Reed block

Hay would i get more bottom-end power out of my 01 Honda CR 125 if i put a new reed block and reeds or would it just run better because the air has more time to mix with the gas?

you would get more power, when you say new, dont meen new oem do you?

buy the rad valve or v-force (rad vavle is usally better on most bikes)

and you should feel more power everywhere

thanks

ive asked this before,but i thought of somthing

look at this...

now how would rad be better?

it seems like the rad valve is like stock...

it seems like it is just a little bigger,allowing for more volume than stock

now the vforce has more surface area,wouldnt it allow for more flow?

MXR, you've been listening to your mechanic Jeff again. He and I had a long talk the other day about this, and his explanation was exactly like yours. From talking to him, it seems alot of what he is basing his knowledge on is coming from a snowmobile background. The VForce is usually better than the RadValve in snowmobiles. Simply because snowmobile intakes are straight. On motorcycles and ATV's they are not.

The VForce does have more reed tip area. But not as much as the RadValve. Those other reeds in there also take up room, and add restriction to flow.

The VForce gets it's reed area by physically putting in more reed petals. This is good and bad. It is good because more reed tip area will allow more of a quick reaction to pressure changes in the intake. This gives better throttle response in relation to the stock block and reeds.

The Boyesen reeds also have more reed tip area than stock. They do this by stacking the reeds on top of each other. The top reed is thin and will react amazingly quickly to any slight pressure variance. It will also open easier than stock because it has less tension than stock. That will give more low end power and throttle response. The bottom reed is thicker than stock. It will open at higher pressure changes, and actually hold the top reed from fluttering. This gives more over-rev and high rpm power than stock. On most bikes a properly jetted set of Boyesen reeds on the stock block will outperform a VForce or VForce-2. The VForce-3 is usually better than just Boyesen Reeds because the intake is actually aerodynamically designed. The old VForce and VForce-2 were not.

Now the RadValve... The RadValve is designed to be aerodynamic, and to use the Boyesen Reeds. This gives the best of both worlds. It allows higher flow rates at partial throttle openings, and more mass flow at full throttle and high rpm's. It also has all the advantages of the dual-stage (and in some of the new RadVavles three stage) reeds. There are VERY few motorcycle applications where the VForce will outperform a RadValve.

On the CR125, the RadValve helps massively. The stock intake has a fairly bad restriction because of the angle it is at. Adding a VForce block will not change that angle as they use the stock intake. The Boyesen RadValve is a one piece unit. The internal shape straightens out the flow.

Like Paul Harvey says: "And now you know the rest of the story..."

-Steve

moto814 wrote:

MXR, you've been listening to your mechanic Jeff again.From talking to him, it seems alot of what he is basing his knowledge on is coming from a snowmobile background.

it is the same thing

and please,just call me adam

and did u talk him into using the rad valve on my bike now?because before when i asked him to put them in he was pissed,and didnt want to because of he felt the vforce were better,but if you talked him into it,then i can put them on

so is he ok with boyseens now?

Adam, why do you bother arguing with Steve? your what...12? 13? he's been around the sport, mechanics and everything for longer than most of the people on this board have been alive. Steve is probably one of the only guys I listen to when it comes to bikes.

argueing?no no no no

i asked about reeds

i know the rad is better,he said so

i was just asking why

mxr823 wrote:

moto814 wrote:

MXR, you've been listening to your mechanic Jeff again.From talking to him, it seems alot of what he is basing his knowledge on is coming from a snowmobile background.

it is the same thing

Sounds like an argument to me. sleds and bikes differ alot.

Derek wrote:

mxr823 wrote:

moto814 wrote:

MXR, you've been listening to your mechanic Jeff again.From talking to him, it seems alot of what he is basing his knowledge on is coming from a snowmobile background.

it is the same thing

Sounds like an argument to me. sleds and bikes differ alot.

my bad,i left out the most important part when i did my first quote..

i meant to say...

and his explanation was exactly like yours

it is the same thing....that was the explanation he gave me

im not dumb derek(well...

)

i know their diff,i ride both

and i see the internals of sleds more then i do bikes,because im always up there in the winter

Adam: It would seem there is no convincing him. He's brainwashed like so many others about the VForce. But in the end, it's YOUR bike.

-Steve

I think i'm gona get the rad valve and Boyesen pro series reeds (if i have the money)

good choice

and steve, you said what i woulda, but with alot more stuff added, lol i woulda been like
"the rad valve differnt stage of reeds, one on top of the other ect etc)

lol i love your technological rants, i get a big lump of smarts each time, lol thanks

and yea, rad valve

oh,i almost got it

and for the record,im not trying to argue,if it may seem like it(derek...)

so the rad vavle is a one piece unit...so although the v-force has more reed tip area(which might result in slightly more flow) the rad valve makes up with its straighter intake,and the fact that its top layer of reeds open easier then the v-forces do,which results in quicker throttle response because it is more subject to changes in flow at smaller changes in pressure

correct?

Yup.

The RadValve also provides higher intake velocity. A higher intake velocity gives quicker and more complete crankcase filling, and a stronger signal to the carb. which is why you HAVE to jet a RadValve so much leaner than any other unit.

-Steve