited July 9, 2009 by blowit Quote Link to comment Share on other sites More sharing options...
J-Madd Posted July 9, 2009 Report Share Posted July 9, 2009 These all look like they have air filters. You were there Jarid...you should know, but these were taken off PS website for the race. This is Angel S. Estavez's bike, bike name SIQUIATRIA , built by D&M Out of AZ. This picture was taken from Planet Sand, Gilbert Race 2009. Bike Number: 08 Owner Name: JOSE A. NIEVES SERRANO Rider Name: JOERIEL A. NIEVES LUCIANO Bike Name: BABY MASSA Engine Builder Name: JAVIEL LUCIANO Bike Number: 83 Owner Name: PEDRO MARRERO Rider Name: FERNANDO ROMERO Bike Name: PAPITO'S TOY Engine Builder Name: BETUN PERFORMANCE, D&M Chassis Builder Name: HS CUSTOM Sponsors: MARRERO AUTOPARTS I witnessed at least some of those bikes make passes without filters. I guess they put them on in between races??? And yes they wouldn't think twice about putting in new pistons, trannys, shift forks, etc. after a few passes. They had a pit crew where every member had a job....one guy would be in charge of installing clutches, another in charge of transmissions, another in charge of carbs, etc. ON another note: What do ya'll think about running a K&N without oil to flow more? Just a thought. How much dirt really gets in there in non dusty conditions at the track? Quote Link to comment Share on other sites More sharing options...
dajogejr Posted July 9, 2009 Report Share Posted July 9, 2009 I don't doubt it J... Again, the original poster was talking about no air filter on a mud trail machine. Stupid if you ask me. I have a few buddies that do that....I might try it with my 14 inch filters.... Quote Link to comment Share on other sites More sharing options...
FireHead Posted July 9, 2009 Report Share Posted July 9, 2009 Remember too that air volume through an air filter will be rated with the filter is "clean" so matching engine requirements to an air filter will usually cause restrictions when dirty. With that in mind, the OEMs know this and you will find out that it does not take much air filter to actually "match" the requirements of an engine. The ones we sell will pass enough air to feed a small block chevy when clean. What is irritating about pleated filters is their drastic drop in performance when dirty. I still use them but have to give the nod to foam filtration. B I have been meaning to switch my Banshee's over to foam as soon as the pleated gauze filters wore out............. They just have not worn out yet. You don't see a serious race vehicle running a pleated filter after all.... :biggrin: Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.