Maintenance & Technical > KX500 Original
Powernow for Sudco 41
Motorrad:
I know they have the Powernow carb inserts for the 39 pwk..
Does one exist that will go in a taper bore sudco 41?
I doubt it.. but figured Id ask..
Not saying I want to run one... just curious if the option is out there if somone wanted to..
cbmoor:
Hey Mottorrad what are the advatage of these what do they do. Do they increase the power in a different area of the rev range or just give more power everywhere? I have seen these for the bikes but did not know what they do and was there any advantage in installing them.
snoopjonnyjon:
My understanding is that the idea is to segment the airflow, so that at half throttle or below, the top half of the intake deadheads, and you?ve got a longer cleaner ?port? into the half open carb? and at any other point, this just becomes a restriction. The biggest difference is felt on bikes that came hugely over-carbed like a KTM 125SX (39 PWK on a 125!) or CRF250R. I have doubts that there would be any benefit on a 500.
And I haven't seen one for a 41.
1989kawasaki:
--- Quote from: cbmoor on March 16, 2011, 09:49:36 PM ---Hey Mottorrad what are the advatage of these what do they do. Do they increase the power in a different area of the rev range or just give more power everywhere? I have seen these for the bikes but did not know what they do and was there any advantage in installing them.
--- End quote ---
--- Quote from: snoopjonnyjon on March 17, 2011, 03:35:22 AM ---My understanding is that the idea is to segment the airflow, so that at half throttle or below, the top half of the intake deadheads, and you?ve got a longer cleaner ?port? into the half open carb? and at any other point, this just becomes a restriction. The biggest difference is felt on bikes that came hugely over-carbed like a KTM 125SX (39 PWK on a 125!) or CRF250R. I have doubts that there would be any benefit on a 500.
And I haven't seen one for a 41.
--- End quote ---
i think those settle turbulence in the venturi
DoldGuy:
The whole concept behind these are to give good throttle response & the ability to use a larger carb. Once installed @ anything less than half throttle, the motor sees a carb half the diameter of its actual size keeping the velocity high over the needle, resulting in good atomizatiion of the fuel and the "Feeling" of a smaller carb at lower throttle openings.
I can not say they do or do not work, but a buddy has run them on his sons bikes & says there is a difference, as he used to use the Rifle Boring prior to these & now just uses the blade.
DoldGuy
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