Author Topic: Not a GOOD Day on the 500 AF  (Read 15583 times)

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Offline 1989kawasaki

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Re: Not a GOOD Day on the 500 AF
« Reply #15 on: March 11, 2011, 02:23:17 AM »
how much you want for the tecnosel seat?
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Offline jholt

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Re: Not a GOOD Day on the 500 AF
« Reply #16 on: March 12, 2011, 01:37:23 AM »
It will be a couple weeks before I start selling the parts off this one, Due to timing I will be riding it until I can start swapping everything out. But f you want it then I will make sure you get first shot at  it. $40.00
Thanks
Joel Holt
JMR Power Sports Inc.
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2008 KX 500af

Offline bruuuuup

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Re: Not a GOOD Day on the 500 AF
« Reply #17 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

Offline 1989kawasaki

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Re: Not a GOOD Day on the 500 AF
« Reply #18 on: March 16, 2011, 04:45:30 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

man..... i bet you cried after that, did you?
bikes

1977 RD400
1989 CR250
1988 CR500
1978 Z50
2009 Harley super glide custom

Offline jholt

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Re: Not a GOOD Day on the 500 AF
« Reply #19 on: March 17, 2011, 10:51:06 AM »
 I think a tear did roll down my cheek when I was tearing down.  :-(
Thanks
Joel Holt
JMR Power Sports Inc.
256-381-7556

2008 KX 500af

Offline Camo

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Re: Not a GOOD Day on the 500 AF
« Reply #20 on: May 24, 2011, 10:48:02 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

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.

2000 KX500
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2006 KVF 730 Nitrous
2005 KVF 700
2011 KTM SX450F
2008 KTM SX 144
2007 KTM SX 85
2011 KTM SX 65
2007 KTM SX 50 Senior Pro
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Offline sandblaster

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Re: Not a GOOD Day on the 500 AF
« Reply #21 on: June 22, 2015, 04:39:23 PM »
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...
The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline b4himdude

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Re: Not a GOOD Day on the 500 AF
« Reply #22 on: June 22, 2015, 05:20:03 PM »
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 .....
hell ,i,m so broke . if it cost a nickle to take a s**t, id have to puke.....

Offline evergreen

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Re: Not a GOOD Day on the 500 AF
« Reply #23 on: June 23, 2015, 06:06:15 AM »
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)
« Last Edit: June 24, 2015, 07:02:08 AM by evergreen »
English is not my main Language. Sorry for the Missunderstandings.

Offline MRDART

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Re: Not a GOOD Day on the 500 AF
« Reply #24 on: June 23, 2015, 09:27:22 AM »
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....