V Force Reeds

[JoHNI_T]

What head did you go with and what comp ratio?

Engine-Tech Comp 13.5:1

 

[glengine]

Glengine what is it about the design of the v force reed that aids in improved throttle response??

The larger case volume helps as well the design of the cage itself. In my opinion anyways.

 

[Deano670]

Does a shorter petal design possibly aid in throttle response or is this just a theory I've come up with???

 

[glengine]

That could be possible. I'm not totally sure on all the things that make vforce work so well..

 

[Deano670]

Well heres my theory and I could be wrong. The shorter petal design and the location at which the petals are held in the cage allows the petals to open and close quicker thus creating quicker throttle response. And the more efficentlyyou can move air and fuel through the engine, the more hp you can make. Im still not sold on theory that they increase CASE volume.

 

[glengine]

If you look at the physical size of the whole reed cage the vforce is smaller than the stock ones so therfor there is a larger cc size of volume in the cases.

 

[Deano670]

Well not really, it may free up some space in the case, but a case is a case seal to seal regardless of what is in, it will only hold so much. The only TRUE way to increase what the case will hold is to CASE PORT the engine.

 

[glengine]

But the reed cage takes up space in the cases correct. The actual cases stay the same size, but the reeds take up part of that volume, correct?

 

[Deano670]

Yes correct and thats what i said FREE UP SPACE. But they do not INCREASE case volume. Thats like saying that a glass of water thats half full will hold more water than a glass thats full. Full is full.

 

[Modman]

Yes correct and thats what i said FREE UP SPACE. But they do not INCREASE case volume. Thats like saying that a glass of water thats half full will hold more water than a glass thats full. Full is full.

Doubtful that there is an actual seat-of-the-pants increase noticeable by moving the carbs 1/4" closer to the motor, I moved mine more than 1" closer and hardly noticed it, very very very very slight. Its like guys that put cans on and say they can feel a difference. just because its louder don't mean its faster either.

Pound for pound, IMO, they aren't worth it. mtndoctors dyno results show it.

v-force reeds $250 - 1.5 hp gain = $166 per HP
twin pipes $800 - 10 hp gain = $80 per HP

Where is your money best spent?

 

[Deano670]

Doubtful that there is an actual seat-of-the-pants increase noticeable by moving the carbs 1/4" closer to the motor, I moved mine more than 1" closer and hardly noticed it, very very very very slight. Its like guys that put cans on and say they can feel a difference. just because its louder don't mean its faster either.

Pound for pound, IMO, they aren't worth it. mtndoctors dyno results show it.

v-force reeds $250 - 1.5 hp gain = $166 per HP
twin pipes $800 - 10 hp gain = $80 per HP

Where is your money best spent?

All to true, however in my opinion when pipes are installed and you have allowed the exhaust side of the engine to flow freely, I always try to allow the intake side of the engine to breath equally. My opinion its a package deal! No doubt pipes make more hp than the reeds.

 

[Slamnek]

I definatly felt a difference in throttle response on my rev. IMO they work great.

 

[Deano670]

Slamnek that above all, is what the reeds are designed to do.

 

[OVERKILL 19]

All to true, however in my opinion when pipes are installed and you have allowed the exhaust side of the engine to flow freely, I always try to allow the intake side of the engine to breath equally. My opinion its a package deal! No doubt pipes make more hp than the reeds.[/QUOTE]

That makes sense. Like my wife say's to me all the time "keep it simple stupid" I'm sold, now I just have to imbezel money out of the account so she don't see it and I'll have new reeds. Who has the best price for both sleds?

 

[JMCX]

Yes correct and thats what i said FREE UP SPACE. But they do not INCREASE case volume. Thats like saying that a glass of water thats half full will hold more water than a glass thats full. Full is full.

Everything below the piston and downstream of the reeds is case volume.

Too little and you won't have enough fresh charge to fill the cylinder. Too much and the pumping action of the piston, pulling air/fuel through the carbs and then pushing it up the transfer ports, will be weak.

Reed spacers and reed cages of different size affect case volume.

 

[Deano670]

Like I said seal to seal a case will only hold so much! You can add and subtract within that space all you want, but the only true way to INCREASE the case volume is to INCREASE the physical size.

 

[xtremegriz]

While you guys are on the topic of Reeds, can anyone tell me why my reed spacers are so thick? So thick that it forces the carb bowls to touch the top jackshaft and wear through! A guy I know just got v-force reeds installed and his spacers are half the thickness!

 

[SLEDBUNNYRACING]

What kind of sled and motor size is ti?

While you guys are on the topic of Reeds, can anyone tell me why my reed spacers are so thick? So thick that it forces the carb bowls to touch the top jackshaft and wear through! A guy I know just got v-force reeds installed and his spacers are half the thickness!

 

[Summitric]

What kind of sled and motor size is ti?

READ HIS SIGNATURE..... '04 SUMMIT 800 ..... WHAT TYPE OF REEDS ARE THOSE... YAMAHA USES SPACER PLATES TO ALLOW MORE ATOMIZATION OF THE FUEL/AIR, SO I SUSPECT THESE WILL BE THE SAME.... I SUSPECT THESE ARE THE MOTO TASSINARI REEDS???

 

[xtremegriz]

They're V-Force Reeds. They were on the sled when I bought it. I plan on a drop and roll so the clearence issue will be taken care of. Might go on one more ride, so can a guy take that thick spacer out until I get my mods done?