Reed Notch

Reed stop Notch

All these instructions on this modification, says to point the notch upward. I took a look at my reed cages on my 98 600 twin. Does the notch go on the top reed stopper or the bottom?? These twins are piston port and the airflow points downward. I can see where the lower reed stopper might affect the flow but the upper one basically backs up against the top of the
wall of the passage way. I can't see how the notch on the top one is going to benefit anything. I only want to do this once, that's why I'm asking.
 
sorry for all the questions, but this still doesn't make sense. The "transfer post" and the "upper port"??? Are we talking about the same engine (600 twin). I can see where the airflow starts at the reed cage and goes under the piston into the case. There are no ports or posts or anything in the way. It's just a big hole (or tunnel).
 
its actually a back port, If you had the head off and the reeds installed and you looked at the intake side through the cylinder you will see that the reed stoppers are blocking part of that port. As far as v-force and the notch, the newer v force really work well but I think you will gain more from the notch for the cost.
 
i got some v-force's laying around, if i were to use them would i use the reed spacer?
 
I think the 4 force have a spacer built in enough to pull them back...unless its just the reeds then yes notch the stoppers. If I am not mistaken all the v force are all in one cage, right??
 
:roll: thx for the help Mr. Sled. After your comment, I banged my head against the wall a few times. Just the angle i was looking down there, I couldn't see the port until i stuck the old eyeball right in there. Stoppers are now notched and everything back together.
 
yeah tom you're right. there is a port in the top. kind of hard to find unless you get you head under there. thanks
 
I did this mod on mine and didn't really notice any difference . When I looked at the pics just now it ocurred to me that the reed is going to be there when it is open . I don't undestand how this is going to change any thing . Could some one exsplain it ?
 
Wilson, when the reed is open it is because air/fuel mixture is being drawn into the crankcase because the piston is moving up. Once the piston begins to move down, the reeds close thereby blocking the air/fuel mixture from going backwards through the carb, and this mixture then travels up the transfer ports into the cylinder. The reed notch allows more mixture to flow up that particular transfer port. Kind of like a poor mans porting job.
 
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