Reed Valves

zalabala

Cadet
Joined
Jun 21, 2011
Messages
17
Why do my reed valve assembly on my 115hp mercury inline 6 have 8 pedals on one side and 10 pedals on the other side and does it matter which side is which?
 

jimmbo

Supreme Mariner
Joined
May 24, 2004
Messages
11,076
Cause Mercury Engineers figured that 9 Reeds for each Crankcase would be enough to make 115 HP, that Model Year. I can't recall any instructions in the manuals regarding Orientation
 

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,178
Same CFM goes to each cylinder as reed block only feeds needed cylinder in firing order on the up stroke.
 

jimmbo

Supreme Mariner
Joined
May 24, 2004
Messages
11,076
If you put 10 towards the Flywheel, the Upper Cylinder has 10 Reeds and the Lower One would have only 8, so the CFM Flow isn't going to be the same for both Cylinders
 

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,178
I cant remember all the details on why but it had to do with the bleed restrictors and flow.
 
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