Topic: K&N pod filters vs velocity stacks

[aminemed]

Hi

I'm running K&N pod filters on my 750 K2. I'm wondering if it would run better with aluminium velocity stacks. I'm having some trouble to get the proper air/mixture ratio. I thought that maybe velocity stacks configuration could help. What's your thoughts ?

thank you

[Yamahawk]

Actually, yes velocity stacks work very well, and better than pods. The stock airbox intake rubbers are actually like a velocity stack, and that's why they work well. Here is a sample of a velocity stack with a UNI filter built in, I haven't used them, but they look really nice and should suit your needs, along with supplying a filter... which is what most velocity stacks lack.
https://www.ebay.com/itm/Velocity-Stack-39mm-Honda-CB500-CB550-CB750-Suzuki-GS550-with-UNI-air-filter/232540818302?hash=item3624834b7e:g:tYoAAOSwoVNZ9Lna

Charlie

[aminemed]

i need 4 of these, so i guess it is around 160$ ! that's expensive

[Don R]

 You may be about to get a lecture on the virtues of stock airboxes which are better even on Kawasaki's as I recently learned from a bike racer of all folks.

[aminemed]

i've read a lot and i totally agree on the far superiority of honda engineers stock airbox. Although before ditching my actual setup i would like to keep on trying

[Yamahawk]

You may be about to get a lecture on the virtues of stock airboxes which are better even on Kawasaki's as I recently learned from a bike racer of all folks.

Hehe yeah Don, but that would be for pods lol.... there are 'velocity stacks'
But... here is the Disclaimer: RUN... WHILE YOU STILL CAN! And always look both ways before you cross the road.. and don't fidget when I talk to you... aaand STOP TRACKING MUD ACROSS MY NICE CLEAN FLOORS..!
I would never suggest that someone remove their stock air box, it is a very well designed piece of equipment, that the motorcycle manufacturer spent countless hours of design and research to get the flow correct for the carburetors they used. Remove it at your own peril!
Now... how's that for a CYA?
Charlie

[aminemed]

How is this plug for you ? It seems to me that the bike os thirsty

[Yamahawk]

are those all the same plug in those three pictures? The plug isn't running rich, but is burning clean. I think I see some tan below the tip about 1/8" down the ceramic. I would say it might be a tad lean, but its not bad. How does it run, and are you all stock in exhaust and air box still?

Charlie

[aminemed]

Yes same plug, pulled it to see the colour. No running k&n filters with a 4 into 1 exhaust. Bike was too rich and fouled plugs now its a bit too lean i feel it thirsty when i ride it, not as powerful as before, lacks some gas..a racing mechanic tolde that velocity stacks are better than k&n filters

[Yamahawk]

What clip position are your needles set at? If it is on the fourth from top, you may need a larger main... if not, move it to 4th clip from top and see how it runs. Thats the next to bottom clip position.
Charlie

[aminemed]

Thanks !
Still open for any advice on velocity stacks

[gareyc]

I was running cheap pods which I had running decent, then switched to K&N pods and had those running pretty well for several months. I recently switched to velocity stacks and without changing anything the bike still runs fairly well but I haven't had a chance to ride it much and definitely haven't had time to tune it. From what little I have ridden it, maybe 30 miles, the stacks don't seem all that different (again, haven't had a chance to dial it in) so take that for what its worth. I'm hoping to have some time over the next couple weekends to get it just right and report back.