stance on boost bottles and reed spacers and power now valves

[crusty4365]

ok theres a couple intake modifications im not sure are signifigant in any REAL gain or benifit..

1 boost bottle - give me reasons why it works and why it doesnt and how its supposed to work
http://www.wppracing.com/images/boost2600.jpg

2 reed spacer - give me reasons why it works and why it doesnt and how its supposed to work
http://www.jokersracing.com/images/products/Reed Spacers.jpg

3 power now or power now plus valves- give me reasons why it works and why it doesnt and how its supposed to work
http://www.scaryfastracing.net/images/pnp-info-images/pnp-diagram-1.jpg
http://www.cyclegear.com/images/offroadacc/Scary Fast power now_310x310.jpg


use real scientific data to prove or disprove all 3 of these "performance enhancers"...

please explain how each one works and state why it works or doesnt work

thanks lets get some results i think this thread will clerify whats real and whats not real for most riders!

 

[XxFASTER-BLASTERxX]

yea i wanna know about one and three

 

[crusty4365]

i think the power now valves are the best out of the three but until we get some ppl who are smarter than us in here we wont know

 

[dirtyblaster]

for power now it makes the air into a circular motion and crap,it does not seem to work for some reason.

 

[blasterquad]

The boost bottle is not worth byeing. it takes the gas that goes into the engine and stores it in the bottle so it dont get over mixed i got one but i dont think it was worth it.

 

[blaster82]

my friend had a power now valve on his yz85 and i rode it before and after and once he put it on it felt like you were flying through the gears, as soon as you touched the throttle it took off

 

[quadboy22p]

so all of them have to do with airflow and reducing turbulance. i go to school for this ish. so the reed spacer is used 2 increase the velocity of the air going into the motor. it gives you added torque however takes away from top end because of the increased distance the air has to travel. the boost bottle is made for 34mm pj carburators because they have a problem with the plate shutting and then there being a hesitation from closed to wot on shifts. because of extra air getting trapped in there. the power now thing just keeps the flow from getting turbulent spots. they take away from the energy of the air flow. from my experience reed spacers work well on mild modified motors. they are needed for 30 mm carbs. i was told not to use it on a more mods b/c it takes away more than it gains. as for the powervalve now thing it technicaly works however its not worth buying. its like those stupid tornado things for cars that claim all these gains. but really they just dont' do much of anything.

 

[regal81455]

How you install your reed spacers determines what kind of effect it has on your performance. See below...

Putting the spacer between the reeds and the engine moves the powerband lower to improve bottom end HP. The thicker the spacer the lower it will move the powerband.

Putting the spacer after the reeds and moving the manifold back moves the powerband higher and helps to improve the mid-range and top end power. The farther back the manifold is, the higher up it moves the power band.

Hope this helps...

 

[crusty4365]

How you install your reed spacers determines what kind of effect it has on your performance. See below...

Putting the spacer between the reeds and the engine moves the powerband lower to improve bottom end HP. The thicker the spacer the lower it will move the powerband.

Putting the spacer after the reeds and moving the manifold back moves the powerband higher and helps to improve the mid-range and top end power. The farther back the manifold is, the higher up it moves the power band.

Hope this helps...

sooooo what if i got 2 huge reed spacers and put them on both sides of the reed valve? that would make my sh*t wild rite?

 

[yamblasteracer35]

yea i was wonderin the same thing

 

[quadboy22p]

it is supposed to make the intake longer and increase the velocity of the air. it goes between the maifold and cylinder. it doesn't really matter where you put it either way it is between the carb and cylinder increasing the runner leangth. if you really want intake mod gains get a port job.
yamblasteracer35 do you race D6?

 

[rocky318]

so all of them have to do with airflow and reducing turbulance. i go to school for this ish. so the reed spacer is used 2 increase the velocity of the air going into the motor. it gives you added torque however takes away from top end because of the increased distance the air has to travel. the boost bottle is made for 34mm pj carburators because they have a problem with the plate shutting and then there being a hesitation from closed to wot on shifts. because of extra air getting trapped in there. the power now thing just keeps the flow from getting turbulent spots. they take away from the energy of the air flow. from my experience reed spacers work well on mild modified motors. they are needed for 30 mm carbs. i was told not to use it on a more mods b/c it takes away more than it gains. as for the powervalve now thing it technicaly works however its not worth buying. its like those stupid tornado things for cars that claim all these gains. but really they just dont' do much of anything.

somebody here told me i was wrong about the boost bottle being for 34mm carbs and hesitation. but then i read at trenga racing that is what they developed it for. it was in a thread a while back tho. i just really would like to know the truth about them. sorry for thread jackin but i hate being told im wrong like that:-D

 

[flyers42091]

Denny from flotek said thats what they were designed for... So im pretty sure your right rocky

 

[quadboy22p]

yea so there is a design flaw in the 34mm pj carbs. when the throtle gets slammed closed and then you go back to wot there will be a slight hesitation. my blaster has that prob now. if you go to the 35mmpwk you don't have this problem. i think, just speculation, it is partilly b/c of the goofy idle choke set up since the carb can close all the way there is probally a pressure difference created over the main jet that when you go back to wot there is a fuel delevery issue

 

[matt]

1 boost bottle - give me reasons why it works and why it doesnt and how its supposed to work
http://www.wppracing.com/images/boost2600.jpg

2 reed spacer - give me reasons why it works and why it doesnt and how its supposed to work
http://www.jokersracing.com/images/products/Reed Spacers.jpg

3 power now or power now plus valves- give me reasons why it works and why it doesnt and how its supposed to work
QUOTE]
These are my opinons I haven't done any scientific testing.

1 This site is for twins but all the boost bottle research was done on singles.
Boost Bottle

2 Reed spacers in my opinon are something to try and play around with. Sorta like suspension tuning. There are funny things that can happen when you change the resonant frequency of the intake track. Usually if you have less space from the reeds to the carb you will get a more sooner, and more powerfull pulse to the carbs. The trick is if there is a bad resonant frequency that can cause the flat spot in many 2-stroke engines. This can be caused by running a K&N right off the back off a carb. Not always mind you so remember there is no guarantee with some things in intake tuning.
The prefered setup on the Air Cooled Twins is running a x-over tube off the RZ or Banshee, and the K&N 2 in to 1 boot. On a single this isn't an option. Enter the boost bottle. So buy and try stuff. Its not all that hard. There are people on here have sold boost bottle setups for $20.

3 I've never seen them mounted on that side of the carb. I think it makes more sence to put the guides on the filter side, but again buy and try.

 

[blasterboy91]

i have the power now system. its good but not great. it gives it exellent low end and mid range power.basically just makes it hella easy to wheelie

 

[blasterfreek30]

Ive thought about getting the power now but its a little pricey, so i got thinking. all it really does is slice your airflow into two smaller masses, preventing the swirling motion when the air hits the slide at low throttle openings. couldnt you create the same affect by putting something like a small homemade blade in your airboot just in front of the carb. that would allow the bottom half of the airmass to enter under the slide faster instead of swirling around in front of the slide, creating instant throttle response....just an idea?

 

[xBLASTERx 420]

i waz thinkin bout gettin the v force 3 reed valve so ur sayin if i did get that it wuld take away from the top end

 

[FLOTEK]

boost bottle does nothing for a blaster
to me the power now is a pricey band aid for a small poorly made mikuni roundslide carb just buy a modern keihin pwk for better performance and be done with it
reed spacers are designed to equalize the wave and create balance but they reduce velocity and increase crankcase volume on some motors thats good some its bad ,they also aid in supplying an early direct charge at the reed tips into boysen ports if the builder added those to your porting design

 

[djack12]

boost bottels look good. thays why i have one. i didnt even drill a hold in my manifold. i just slipped the hose over the top of the nipple.