powernow mod

mattskn · Mar 29, 2011

I did this mod to a 04 yzf250 I harescrambled for a half season a couple years back, and it made a big difference in the low end power, I was just thinking it wouldnt hurt to give it a try on the warrior. Any of you guy try it to yours.
http://www.thumperfaq.com/downloads/JamesNOW!.pdf

beastlywarrior228 · Mar 29, 2011

hmm try it and give some feedback id buy one

duneracerweston · Mar 29, 2011

Ya try it idk if I could use it will my Carb set up

mattskn · Mar 29, 2011

It worked great on the 250f, ill give it a try tomarrow.

hawkster0001 · Mar 29, 2011

ive seen those alot for snowmobiles called a power wing, http://www.hiperf.com/acatalog/Boyesen_Power_X-Wing.html

mattskn · Mar 29, 2011

Ill get back to you guys. After I cut the grooves in the intake I used a little jb weld to secure the wing in place, a X is possible.

elwood · Mar 30, 2011

looks like it goes before the carb and the 1mm plate almost touches the slide

mattskn · Mar 30, 2011

got it in and fired up, the revs feels a little more crisp, havent had a chance to ride yet, later this afternoon.

DeadLastRacing · Mar 30, 2011

so your suppose to split it horz with the carb so at half throttle the air is reduced down to just the lower half of the boot. It directs the gas/air flow a bit better. Interesting. Why does it work? Like why will the reduction give you added HP?

mattskn · Mar 30, 2011

The POWERNOW increases air velocity by cutting down on destructive, turbulent air entering and exiting the carburetor. At half-throttle, the air entering the carburetor is very inefficient, because it partially hits the slide and begins to tumble inside the throat of the carburetor. The POWERNOW'S septum, also known as the power blade, splits the air and increases forward momentum. .

mattskn · Mar 30, 2011

Im holding it to the side its supposed to be horizontal to the ground.

DeadLastRacing · Mar 30, 2011

mattskn said:
the air entering the carburetor.

exactly, your mod only cuts the air exiting the carb.

hawkster0001 · Mar 30, 2011

DeadLastRacing said:
exactly, your mod only cuts the air exiting the carb.

lol, engineering difficulties

mattskn · Mar 30, 2011

They also make a powernow for the filter side of the carb, ill get on that tomarrow. Do a google search there is alot of info on powernow:tup:.

Deuce · Mar 30, 2011

I installed the powernow on my yz426 when they first came out. No extra power, just the throttle was a little more crisp and responsive below 1/2 throttle.

hawkster0001 · Mar 30, 2011

ok i see what you did now, for the best result you would probably want to do it on both sides

mattskn · Mar 30, 2011

Thats how the warrior feels, I look at it this way any free improvement is worth a half hour..:tup:

deuce said:
I installed the powernow on my yz426 when they first came out. No extra power, just the throttle was a little more crisp and responsive below 1/2 throttle.

bomber315 · Mar 31, 2011

hmmm at first i was going to say it would never work. but now i see what the concept is... interesting... too bad it doesnt seem to do much :/ i suppose if you had a bunch of "little bits" you will end up with something very noticable..... secretly i want to build a warrior that people get off of and think "holy **** that warrior was a mean mother f'er" but in reality it will always be a warrior.... good for trail riding and the ocassional all out beating, or an all out beating and the ocassional trail ride... but never for drag racing banshees or out jumping dirtbikes

mattskn · Mar 31, 2011

What he said:tup:

bomber315 said:
hmmm at first i was going to say it would never work. but now i see what the concept is... interesting... too bad it doesnt seem to do much :/ i suppose if you had a bunch of "little bits" you will end up with something very noticable..... secretly i want to build a warrior that people get off of and think "holy **** that warrior was a mean mother f'er" but in reality it will always be a warrior.... good for trail riding and the ocassional all out beating, or an all out beating and the ocassional trail ride... but never for drag racing banshees or out jumping dirtbikes

98-warrior · Apr 7, 2011

is there any update on the back side one. i made one for my boot infront of the carb.

powernow mod

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