Two Stroke Motocross Forum > Technical

two stroke porting

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JETZcorp:
Reed valves, power valves, silencers, who needs them?  I don't get why the good old rotary valve didn't catch on.  They provided so much power, and the throttle response was better than a reed valve engine (which has a bit of hesitation compared to piston-port or rotary valve).  And, it was a spinning piece of metal instead of some bits of fiberglass bending back and forth.  Unbreakable!  Ever wonder how Kawasaki could make a 100cc flat-tracker that would pull massive wheelies with full-grown men onboard?  Rotary valve!

That's my rant for the day.

dogger315:

--- Quote ---what's the best reed valve to get
--- End quote ---
It comes down to what part of the powerband you want to
enhance.  For better low to mid and improved throttle response,
The VForce 3 is the ticket.  For better top end, the Rad Valve
is the choice.  I have used both over the years and now use
the VForce exclusively for 250 cc and up and the Rad Valve
on 125s. 

dogger

G-MONEY:
Rad Valve   pinner to winner    don't send your money to Italy keep it here!Boysen

Out of Order:

MXLord327:
G-Money, I don't think you have your facts right about the V-Force, Moto Tassinari is not from Italy, their shop is in Lebanon, NH, right on the Vermont line, and from what I have heard, they are great people!!  I love my V-Force 3's in my YZ250!!!

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