Hi guys i am new to this forum. I have several dirtbikes but my KDX 220 is my absolute favorite. I know the 220’s have defective pistons, but this one is still original and it has been ridden hard its whole life.
To my disbelief, the compression was 155psi. Regardless, I’m finally giving this bike the love and respect it deserves. I ordered an Athena piston kit from Richard Freddette. And began tearing the head down. This is my first time doing it. Once I got a look inside I noticed some pitting which scared the hell out of me, then I noticed a vertical line/scratch on the opposite side. Upon research, it seems like the pitting is normal and fine. And the scratch is nothing to worry about either, especially since it had 155 psi before. I have to really try hard to be able to feel the scratch with my finger nail. I can barely feel it with my fingertip. What do you guys think?! Thank you very much for any help. I cant wait to ride this thing again!!!!
