anyone know if velosity stacks are worth purchasing? i have no other engine mods or carb mods. all i have is a vance and hins full exhaust. please give me some info.

 

The f3 already comes with them.

 

i mean aftermarket velosity stacks

 

Don't think they make aftermarket for the f3. Link us if they do.
I wish Factory PRO made them, but they don;t.

 

here is the link that i found for velosity stacks. http://www.velocity-of-sound.com/
so noone knows if they are an affective horse power gain? or has put after market stacks on before?

 

f3biker is correct - the CBR F3s already have an optimal setup for smoothing out airflow as it enters the carb. Check out this wikipedia link for how velocity stacks work, and then take your tank/airbox off the bike. You will quickly realize why we are telling you it is probably not going to gain you much with the setup you have.

Additionally, I would really not recommend this be a FIRST mod in any event. You mentioned that all you have is a V&H exhaust, so you might start with jetting your carb. There are some kits from FactoryPro that are really great, and others on the market too. Another option for a quick performance gain is an ignition advance - again from FactoryPro. Either of these options will get you a lot further with performance than adding aftermarket velocity stacks - and an ignition advance is a cheap mod that will be really noticable (try out a +4). Another option is to do a 520 conversion kit and go -1/+2 on your sprockets. Again, this is a VERY common mod that will give you quite a bit more acceleration and low-end power.

If after jetting your carb or doing some other modification that changes your A/F mixture, you find the airflow is insufficient or a dyno reveals that it is significantly hindering your performance, then (and ONLY then) might you try a set of those stacks. I would venture a guess, though, that you will never be in that position.

Good luck with the F3. Cheers!

 

sick thanks for the info. i will probably start with the carbs.