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  • Another style air filter

    I ordered a different style air filter so my knee has plenty of room.
    RC 0850 The filter is washable.
    Below is a photo.



    I cannot post a photo because there is something wrong on the site.

    You can go here and go to the bottom of the page for a photo.
    http://www.chopcult.com/forum/showth...=51561&page=17

  • #2
    Some sort of photo ban. There's been a photo issue for a few months.
    I quit trying to post pictures when we were on the old site.
    Waaaay too much hassle.

    Comment


    • Lucky
      Lucky commented
      Editing a comment
      Spider... I always have posted photos that are very small file sizes that I convert in Photoshop so as to not be a burden on the site.

  • #3
    Here is a link to your filter.
    https://www.googleadservices.com/pag...gQIDBA_&adurl=

    Comment


    • Lucky
      Lucky commented
      Editing a comment
      Thanks DaveJ. I was hoping to post a photo of the filter on the motorcycle.

  • #4
    Looks a lot like 066V

    Comment


    • #5
      I can see how the other one might be intrusive with forward controls. With my Strat boards I have no issues.

      Comment


      • #6
        I'm not sure that's all too much different I like the ones that are 2in thick rather than two and a half for the same reason knee Knocking

        Comment


        • #7
          I'm looking for a new air intake right now. My pick will be partially dependent on CFM capability. My heads flowed at over 300 CFM and to use a filter that isn't capable of flowing over 300 CFM would be counter productive. In fact I want something that flows in the 350CFM area. I'm not sure what CFM the stock heads can flow because I had already performed a DIY porting job on mine by the time they were checked at the professional porter on a flow bench. With the DIY port job I did they flowed in the 290CFM range. If I had to guess I would say that any filter that flows less than about 250-275 CFM would be counter productive for any R* with aftermarket air intake,ported intake manifold and exhaust. K/N customer service will tell you the CFM capability of any filter they make. You can have the coolest looking and comfortable filter on the block but if it don't flow enough air it isn't worth a shit.

          Comment


          • Lucky
            Lucky commented
            Editing a comment
            Only one thing. It does not need to flow that much air all the time.
            The intake of the carb is the limiting factor. It is 62mm in diameter.
            As long as the air filter is at least the size of the intake you should be good. Even velocity stacks 62mm would do the job. See what I mean?
            Also think about this.. When the carb slide is wide open it is also limiting the air flow. Flowing the heads is one thing. Flowing everything else is another.

        • #8
          Lucky, my heads were flowed with the intake manifold so the restriction (limiting factor) is already calculated into the CFM number. You are not taking into consideration the restriction value of the filter. I checked with K/N and a 6x3 round k/n RA 067V that has a 65mm flange is capable of flowing approx 330 CFM. That CFM is just over the flow capability of my intake and heads at WOT. That filter is also substantially larger than the throat of my HSR45 carb. A velocity stack also draws air in differently than a standard style air cleaner. If it is a filtered velocity stack it is also restricted somewhat depending on the filter style. It also draws air straight in vs around a corner to enter the intake. Air does not like turning corners. I think I'm gonna end up with an air cleaner something like a Kuryakyn Mach 2 that draws air around the circumference and also thru the end cap like a velocity stack. It should be the best of both. When checking specs on filters, most filters will tell what HP they will support, If you have the K/N part number Tech support will give the CFM number.My bike was dynoed with a 330 CFM capable filter. I'm not taking any chance of loosing any power due to possibly choking it down at the filter.

          Comment


          • #9
            davej iare our 066V's OK in terms of CFM? stage 1 exhaust, jetted. i do have a 2 in oval on one bike. has more CFM, looks cool has the 60's 70's look

            Comment


            • davej
              davej commented
              Editing a comment
              My guess is yes but would have to call K/N tech support to verify how much they flow. The 067 is capable of 330 CFM Per K/N tech support. The 067 is 3" thick and the 066 is 2" thick so simple math says you loose about 1/3rd that would bring you to approx 220 cfm. The 066 is just a hair larger [email protected] 6" than the [email protected] 5.87" so that would add a couple more CFM. I'm probably getting a little particular on mine due to my build. I may also be a little high on my guesstimate of 250-275 cfm for stock flow.

          • #10
            Here is a good read on sizing for any particular engine
            https://www.onallcylinders.com/2013/...r-size-engine/

            Comment


            • Lucky
              Lucky commented
              Editing a comment
              Thanks for the info Davej. I had a Kawasaki 1500 v twin that had a very restrictive cotton paper air filter element and the intake track had 8 90ยบ bends in it.
              I got rid of all that immediately. LoL!!!

            • davej
              davej commented
              Editing a comment
              I'm no expert by far but I have done alot of research on the subject of air flow when I did the head porting. That is how I decided to go with an old timer hand porter rather than CNC porting. I spoke to Shane from SS custom Cycle the other day and it sounds like they have done a few big bore R*'s All they way back to when Orient Express was selling kits. He told me that they had a hard time getting to 90 hp regardless of who's kit was installed. That tells me I'm sittin pretty good with my build and made the right choice with the hand ported heads. That along with the other reaserch and choices I made in the process.

          • #11
            I know they flow way more air than the factory air filter cuz I had to rejet immediately

            Comment


            • midnitmike
              midnitmike commented
              Editing a comment
              Yeah as soon as I slapped on the 066 it was obvious I'd have to do a re-jet if I wanted to keep it on there. I'd already installed the V&H short shots and the combination of the two was more than it could handle.

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