Which is the best reed setup for the 400 v-force or boyesen rad valve

 

If the rest of your bike is running great it wil still run great and have great performance with either kind. I personnally run v-force but I doubt very seriously if i would notice a seat of the pants difference if I switched to boyesen.

 

The Delta's are the hot set up. Get a reed cage spacer to install with it.

 

The dynos prove it, V-force is better. Like they said, use the spacer, it helps protect them.

Ken

 

I have the Delta V-Force in my 400cc Xplorer.In my opinion,it was a waste of 150 bucks.Add another 25 bucks for the spacer and its a waste of 175 bucks.I felt NO increase in speed or performance.Keep in mind,I have NOTHING official to base my observations on EXCEPT a seat of the pants feel while accelerating.

If you want to make a real differance and not kill your pocketbook,change your primary spring over.You'll notice a seat of the pants differance here and it'll cost you around 25 bucks.

Good Luck,
Bill

 

Bill, I have to agree with you if you don't have any other mods, you probably won't feel a performance gain. When you look at the big picture of a ported and piped engine, they enhance the flow (lots of air in and lots of air out) completing that "Air-pump" enhancement. Baseline, a clutch kit and a pipe are probably the two best initial mods a person can perform, and REALLY feel it. Reducing wt also helps, especially getting rid of the oil injection tank.

Ken

 

Bill,

I'm in agreement with modquad. Did you re-jet after installing the reeds? Believe it or not, the reeds actually make the engine run slightly richer (every other mod makes the motor run leaner). Drop down a jet size in the warmer weather and you'll find it becomes slightly more responsive.

Still if that is the only mods you have, I don't think that it'll make that much of a difference in overall output. You have to get air moving through the motor from the front and back for the reeds to be the most help.

 

Mike and Ken,
thank you for your response.I do in fact have other mods.I have a PSI pipe w/stock Scrambler silencer.I also done the RcR airbox mod with a KN filter.I have a Heel Clickers clutch kit and went from a 36 tooth rear sprocket to a 38 tooth rear.Im running SideWinders 250 dollar sprockets/chain.I am currently running a 220 main and the plug looks great.

We must also keep in mind that im running some HUGE 26 inch x 12 inch wide rear Mudrunners and 26 inch x 9 inch wide Mudrunner front tires?These require ALOT of extra power from the engine/clutching vs a STOCK engine,so I would'nt notice the gains as readily as someone running stock tires.

Happy Trailing,
Bill

 

"THANKS" for the info I am new to the sight and I am already finding alot of useful information

 

Madscrambler --

It all depends on what you have done to your engine. The choice of v-force or boyesen is negligible "unless" you have taken the correct steps to improve the intake/exhaust of your entire system. On a stock setup, don't do it. If your engine has been modified you can expect the v-force to be "slightly" better on top, but the Boyesen setup will give better throttle response throughout the range.

Trader Jack
www.godigital-design.com/schultzmotorsports