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[Harlee-Htown]

I appreciate everyone's input.  This forum had the best members anywhere!  I picked up the bike this morning from the shop.  I had gotten credit for the Harley Stage I A/C and crappy new cover.  I then had them put the K&N High Flow in.  It uses the stock cover and I am happy with the growl, but not overbearing sound of the Monster Ovals and with the bit of extra torque and HP provided.

Again, thanks to all of my fellow CVO owners! 

[DonT]

FYI, I just installed a Zippers Max Flow (PN 117-448C) for my 08 SERK and it retained the stock CVO AC cover and came with a new crome backing plate, this is the tall filter so it sticks out about 3/4" further than the stock filter.  I know you already went with the K&N, is it the one that fits in the standard AC housing?

[Harlee-Htown]

Yes, the K & N fits completely inside the original cover.  Good luck, ride safe and Happy Holidays!

~Harlee-Htown

[1abastarsmda]

To DonT...I just ordered the one you just installed.  Why are you asking the question?  Doesn't it fit?  Is any of the filter exposed and doesn't look right?  Or is it just that it sticks out further that bothers you?  I know that I have been worried about all of those questions, although someone on here said that it worked fine and was a direct bolt on replacement.

[grc]

To DonT...I just ordered the one you just installed.  Why are you asking the question?  Doesn't it fit?  Is any of the filter exposed and doesn't look right?  Or is it just that it sticks out further that bothers you?  I know that I have been worried about all of those questions, although someone on here said that it worked fine and was a direct bolt on replacement.

From Zipper's:  "HiFlow keeps the outer cover at the same location as stock.  MaxFlow version moves the cover out approximately 3/4" wider due to the extra deep MaxFlow filter element."

Both the HiFlow and the MaxFlow still have the same issue we discussed earlier, where the round outer end of the filter does not support the SE cover which doesn't have a matching round area like the non-SE football covers.  The HiFlow is basically the same as the K&N or SE round filter, and the MaxFlow is 3/4" deeper which means the cover will be 3/4" further outboard (may contact leg) and roughly 1/2"-3/4" of the element will be visible between the inboard edge of the cover and the backing plate.  You will still need to provide additional support between the end of the filter and the cover to avoid possible center nut breakage due to movement of the cover.

Jerry

[1abastarsmda]

I'm not worried if I have to rig some additional support, but concerned about how it looks with part of the filter showing. How does it look that way?

[DonT]

To 1abastarsmda, the reason I asked Harlee about his replacement filter was; I was trying to determine if K&N had released its high performance filter like the RK-3909 or RK-3910 for the 08 and later CVO's or if he had installed the K&N replacement filter for the stock HD filter element.

See attached pic..

[1abastarsmda]

To anyone that has installed a Maxflo air cleaner or probably any other one that changes the backplate, do I need to remove the bracket in the picture below?  The black bracket that is above the throttle body and bolts into each head.  Or does the back plate mount direct to the heads and get rid of that bracket?

[Indenial]

Now I'm really confused. My HD shop manager said the SERG already has a Hi-flow air cleaner and there is not another one that is needed for increased air movement. Just new mufflers and cut the CC out and SERT. Am I missing something?

[SBB]

To anyone that has installed a Maxflo air cleaner or probably any other one that changes the backplate, do I need to remove the bracket in the picture below?  The black bracket that is above the throttle body and bolts into each head.  Or does the back plate mount direct to the heads and get rid of that bracket?

YES REMOVE IT!

Now you say, How do I get to the allen head screws that bolt the bracket to the throttle body?

ABA it's tough!  Harley recommends you remove the tank.

Not necessary, it just takes time.

Loosen the tank front and rear and raise it up an inch.

Use an Allen wrench to remove the bolts.

Yes it's slow, Yes it's a pain but anything beats removing the tank.

Took me about 20 minutes to remove those two bolts.

Just be patient.

Good luck buddy!

And don't over analyze it.

 

[1abastarsmda]

Well, I removed that bracket and what a pain it was to get it off.  Anyway, the Zipper Maxflo is now installed.  

Critique of the part:  As was stated elsewhere, the cover does not make contact with the filter except at the top and bottom, which makes it very easy for the cover to turn.  It seems somewhat stabile after tightening it real tight.  My concern is that because the filter is deeper than stock, and the cover now sticks out further, your leg is resting on the back of the cover and makes the movement of the cover almost inevitable.  Something needs to be put between the cover and the filter at the front and rear to take up the gap, but I just haven't figured out what yet.  Whoever stated on here that they send an adapter with the filter to accommodate this, I sure received no such thing.

Next, because the filter sticks out further, you are going to have some real trouble getting your foot on the right floorboard at all.  Luckily, I have the floorboard extensions that move the floorboards outward by 1" on each side.  Without having these, I would have no choice but to change to a different filter.  If you are going to use this filter, I think you will have no choice but to get the floorboard extensions.

I have a concern, whether founded or not, but on the stock setup and with Harley's stage I, there are 2 hoses that are eliminated by using this kit.  The bolts that had those hoses attached are solid head bolts in this kit.  Maybe someone could shed some light as to whether this is a problem.  I thought those hoses did something like a crankcase breather sort of function and expended excess oil into the filter area.  Is this a problem?

Another item with the install that may be a slight help.  It appears that the stock SE air cleaner cover is wider at one end than the other.  I mounted the narrower end toward the back in hopes that it may give a slight bit of help for legroom.  I don't know if this was the right thing to do or not.  It may not have given any more room, if it's the back of the cover that is cut at an angle.  If that's the case, then I would think that I would have wanted to put that end to the front, to allow for more unobstructed filter opening.  Anyone know which way it should have gone on there?

Put it this way, if I had to do it again, I wouldn't go with the thicker filter.  I'm sorry I went this route, but I don't want to have to wait another week or more trying to exchange this with them.  I'm trying to get my bike back together, get it mapped, and on the road ASAP.

[1abastarsmda]

Too late Silver Black.  I've done more than over analyze already.  I did manage to get those 2 bolts out of there without doing anything with the tank.  I made it happen with just an allen wrench and some persistence.

To Indenial:  I feel your pain.  I was told the same thing you were told.  Honestly, from the look of the setup between what was on there stock, and changing to another setup, I am seriously having my doubts that there was any real problem with the stock setup.  There was no obstruction to the airflow, unless the slots cut in the plastic housing are just not enough to suck in enough air.  But then, this is far from my expertise, so I don't really know if there is a big difference or not.

[grc]

1abastarsmda,

The Harley breather bolts have a nipple to which you attach the rubber hoses that allow the crankcase vapors to be routed into the air cleaner.  With some of the aftermarket A/C kits, they use passages in the plate instead of the rubber hoses to route the vapors back to the throat area of the throttle body.  Therefore the breather bolts don't have the nipple for the hose, but if you look at them you will find they have a drilled passage that feeds directly into the plate.

Jerry

[DonT]

Did you put the thick washer between the filter nut and the AC cover?  You should not have any contact of the filter element with the AC cover.  My unit is tight and does not rock or spin.  As for the breather vents, look at the backing plate provided by Zippers and the bolts provided.  The plate is ported and channeled and the bolts are hollowed allowing the intake to draw a vacuum on the crankcase ports.  

See attached pic..

[DonT]

You can also swap the MaxFlow filter for the HiFlow, simply by replacing the filter element, all the work you performed installing the backing plate will not be wasted.