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New Top End?
Posted: 07:04 pm Sep 07 2008
by dirtbikelogan
Hello,
I have recently purchased a 2006 KDX 200 and am questioning wether or not it needs a new top end. Does anyone know a defenite way to tell wether or not it does? Any help on this would be great. Thanks!
Posted: 07:20 pm Sep 07 2008
by Mr. Wibbens
You can check the compression
FWIW, My ol' '92 has been pulling my dainty lil +270lb ass (nekkid) for the past +5 yrs on a Wiseco top end
It still runs as good or better than it did 5 years ago
I'm sure it's due for a new one but I just don't have the $$ right now
Posted: 01:57 pm Sep 08 2008
by canyncarvr
If it starts easily and runs good...run it.
There are plenty of other things I will guaran-darn-tee
aren't OK, though. A biggy:
Grease (everywhere..suspension, swingarm, steering).
The bottom shock bearing is a high maintenance item if you ride much at all. I've replaced mine several times a year in the OEM configuration.
Have fun!!
In specific response to your 'definite' question, Mr. Wibbens is correct. A properly done compression check with decent tools will tell give you a very good idea if the top-end is OK. Consider that six different compression checks done by six different people/guages on the same machine will likely show quite a bit of variance.

I guess 'dainty' used in conjuction with '270#' and 'nekkid' has something to do with undergarment color...which is red judging from the color of the undergarments observed to be worn on some person's head...but, to tell the truth, I really doan wanna know anything about WHAT it has to do with.