Maintenance & Technical > KX500 Aluminum Frame Conversion (AFC)
Not a GOOD Day on the 500 AF
Camo:
--- Quote from: bruuuuup on March 16, 2011, 04:36:38 AM ---Man that sucks.....I had the same type of thing happen after my build, the motor maybe had 2 hours on it and the rings came apart and ruined everything. It was a brand new motor also.... Oh well it happens I guess
--- End quote ---
Looks like a classic case of detonation. Mine was bad fuel. I've had one month old race gas in my sled (I live up north) and blew it up in less than 5 minutes of ride time.
sandblaster:
I know this is a resurrection of the dead but I wondered what happened with this build?
I also wonder what the jetting and riding altitude was?
I'm using a Wossner rod in all my builds... So far no issues...
b4himdude:
ouch man, ive been there . not so long ago either. that sucks. i didnt have the front of it torn off like that but the same results to a smaller degree the rod went through the same place.. and mine was a 95 k5, that i picked up a 93k5 to rebuild with. that not just a bad day. thats a f...d day in my opinion. sorry about the loss .....
evergreen:
My first thought was there was too much stress between crank case and motor mount. Are you sure the rod was broken first? I never saw that before.
The brown oxides on the right break area looks like there was a crack before the big damage has come. Compare the right and left fracture surface or the break above. (Photo of the crank case upper side)
MRDART:
Back in 1993 I was practicing my starts and the piston decided to disintegrate, it bent the small end of the rod slightly... The pin made 2 deep ditches in the forward cylinder wall...
Expensive repair....
Navigation
[0] Message Index
[*] Previous page
Go to full version