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Author Topic: Not a GOOD Day on the 500 AF  (Read 15538 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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1977 RD400
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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
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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
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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 »
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

man..... i bet you cried after that, did you?
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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.  :-(
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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 »
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

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.

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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
2004 Suzuki RM 65 (Kawie)
2008 Victory Hammer
2006 CBR1000

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...
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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 .....
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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 »
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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....
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