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Posted: November 25th, 2009, 6:28 pm
by FZ1426
What size is your main jet and what altitude?
Posted: November 26th, 2009, 5:50 pm
by RideRed
AlisoBob wrote:If the piston was too tight, It would not have waited 4 years to do this.
I guess I don't understand? Do I need to go find and photo copy the reciept for the rebuild 4 years ago? Like I said, It worked great, it ripped all summer until now.
Re: HELP! My CR500 Failed...Seized Then No Comp???
Posted: November 26th, 2009, 6:10 pm
by gregrobo
97CR500R wrote:Ok,
I was riding around the my house, lots of back roads and I was riding for about 35 minutes. I got on a paved section and went "all-out" for a 5th gear pinned run....It worked great for about 10 seconds then the motor locked up at about 70mph! By some stroke of common sense I pulled the clutch in and coasted to a stop. It was a wild ride for a few seconds!!!
This has happened to me before, about 4 years ago and the bike restarted just fine. Not this time. It seems to have no compression, heck you could kick it over by hand. It just wont fire...real weird.
It was about 30 degrees outside. Any ideas? Thanks!
did you back the throttle off before it siezed
Posted: November 26th, 2009, 9:00 pm
by RideRed
I might have, but I can't honestly remember all the details. It needs rebuilt at any rate.
Posted: November 26th, 2009, 10:58 pm
by dannygraves
lack of lubrication. some oils especially castor based oils like 927 can separate out in cold temps, if you don't shake the can and pour it, you could have just poured gas and left the oil in the can.
that scoring is not heat, that is lack of lube. period.
Posted: November 27th, 2009, 2:00 am
by CR500R7
Maybe picked up the wrong gas can that had no oil in the gas possibly.
Either way Bummer Dude.
Posted: November 27th, 2009, 12:43 pm
by RideRed
CR500R7 wrote:Maybe picked up the wrong gas can that had no oil in the gas possibly.
Either way Bummer Dude.
Nope. I mixed it 32 to 1, just as usual.
Posted: November 27th, 2009, 6:21 pm
by 100hp honda
castor oils can seperate. could be what happened. pure castor actually gels at about 20* and its almost impossible to mix.
Posted: November 27th, 2009, 6:32 pm
by dannygraves
I've had issues with storing castor for long periods. it tuns to gel in the float bowl and plugs up the pilot, I could see the same effect happening in a gas can especially in really low temps.
did you mix the gas that morning, or did it sit over night?
Posted: November 28th, 2009, 1:25 am
by CR500R7
97CR500R wrote:Nope. I mixed it 32 to 1, just as usual.
Man it's sad to see a CR500 get sick / injured.
Posted: November 28th, 2009, 7:53 am
by RideRed
I mixed it about 20 min before the ride. It probably was on its last leg anyways because the last time it was rebuilt was about 4 years ago.
Posted: November 28th, 2009, 8:41 am
by AlisoBob
97CR500R wrote: It probably was on its last leg anyways because the last time it was rebuilt was about 4 years ago.
The clearence gets bigger over time, not smaller.
Posted: November 28th, 2009, 8:45 am
by FZ1426
WHAT SIZE IS YOUR MAIN JET AND WHAT ALTITUDE!
Posted: November 28th, 2009, 11:22 am
by 100hp honda
this guys has same symptoms
[youtube]
http://www.youtube.com/watch?v=ipZycyxQzpw&NR=1[/youtube]
Posted: November 28th, 2009, 1:17 pm
by RideRed
AlisoBob wrote:97CR500R wrote: It probably was on its last leg anyways because the last time it was rebuilt was about 4 years ago.
The clearence gets bigger over time, not smaller.
Jeez...I can't win with you Bob, The results are the results...I don't know how it got the way it is because I don't know jack shit about the technical side of these motors.
Posted: November 28th, 2009, 5:54 pm
by CR500R7
Posted: November 28th, 2009, 6:02 pm
by AlisoBob
97CR500R wrote:[Jeez...I can't win with you Bob, The results are the results...I don't know how it got the way it is because I don't know jack shit about the technical side of these motors.
It isnt about winning, its about finding the
cause , so you dont blow your shit up on the first kick once its rebuilt.
If it ran for 4 years, there is no mechanical reason for this to have happened.
Posted: November 29th, 2009, 2:31 pm
by 100hp honda
i probly shouldnt laugh at the seized motors on the other site but sometimes its damn funny
. damnit now im laughing again
Posted: November 29th, 2009, 2:35 pm
by RideRed
100hp honda wrote:i probly shouldnt laugh at the seized motors on the other site but sometimes its damn funny
. damnit now im laughing again
Yea, there are a few over there, but rest assured I'm not laughing about mine.
Posted: November 29th, 2009, 2:39 pm
by RideRed
Almost the same symptoms, I just don't have the "metal-on-metal clank" sound he describes. Everything else was very similar!
Posted: November 29th, 2009, 3:07 pm
by dannygraves
one happened just yesterday at dumont... and it was my old gen-4
Posted: November 29th, 2009, 7:38 pm
by CR500R7
Lucky it wasn't your KX450F.
If that thing blows you are going to cop some stick for it.
Posted: November 30th, 2009, 9:24 am
by dannygraves
after watching those kx500s in action, I think I will be the first to do a gen-2 kx500af if I were to grenade the kawi
Posted: November 30th, 2009, 8:23 pm
by CR500R7
If you maintain it well I can't see it blowing up for awhile, if ever.
A KX500AF would be wicked though.
Posted: December 1st, 2009, 7:34 am
by BigSteve
I hope you guys know, you can't fix stupid.