Hi. I'm thinking of getting rid of my air box and fitting 4 separate cone type filters. Yea or nea? It is a 1992 cbr1000f. Thanks.

 

Most people don't understand that an air box is a highly engineered part of the bike. So unless you are prepared to do before/after dyno runs and mess with your jetting I'd vote for nea.

With individual cones you will decrease intake restriction but also increase noise, change the nature of the flow (laminar/turbulent), and increase the temperature of the intake charge. You will also loose any ram effect engineered into the OEM intake system.

Probably best to stick with a foam or gauze filter and/or drill holes in the lid.

 

How good are you at rejetting and tuning carbs? That is 100% required if you remove the air box.

 

Thanks for the replies. I think I'll stay standard.

 

Good choice, saves me from replying 'nay' ...................oops! Too late

LimitedSlip is on the money with his reply.

Cheers, SB

 

Just to confirm - That's a nay !
We've had members who've done it and regretted it soon after, as the amount of jetting, rejetting etc etc is far more trouble than it's worth AND IN MOST CASES THE BIKE RUNS WORSE THAN BEFORE.
Better bet would be to fit a K&N filter.

 

The 1kF was the fastest production bike before the 1100xx. Depending on what source, 160 to 176 mph with factory air box. How much faster do you need to go? Honda did their best to engineer the air box for best results for top speed and be very streetable.
Another nah...

 

The biggest thing an airbox does is provide the same consistent airflow to the carbs despite changes in weather (winds, rain, etc). That, in and of itself, makes an airbox pretty damned convenient, as far as rideability and tuning goes.



The other problem is that individual pod filters tend to cover up vacuum ports that are on the edge of the venturi... you'll notice a lot of people will say the dual k&n pod filters work (and they do) because they fit completely over both venturis and do not block any ports, so you have to do something to get around that on individual pod filters.

Oh, and they also make your garage smell like gas.



That said, I run them on my bandit.... my father in law runs them on his KZ (which runs like an absolute animal) and I had them on my wife's GS500 (also, an absolute blast to ride).

If you like tinkering/wrenching and understand carbs, have at it. If you want convenience, don't.

 

I remember the shop where I bought my first CBR1000F (back in 1987!) telling me the airbox was a bit on the small side compared to other big bikes of the era (FZR1000 etc).

 

Again, thanks to all. Good advice. Much appreciated.