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V-Force 3 vs. Boyesen rad valve
Posted: 10:32 pm Oct 17 2009
by Little Jeff
I have a 2000 KDX200 that has all the RB mods, FMF Gnarly pipe and a SA and 607 Boyesen power reeds. Bike runs great, but was wondering if either a V-Force 3 reed cage or a Boyesen rad valve might wake it up a little more. I ride all woods and no racing. What do you guys think. Sometimes I can't leave well enough alone
Little Jeff
Posted: 10:35 pm Oct 17 2009
by Indawoods
V-Force...
forget the RAD... they were never any good on a KDX.
Posted: 11:46 pm Oct 17 2009
by Little Jeff
Will the V-Force take anything away from the bottom end and what will it do for the top?
Little Jeff
Posted: 11:51 pm Oct 17 2009
by Indawoods
Better all around... very noticeable!
Posted: 10:03 am Oct 19 2009
by gregp
I have used both the V-Force and the Boyeson Rad valve with good results from both. The Boyeson appears to have a steeper angle on the reeds so you may have to replace them more often, but I never had a problem with mine.
The V-Force works well, and is a little cheaper, so I would go with that one.
Posted: 10:06 am Oct 19 2009
by gregp
This one is said to outperform both the RAD valve and the V-Force, but I have never tried one.
http://www.mossbargerracing.com/index1.htm
Posted: 10:19 am Oct 19 2009
by Indawoods
Hmmmm..... same cage and reeds for the KX 125 and the KDX?
I don't know about that....
Posted: 08:46 pm Jun 08 2010
by SchafferFinney
I have a question about this topic. If the vforce is so much better, why does fredette swear by the boyeson? is there REALLY that much difference between the two?
Posted: 09:15 pm Jun 08 2010
by Indawoods
Ask him.
Posted: 12:50 pm Jun 10 2010
by cornishwrecker220
gregp wrote:I have used both the V-Force and the Boyeson Rad valve with good results from both. The Boyeson appears to have a steeper angle on the reeds so you may have to replace them more often, but I never had a problem with mine.
The V-Force works well, and is a little cheaper, so I would go with that one.
agreed, i have a 2003 220 with a boysen rad valve + reeds & mine works very well, there`s a noticable improvement in the bottom to mid range pull..you need to tweek the jetting slightly (down 1 size on the main jet ) i run a gnarly pipe with a power core 2 silencer, air box lid on with snorkle removed..i replaced the boysen rubber carb boot recently as i split it so i fitted my standard reed cage assembley while i was waiting for my new boot to arrive & seriously noticed the lack of torque that i had with when the rad valve installed!..ive not tried the v force but the boysen im pleased with.