I've been riding for quite a few years, and have mostly been riding motocross (CRF 450R) with my son, along with some single track riding in the Rockies. Since I recently reached the half-century mark, I decided to tone it down a bit and start doing more trail/single track riding. My 450 is pretty difficult for me to ride in the really technical stuff, so I'm very excited to start riding this "new" bike! 2-stroke baby!
First thing I did was bought a Cyclepedia manual. The bike bogs really bad right off of idle, and supposedly the carb is jetted for 6-8k feet. I removed the KIPS cover and noticed that it was just barely moving, if any, when rolling on the throttle. Decided to check/clean the KIPS valves and see what piston was in there. The KIPS was gummed up really bad and wouldn't move, and it was the stock piston (for 19 years?!). Noticed some slight gouge marks on the piston and cylinder wall, and after reading some posts, decided that I am shipping it out tomorrow to PowerSeal for strip, plate, and hone. Over the past few weeks I've been tinkering and ordering a few parts:
- Wiseco piston
- FMF Desert (had bent woods pipe on it) and Turbinecore 2
- Boyesen 607 reeds
- Clutch and throttle cables
- Stock 47 - 13 sprockets (had 52 and 12 tooth sprockets!!)
- Fuel petcock and fuel line
- Brake pads
- Air box mod
- Plugs
- Grips
- Shroud graphics
- Daystar fork boots
Once I get everything back together running properly I will set the sag and start working on the other suspension components. Here's a few pics of it after I brought it home.


Here are some photos after doing most all of the mods. Still have a lot of things I want to do to it though.




