What Does Porting Exactly Mean?

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Dec 7, 2006
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#1
im wondering because this guy near my town is selling a 2006 yz85 with ebr racing suspension and pro circuit pipes

and he said he had it ported
what does that mean
i dont get what it exactly does
 
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Oct 19, 2006
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#2
Porting refers to changing the timing, area, and volume of the intake, exhast, and boost ports of a 2-stroke engine. Changing the porting alters the power characteristics of the engine.
 
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#5
it means that you line up the ports and smooth them out to where their exactly the same, allows for better air flow and performance.
 
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#6
Lining things up and smoothing them out would be blueprinting. Porting actually changes the geometry to create something new. Most MX bikes will be ported to give a stronger midrange power and some more top end. Enduro bikes will be typically ported for a little more grunt off the bottom end.
 
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#7
76GMC1500 said:
Lining things up and smoothing them out would be blueprinting. Porting actually changes the geometry to create something new. Most MX bikes will be ported to give a stronger midrange power and some more top end. Enduro bikes will be typically ported for a little more grunt off the bottom end.
looks like i had things a bit mixed up. thanks. :cool: