TOPIC:

daveo wrote: Best fart vac available...

I did some work on 2 strokes - 160 horsepower out of 800cc's at 8000 rpm.

We measured by climbing hills and dragracing in deep powder. The strongest solution was ALWAYS the same recipe:
remove snorkel/sound crap on the intake to the air box
cold air into the stock air box
no filter (yes I know that won't work on a bike)
Pods and individual filters were always noticably slower than a stock air box with cold air.

On another note, the runners between the air box and the carbs on my 1100 are insanely long. No runners of any kind, so the carbs actually stick into the air box was always the fastest on sleds. Also, the bigger the air box, the better.

andresmjones wrote: Hello, guys! Thank you so much for such a clear and argumentative report. As far as I know, this post also might be helpful for you. It' would be appreciated if you read that guide overall.

Spam link in his reply. Do not click. not motorcycle related. Reported to moderators.

Moved to problem threads for the Mods to deal with. He has been banned until that time. I didn't see a link.
Steve

650ed wrote:

davido wrote: ................

Agree. In fact, the easiest way to temporarily see the affect would be to just remove the airbox cap and the air filter. That would only take a minute to do and could very easily be reversed once it is discovered that more air doesn't mean more power - just more noise. Ed

Actually thats only half of the equation, an factually incorrect, you've completely ignored fuel. More air in {faster/less restriction} will also mean more fuel which equals more power, to maximize the airbox mods even further, carb mods {jetting, needles and so on} would allow the increase in airflow in the airbox to be utilized and balanced properly with fuel intake, more air and more fuel, equals more power. ..... Finding a way to direct more cool air to the airbox inlet would also be beneficial.. All airbox designs are of course "engineered", but not for maximum performance, they are a compromise for a number of reasons...

If you can cram more air (and therefore fuel) into a cylinder of a given size, you can get more power from the cylinder

Turbo anyone...

I installed vents in my airbox. On takeoff it seemed to help. At speed the vortex effect starved the carbs of air. I went back to stock or as close to stock as can be with 33mm Miks.
Steve

swest wrote: I installed vents in my airbox. On takeoff it seemed to help. At speed the vortex effect starved the carbs of air. I went back to stock or as close to stock as can be with 33mm Miks.
Steve

I have reasonably well jetted and tweaked 26mm carbs on my KZ1000 with pods. Under 65-70mph runs fine. Move to 75-85mph .. ugh turbulence just tears up the fuel mixture unless I squeeze my knees tight to back of the tank and filters. It runs like a spark plug wire fell off if I don't close up the gaps.
Honestly, I'd never put pods on a KZ again if I had to spend so many hours tweaking again.
Just not worth it.
Power increase?
Who knows... I can't feel the difference of +2hp-3hp once past 60hp-70hp while accelerating and doubt most us can.
The chawoo howl at 5k to 9k is super cool.

My air box is open under the seat. That and the V/H is enough noise for me.
Steve