Pros and Cons on Pod Filters for Carbed Monsters

[memper]

Im using aluminum v stacks from Velocity of Sound, filtered with v stack "socks" from Outerwears. According to micron density they have the same as a K&N pod filter.

What I dont get is when I see big expensive custom HD engines with a single unfiltered v stack sticking out the side..
I wonder how often they need to fix/replace the cylinders?

[koko64]

Yeah, fashion over function.
There are custom shaped V stacks on serious drag bikes to reduce turbulence. They look like a cross between a wind sock and a V stack.
A buddy has a 2000 XL1200S. It is the rare model with oem twin plug heads, special ignition, hotter cams and hi comps from the factory. It's the last of the carby models, and it's got a nice HSR42 replacing the oem CV carb but it has a stupid Hypercharger air cleaner on it. Ah, reduce airflow, increase turbulence and add 5kg of chrome.
Boy do I give him heaps!

[Rudemouthsky]

Yeah, fashion over function.
There are custom shaped V stacks on serious drag bikes to reduce turbulence. They look like a cross between a wind sock and a V stack.
A buddy has a 2000 XL1200S. It is the rare model with oem twin plug heads, special ignition, hotter cams and hi comps from the factory. It's the last of the carby models, and it's got a nice HSR42 replacing the oem CV carb but it has a stupid Hypercharger air cleaner on it. Ah, reduce airflow, increase turbulence and add 5kg of chrome.
Boy do I give him heaps!

 

Im using aluminum v stacks from Velocity of Sound, filtered with v stack "socks" from Outerwears. According to micron density they have the same as a K&N pod filter.

What I dont get is when I see big expensive custom HD engines with a single unfiltered v stack sticking out the side..
I wonder how often they need to fix/replace the cylinders?

Not many but there are a couple on this board that run no filter...the Motocreations guy is one. I certainly wouldn't chance it..

[Rudemouthsky]

Koko

Looking at the TPO kit, it specifically states that it's intended for FI bikes. What is this carbed TPO kit you speak of?

Also, are these kits designed to protect the air jets? (I thought I'd read that the blue stacks leave the main and slow air jets exposed)

Thanks

[memper]

Koko

Looking at the TPO kit, it specifically states that it's intended for FI bikes. What is this carbed TPO kit you speak of?

Also, are these kits designed to protect the air jets? (I thought I'd read that the blue stacks leave the main and slow air jets exposed)

Thanks

Can't answer on the TPO subject but it is true that the blue stacks that come with FCR kits do not cover the two exposed jet holes on the venturi.
Funny tangent: when I got my FCR's last year I thought it would be sweet to make my own pod filter v stack. So I trimmed the flange on my pods, got the blue v stack ends to fit perfectly in the pods, got em glued up....only to the realize the blue stacks didn't cover the jet holes. I should've put a post in Tutorials on how to effectively ruin a pair of pod filters.

[koko64]

I was referring to the kits Brad linked. I meant they looked like TPO kits, but for carbs. I emailed TPO a few years ago and they said that they didn't make a kit for old carbed bikes.
I think the K&N stacks for pods from Powerbarn or these KTM stacks would be good, but better check the latter fit tandem unless you are going the split FCRs on short manifolds and even then you gotta fit the frame and under the tank. Check the specs for sure. They look like they protect the air jets from here.
That's why I mentioned the el cheapo idea of alloy spacers and the blueys. Wouldn't be hard with the right gear. The spacers would have passages to protect the air jets so only filtered air gets to them.
The Powerbarn items are longer but ready to go.

[koko64]

Can't answer on the TPO subject but it is true that the blue stacks that come with FCR kits do not cover the two exposed jet holes on the venturi.
Funny tangent: when I got my FCR's last year I thought it would be sweet to make my own pod filter v stack. So I trimmed the flange on my pods, got the blue v stack ends to fit perfectly in the pods, got em glued up....only to the realize the blue stacks didn't cover the jet holes. I should've put a post in Tutorials on how to effectively ruin a pair of pod filters.

Everyone's done somethin'. If they haven't, they lied!

[brad black]

http://www.ebay.com.au/itm/PX-air-filter-Keihin-FCR-carburetor-Ducati-Monster-SuperSport-SS-M900-flatslide-/201036462453?pt=UK_Motorcycle_Parts&hash=item2eceb4f975&_uhb=1

[ducpainter]

That looks like the filter in my 996,

Not the same brand.

[koko64]

Looks like an in airbox filter, but doesn't seem to work that way with the air jets still exposed with no rubber boots to the airbox. Maybe the foam seals the holes to the airbox. Two into one set up is trick looking. I like being able to use the blueys. My Gixxer has a PX filter.