Meaning...it was stripped/replated/honed again?
Did the cylinder threads come out with the stud on disassy...or they were just ratty enough to not hold this time?
BTW...that does 'just happen'. I've seen bolts come out of quite new aluminum (not old..not sitting for years...not corroded that I could tell) complete with an intact spiral of every speck of aluminum that used to be part of the hole.
It was just honed again. Nuthn' to serious.
I think a combination of both. After some further investigation, it looks like my cylinder was helicoiled by the previous owner. The odd part is that when we did the first top end on my bike, it had a stock piston in it.
Ah well, Matt's (the mechanic)has the parts on order and he's going to get my bike (hopefully) put together for this weekend's race.
I'll let y'all know how it goes after our Friday test ride.
Jeb wrote:I'm lookin' forward to hearing your report with the porting. I wish I understood more about how which porting dimension affects what and on which port(s). It's mesmerizing to consider how things could change by shaving a few mm here or there . . .
out of curiosity you mentioned riding a CR250 - are you talkin' the R (two stroke)? Would you care to comment on how its power feels compared to the top end of the recently ported cylinder?
Yes, the "R". Matt has had his CR ported for more bottom end by EC as well so it's pretty tame compared to a stock CR. The porting in my opinon is comparable in power but the CR has just a bit more "omph" to it when I need it compared to the KDX. However there were several times when we were whipping in and out of the trees at Kennedy Meadows that I'd wished I'd had my mellow-n-nice 'lil easy to throw around KDX. Of course there's issues with the power band on the CR that creates its challenges while riding it.
I'm still not sold on any other bike to own other than my KDX. (Although I'm going through a love/hate relationship with it right now.
)