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I prefer G3 Power Curve Reeds form dirracing. From what I have been told, I'm sure somebody will correct me if I am wrong. Reed spacers placed after the reeds give you more Low End, and I have seen people place reed spacers before the reeds for topend.

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The reed valve is essentially a one way valve in your intake. They keep the engine from sucking and blowing through your carburetor.

 

A reed spacer goes between the valve and the cylinder. Typically these are put in to allow fo an aftermarket reed valve assembly that happens to be longer. There really isn't much performance to be gained with this item as it is not changing a critical volume in any way shape or form.

 

Carbon fiber tends to be the best reed material. The two stage reeds also lend a broader performance levels.

 

The two key issues with reeds are how fast they open and how laminair the flow through them is. The less turbulence they make, the better they are. How fast they open is dictated by the reed itself. There can be alot of difference with this part, so I won't really go into it right here unless you really want to know.

 

My personal preference for valve manufacturers is Boyesen. They do more R&D than anyone else and there construction is second to none. Alot of the other reed valve manufacturers out there make crap. Plain and simple.

 

:cheers:

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The reed valve is essentially a one way valve in your intake. They keep the engine from sucking and blowing through your carburetor.

 

A reed spacer goes between the valve and the cylinder. Typically these are put in to allow fo an aftermarket reed valve assembly that happens to be longer. There really isn't much performance to be gained with this item as it is not changing a critical volume in any way shape or form.

 

Carbon fiber tends to be the best reed material. The two stage reeds also lend a broader performance levels.

 

The two key issues with reeds are how fast they open and how laminair the flow through them is. The less turbulence they make, the better they are. How fast they open is dictated by the reed itself. There can be alot of difference with this part, so I won't really go into it right here unless you really want to know.

 

My personal preference for valve manufacturers is Boyesen. They do more R&D than anyone else and there construction is second to none. Alot of the other reed valve manufacturers out there make crap. Plain and simple.

 

:cheers:

well put.i ve ran boyesen with no problems. been having good luck with v force on my last couple of motors.very pricey. i have no clue why people run reed spacers.

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  • 2 weeks later...

Another tid bit on reed spacers, sometimes certain motor setups, proting, longer stroke, ect. perform better with a longer intake tract both before and after the carb to help get the sonic waves (pressure pulses) from the intake side get in sink with the exhaust side so they will work together better and smooth out the power curve in the midrange where the bulk of the power comes on. Reed spacers lengthen the intake tract and can sometimes help in this way. It seems to be a try them and see if they help sort of thing. I think on a fairly stock motor they don't usually make much difference or can actually hurt performace.

 

As for reeds it seems that most people have had best results with V-force as they seem to boost the power produced over the whole RPM range and not simply change the power curve or improve throttle response with no net power increase like a lot of reeds.

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