rad valve versus v-force

W

waxhead

wannabe backflipper
Location
gold coast
who here has run the 3 petal system that full spectrum use against the v-force setup
which was better
i was told that the boysen setup make more pwer
what have you found
 
F

Freestyleriverrat

Guest
I know the RAD-valves are better made. While on the subject of valves has anyone gone from stock to the rad or v-force? What kind of difference did you notice?

I think I read somewhere about the rad valves out flowing the m-16's by R&D......I think I'll look around for that thread. Ask the guy from full spectrum.....he has all the technical data b/c he flow tests all his setups and I would imagine that he has done an indepth comparison of the valves.

This is about all I could find. Pretty much subjective comaparisons:
http://www.pwctoday.com/showthread.php?t=37648&highlight=v-force
http://www.pwctoday.com/showthread.php?t=66050&highlight=v-force
 
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SkiDaddy

SkiDaddy

Just Havin' Fun!
Location
Orange City, FL
A more interesting question for me is how does the RAD valve & V-Force compare to Carbon Tech LT reeds on a stock reed cage. For surf/freestyle use in a freestyle ported engine w/OEM 44s.:sneaky:
 
Mile9c1

Mile9c1

X-H2O.com
Location
Grand Rapids, MI
2nd nature said:
whats the price difference?
Click to expand...

The V-Force II are about $260 and the Rad valves are around $310.

IMO most people would have a hard time telling the difference between them, but I'd guess the V-Force work slightly better at low RPM's (soft reed setting) and the Rad's flow slightly more.
 
#ZERO

#ZERO

Beach Bum
Location
Florida - U.S.A.
The only three petal system that RAD sells is called the Extreme Velocity Intake Kit and it sells for $584.29 including the intake manifold, carb adapter plate, E.V. Valves and hardware. The normal RAD Valves are only the two petal design and are a bit cheaper.
 

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SUPERJET-113

SUPERJET-113

GASKETS FOR CHAMP BRAP!
Site Supporter
Location
Lake Havasu City, AZ USA
There was a racer guy on Ebay that had some V-force II's for a Superjet that he said had only 2 hours on them. I emailed him and asked him why he was selling them with such low hours, he said he has the Boyeson Rad valve set up with manifold and tried the Vforce II's and said he couldnt tell a power/throttle responce difference. So he decided to keep his Boyeson set up.
 
eel

eel

Our home is girt by sea
waxhead said:
who here has run the 3 petal system that full spectrum use against the v-force setup
which was better
i was told that the boysen setup make more pwer
what have you found
Click to expand...

run the 3 petal rad valve on one cylinder, and the vforce on the other. Remove one plug cap at a time and run @ wot. Use a wet hanky on your forehead as a kiwi speed guage. Cap off vforce end and forehead colder = boyesen faster. or maybe opposite?

Note: Don't change the hanky between runs as this will result in inaccurate readings. Also, if during a run you notice that its suddenly night time, Its not due to the fact that you are travelling faster than the speed of light and are experiencing time dialation, this is because the hanky has fallen over your eyes.
 
E

egbrig

The vforce design is a version of an old Boyesen design. Boyesen let the patent run out when he improved his valve designs. On a flow bench the Rad out performs the vforce, but when talking of valve design the real question is "what is the valves frequency"? Thats why the new Rads are multi petal.
 
crammit442

crammit442

makin' legs
Location
here
I'm running R&D M16's. LOVE them. The reeds they come with suck. Replace them w/the petals Jetworks has made for them and they last forever. Similar to Vforce in design, but longer lasting with the replacement petals. So far they appear to be lasting better than the Full spec/boyeson's w/equal performance. The full spec manifold is a bit nicer than the dominator, though.

Charles
 
E

egbrig

I admit there is more than one way to skin a cat. If it works then it works. BTW, Boyesen manufacture's the M16 system for R&D.
 
Jr.

Jr.

Standing Tall
Staff member
Site Supporter
Location
Hot-Lanta
here is the basic on these two...............

in the begining, Ed Brazina/full spec, designed the m16 for R&D. when r&d decided to make the parts themselves, Full spec/Boysene built their own version. The performance differance is very slight. with FS/Boy slightly ahead because of Boysene's vast knowlage on reed pedal development.
the big differance is quailty. The FS/Boysene version is heads up better. from castings & o-rings. to overall fit & finish. The m16 still uses gaskets, & the R&D casting quality leaves some to desire. price is very close between the two.
overall, if purchasing new, Full Spec !!! . If purchasing used, you can't go wrong with either one.

hope that helps
 
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