KX Riders
Maintenance & Technical => KX500 Original => Topic started by: vagassasson on August 11, 2014, 12:16:57 PM
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(http://i.imgur.com/peSgMww.jpg)
Why does the piston on the right have a big hole in the side that goes almost all the way to the middle. It has the same hole on both sides. I am new to working on k5 motors so if this is a really stupid question just delete this thread.
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It also has a set of groves machined in the ring area of the piston
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Holes I guess are for cooling....
Grooves r for the rings? ;)
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Holes for weight
Groves?
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If you zoom in really close to the rings on the right there are 5 small groves cut in between the ring groves and 5 more above the ring groves +1 more below the ring groves
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(http://i.imgur.com/8VBRpBC.jpg)
Factory piston
(http://i.imgur.com/FU16F56.jpg) other piston
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Id wager they are for trapping oil and hot gases....think of them as built in micro-rings....anyone got a better guess?
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Id wager they are for trapping oil and hot gases....think of them as built in micro-rings....anyone got a better guess?
I was thinking the same thing but I had never seen a piston like it before so I had to ask
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Are u going to a larger bore or just replacing the piston?
What brand is that piston?
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I bought a used piston and cylinder off eBay. This is the piston that came with the cylinder but as you can see its already pretty wore out
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Piston on the right looks like an older Wiseco. The tiny grooves were marketed as "anti-detonation" grooves I believe.