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  #1  
Old 08-21-2009, 03:55 PM
IslandRide's Avatar
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Default Boysen Vs. VForce 3 VS. Stock reeds

I have looked around and it seems that a lot of people favor Boysen, while some favor V-Force and some have the stock reed cage with different reeds on them.. What can you recomend? I am going to try and buy reeds asap and I am alos willing to spend the money on something if it is really better..

Let me know what you prefer and why.
PS: My bike is an 01 CR 125 with FMF SST

Thanks again, you guys help me keep my bike going!!!
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  #2  
Old 08-21-2009, 05:06 PM
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I can only say that on my YZ250 the V-Force worked the best with the SST pipe. A little more difficult to jet than the Boyesen but once I got the jetting dialed it was sweeeeeeeet!!
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  #3  
Old 08-21-2009, 05:33 PM
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The Boyesen and VForce reeds are superior to stock because the
design offers twice the reed surface.

I have used both brands over the years and have come to prefer
the VForce 3. If you install it on a stock bike with an SST pipe
you will notice more snap off the bottom with cleaner pick up
into the mid range and a nice overrev (very handy on a tiddler).

dogger
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  #4  
Old 08-21-2009, 05:49 PM
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v-force reeds may be expensive but are easily worth the money over boyesen. boyesen are ok buy v-force dominates them
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  #5  
Old 08-21-2009, 10:19 PM
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I have a Boyesen Rad valve in my 2000 CR250 I like it. Seems like I got a little more bottom end over stock. Used to get snap crackle and pop on the top not any more.
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  #6  
Old 08-22-2009, 08:29 AM
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oh man, still not sure.. I looked through other posts and some guys swore Boyesen rad over VForce, but some of you prefer the VForce. Can anyone tell me what it is that makes them different from eachother and one superior to the other?
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  #7  
Old 08-22-2009, 08:59 AM
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Quote:
Originally Posted by dogger315 View Post
The Boyesen and VForce reeds are superior to stock because the
design offers twice the reed surface.

I have used both brands over the years and have come to prefer
the VForce 3. If you install it on a stock bike with an SST pipe
you will notice more snap off the bottom with cleaner pick up
into the mid range and a nice overrev (very handy on a tiddler).

dogger
id take the Vforce 3, i know nothing about bikes but don has been doing bikes for years and knows his stuff!
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  #8  
Old 08-27-2009, 04:16 PM
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i rebuilt a 89 cr 250 from the frame up and could'nt believe how much low end grunt i recieved from just the boysen powr reeds..i've never tried anything ealse since.. lol
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  #9  
Old 10-02-2009, 08:45 AM
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I have a RAD valve on a KX500. The 500 makes a lot of power all over. I haven't tried the Vforce yet but I plan to. I've heard all kinds of comparisons and tests. I've heard a lot of guys say the RAD valve is the best. But, I've heard just as many say the Vforce is the best. You should look at each part and make the decision on your own. The Rad Valve actually has a polished intake runner to smooth out and increase airflow. The Vforce does not. Based on all the reviews I have seen you will be fine either way. But, I would lean more towards the Rad Valve.
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  #10  
Old 10-02-2009, 04:58 PM
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thanks man, Im seeing about the same amount of split comparisons that you are. I would really like to see a few printouts from a dyno ideally, but I dont know where to find that. Well see..
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  #11  
Old 10-02-2009, 07:26 PM
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Quote:
Originally Posted by IslandRide View Post
thanks man, Im seeing about the same amount of split comparisons that you are. I would really like to see a few printouts from a dyno ideally, but I dont know where to find that. Well see..

I did the same searches you did and asked the same questions. I couldn't find anything either.
I had a guy tell me that based on dyno results, the Pro Circuit Platinum II and a Vforce 2 was the best setup for the KX500. I didn't see the print outs. And, I don't know what the conditions were when he tested. But, I think he said the difference was 1 or 2 HP. Could temp and pressure make that much of a difference? I'm not sure. I have a hard time believing that the Vforce could be much better than the RAD Valve based on the RAD Valves construction. But I am not an engineer. Good luck. Let me know what you find out.
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  #12  
Old 10-03-2009, 09:35 AM
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Quote:
based on dyno results
Dyno results only tell part of the story. Case in point, Honda's case reed
motors produce big horsepower on the dyno, but suck on the track with
a very narrow powerband.

You should be more interested in modifications that make the powerband
broader and easier to manage (especially on a 500).

Like I said in an earlier post, both the the Boyesen and the Moto Tassinari
are superior to stock because of the big increase in reed surface. Both
improve throttle response and broaden the powerband.

It all comes down to personal preference. I have used both over the years
with good results. the Rad Valve is much easier to install (on a Honda)
because you don't have to cut the reed stuffers like with the VForce.
I use the VForce however, because it works better with the other engine
mods and pipe combo I use - personal preference.

dogger
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  #13  
Old 10-03-2009, 11:10 AM
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Quote:
Originally Posted by dogger315 View Post
Dyno results only tell part of the story. Case in point, Honda's case reed
motors produce big horsepower on the dyno, but suck on the track with
a very narrow powerband.

You should be more interested in modifications that make the powerband
broader and easier to manage (especially on a 500).

Like I said in an earlier post, both the the Boyesen and the Moto Tassinari
are superior to stock because of the big increase in reed surface. Both
improve throttle response and broaden the powerband.

It all comes down to personal preference. I have used both over the years
with good results. the Rad Valve is much easier to install (on a Honda)
because you don't have to cut the reed stuffers like with the VForce.
I use the VForce however, because it works better with the other engine
mods and pipe combo I use - personal preference.

dogger
I've never heard it put that way before. I plan to try the Vforce 2 and a Pro Circuit Platinum after I generate some funds.

---------- Post added at 12:10 PM ---------- Previous post was at 11:16 AM ----------

Quote:
Originally Posted by dogger315 View Post
Dyno results only tell part of the story. Case in point, Honda's case reed
motors produce big horsepower on the dyno, but suck on the track with
a very narrow powerband.

You should be more interested in modifications that make the powerband
broader and easier to manage (especially on a 500).

Like I said in an earlier post, both the the Boyesen and the Moto Tassinari
are superior to stock because of the big increase in reed surface. Both
improve throttle response and broaden the powerband.

It all comes down to personal preference. I have used both over the years
with good results. the Rad Valve is much easier to install (on a Honda)
because you don't have to cut the reed stuffers like with the VForce.
I use the VForce however, because it works better with the other engine
mods and pipe combo I use - personal preference.

dogger
What engine mods and pipe u runnin with the Vforce 3?
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  #14  
Old 10-03-2009, 05:49 PM
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Quote:
I plan to try the Vforce 2 and a Pro Circuit Platinum
That will be a nice combination for your open class KX. The Pro Circuit
pipe actually mellows out the monster hit and broadens the already
ample powerband. Used in combination with the VForce 2, you will
gain noticeably better throttle response and slightly more power
everywhere on the power band.

Quote:
What engine mods and pipe u runnin with the Vforce 3?
I'm running a Pro Circuit ported cylinder, head, Works pipe, 304 silencer
along with the VForce 3 and a Keihin PWK on the 1993 CR250 I'm building.
All my other Hondas have VForce 2s including my CR500.

dogger
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  #15  
Old 10-10-2009, 03:30 PM
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I am using the Rad Valve on my 05 YZ 250 and my brother went with the V Force on his 06 CR 250r! They both work better than stock! BTW both bikes have Pro Circuit Platinum pipes with the regular 304 silencer.
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