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Search the Dirt Rider Forums:RC Valve/Power valve Stop Pin Question
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Was reading on the two stroke motorcross site about an upgrade on their 2001 CR125 project bike. They went from a 4mm stop pin to a 6mm pin. My question is what is the performance gain from going to 6mm from the stock 4mm? And what exactly is enlarging the diameter changing in reference to the power valve/RC valve?
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Unless it is a durability thing no reason
http://www.ronayers.com/Fiche/TypeID/26/Type/EXHAUST_VALVE/MakeID/1/Make/Honda/YearID/42/Year/2001/ModelID/7482/Model/CR125R/GroupID/328597/Group/EXHAUST_VALVE
No 16 is what they are talking about
Honda used a mechanical Power Valve on the 125 thru 2003...
The RC valve showed up on the 125 in 2004 it was electrically controlled and cable actuated.
Here is the schematic of the 125 RC Valve
http://www.ronayers.com/Fiche/TypeID/26/Type/EXHAUST_VALVE_04/MakeID/1/Make/Honda/YearID/44/Year/2003/ModelID/7002/Model/CR125R/GroupID/301657/Group/EXHAUST_VALVE_04
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Colorado
2006 RM-250 -
I'm aware of location and part. I guess what I'm looking for is a more detailed explanation as to what modifying the stop pin to 6mm from 4mm actually does. And if anyone has done this mod did they notice a difference and where ie. bottom, Mid, Top end etc.. O and if it helps I'm working on a 2003 CR125R.
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