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  #1  
Old 04-05-2005, 12:56 PM
scooter842's Avatar
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Default Boysen Rad Valve VS. v-force delta 3

for an 05 yz 250... what you guys think. Pros & Cons of each. ive heard great things about the boysen rad valve. ???

boysen= $160.00
v-Force= $130.00
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  #2  
Old 04-05-2005, 01:13 PM
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Default Re: Boysen Rad Valve VS. v-force delta 3

iam not sure . i would like to know too.
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  #3  
Old 04-05-2005, 03:05 PM
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Default Re: Boysen Rad Valve VS. v-force delta 3

I have the threes in my 125 and i love them. you don't even need to re-jet. never used boyseen but heard good things. Satch has threes in his bike and told me that he likes them as well. there is good response and a nice gain in low and mid power as well as over-rev.you will like the v force reeds.
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  #4  
Old 04-05-2005, 05:20 PM
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Default Re: Boysen Rad Valve VS. v-force delta 3

I don't think you will be disapointed in either.

I went with the VForce3 and the bike has a crisper throttle response and you can feel the increase in the low-mid with no loss on top (if you use the stock reed block spacer). If you want crazy fast top end (at the expense of low end) then remove the stock spacer. My advice....leave the spacer in.

Besides...Chad Reed, Ricky Carmichael and Bubba use the VForce....

Last edited by Satch0922; 04-05-2005 at 05:23 PM.
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  #5  
Old 04-05-2005, 06:49 PM
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Default Re: Boysen Rad Valve VS. v-force delta 3

Where Rad Valves dominate is in the Snomobile Category. But as for moto V-Force still rules. I have V-3's in my RM. Really good power in low to mide boosts.

-Pintlar-
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  #6  
Old 04-05-2005, 07:24 PM
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Default Re: Boysen Rad Valve VS. v-force delta 3

Over the years I have used both. I like the V-Force better than the Boyesen because jetting (if even needed) is much easier to get dialed.
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  #7  
Old 04-06-2005, 06:56 AM
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Default Re: Boysen Rad Valve VS. v-force delta 3

Hey Satch, how much low end loss are we talking about? I usually like a bike with no low end and a humungous top end.
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  #8  
Old 04-06-2005, 07:34 AM
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Default Re: Boysen Rad Valve VS. v-force delta 3

Gonzo...I tried it without the spacer and did not like it. The thing I love about the YZ250 is the low end and mid that it has. THe bike really screamed on top though but at the expense of my clutch plates! LOL
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  #9  
Old 04-06-2005, 06:48 PM
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Default Re: Boysen Rad Valve VS. v-force delta 3

Same here Gonzo, but I think I'll keep the stock spacers if I get the VF3's (which I'm planning on). I need a bit more low end without changing the gearing-don't wanna be shifting 4 times per straight lol.
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  #10  
Old 04-06-2005, 06:52 PM
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Default Re: Boysen Rad Valve VS. v-force delta 3

If you want more top endbuy the Rad valve my dad has tried both on his RM 250 and likes the Rad better....
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  #11  
Old 04-06-2005, 07:58 PM
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Default Re: Boysen Rad Valve VS. v-force delta 3

I've tried both on an 04 YZ 250 which is close to the 05. The delta force gave a little better throttle response and a little more lower midrange. The rad valve cut a little bit on the bottom and gave a huge boost in the midrange and top end. For moto I liked the delta force better. For desert and more wide open riding the rad valve worked well. It gained about 2 bike lengths in a drag race against our baseline CRF450. It also gained top speed but I can't remember how much. I used a gps for testing and I didn't write the info down because it wasn't my bike. I was really impressed. I would have really been impressed if it didn't lose any bottom. And yes, you have to rejet with the rad valve, but it is really easy! We tried it with and without the intake spacer and prefered it with! I would have liked to have tried the larger intake spacer from moose racing with the rad valve to see if the bottom would be like stock but still have the added boost!
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  #12  
Old 04-06-2005, 08:46 PM
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Default Re: Boysen Rad Valve VS. v-force delta 3

I think the Rad Valve gives more tension on the reeds making more top end.
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  #13  
Old 04-08-2005, 09:51 AM
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Default Re: Boysen Rad Valve VS. v-force delta 3

hard decision they both sound good i want low end and mid
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  #14  
Old 04-11-2005, 07:48 PM
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Default Re: Boysen Rad Valve VS. v-force delta 3

low -mid = v-force
top end = boyesen

used bothe on many bikes all the about the same results.
with boyesen you'll have to rejet 1-3 main jets leaner with v-force you normally don't or very little
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  #15  
Old 06-22-2012, 10:11 AM
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Default

great thread ya'll thanx
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