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Old 04-11-2011, 05:57 PM   #1
agentjayjay
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ex500 siezed, what now?

Went to denny's last week, came back, turned the key, then engine started, made a clunking noise, and then stopped. Refused to turn on again.
Thought it was the battery, so tried to jump it, made more clunkly noise, and then stopped.
Next day I went back, added some oil, tried it again, it idles! I tried to drive out of the parking lot, it clunked again, so I got it towed to my house.
A few days later, I opened the alternator side and tried to turn the flywheel, it was stuck.
I probably need a new motor, so where can I find a (gently) used ninja ex500 motor in town? Or can I fix this? If so, how?
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Old 04-11-2011, 06:00 PM   #2
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Call sam's motorcycle sales 713 862 4026. They have a few motors.
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Old 04-11-2011, 06:53 PM   #3
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so, there's no way of fixing it? I'm considering all options here.
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Old 04-11-2011, 06:56 PM   #4
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How much money you got...lol Just about anything can be fixed.
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Old 04-11-2011, 07:00 PM   #5
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It will likely cost more to fix it then replace it with a used engine. Start googling for a replacement.

At a minimum its gonna need the crank turned, rods resized and bearings....That is if the crank isn't messed up TOO bad....which it likely is.....not to mention if the top end got tore up from a lack of oil...And ofcourse a full cleaning internally and rebuild.... Prolly looking at $1k+ if you pull it yourself...

"Oil.... Does an engine good."
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Old 04-11-2011, 07:13 PM   #6
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and if i do get a used motor, can i get a warranty of some sort?
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Old 04-11-2011, 07:22 PM   #7
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what if i use a vulcan 500 motor?
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Old 04-11-2011, 07:58 PM   #8
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what if i use a vulcan 500 motor?
facepalm
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Old 04-11-2011, 08:21 PM   #9
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guess no on the vulcan engine, then.
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Old 04-11-2011, 08:47 PM   #10
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facepalm




ya that's a no go on the vulcan 500

but it's a ninja why dont you just find a zx6r motor and put that on there.. it can be a sleeper 500 lol...


btw where are you located? if you scrap/throw away that 500 motor, don't give it to me
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Old 04-11-2011, 10:15 PM   #11
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saw some pictures of a zx6r engine, doesn't look like it would fit on a ex500 frame...
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Old 04-15-2011, 01:00 AM   #12
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ok, so if i want to fix it myself, how should i proceed?
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Old 04-15-2011, 07:27 AM   #13
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Buying an engine is the cheapest way. I'm not positive but I think average motorcycle labor rate is around $50. That adds up quick. I would think you could find a motor for $400 or less. Keep in mind these are not high demand motors. When they tell you 6, 7 or $800 just for the motor. You can definatelly talk them down.

This is a good way to learn a little about bikes. Motor swaps with the same motor are easy. You could always have a have a "Motor Swap" Meet & Greet at your house. Should be 3-4 hours out and in. If that. Plus, you now have a few spare motor parts laying around.


I'm not a kawi guy go i'm not just guessing. The only motor that MIGHT be close is a 650r. I think its a inline twin, but im pretty confident its not a bolt in deal.

good luck...

Last edited by albertinhouston; 04-15-2011 at 07:30 AM.
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Old 04-19-2011, 09:06 PM   #14
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what if i replaced the broken parts, wouldn't that be cheaper still?
or if i open it and find out what's stuck?
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Old 04-20-2011, 09:07 AM   #15
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Quote:
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what if i replaced the broken parts, wouldn't that be cheaper still?
or if i open it and find out what's stuck?
You have to consider that something getting "stuck" likely has quite a list of things that became damaged in the course of getting stuck.
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Old 04-20-2011, 09:24 AM   #16
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best fix is cut your losses and buy a honda IMO.
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Old 04-20-2011, 11:35 AM   #17
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if you've got full coverage, tie it to the back of a truck and GO! total that ho.
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Old 04-20-2011, 11:43 AM   #18
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if you've got full coverage, tie it to the back of a truck and GO! total that ho.


op, i think you're underestimating what it takes to actually rebuild a motor. yes, it MAY be something relatively small, but with what you have described, you will possibly spend more than what you probably paid for your entire bike. The motor swap should be fairly simple with your 500. bottom line is just buy a new, used motor, and save yourself, time, money, and headache. win, win, win.
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Old 04-20-2011, 09:14 PM   #19
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That motor is super simple(see ebay link)

http://cgi.ebay.com/ebaymotors/KAWAS...Q5fAccessories

That's an 07 for $650. I'm not sure what year your bike is but it's going to be in the $400-800 range after shipping.

Get a cheapo set of tools from harbor freight and get to work....or if you like to tinker but don't have tools get some decent stuff from sears; they tend not break as often as the cheapo harbor freight stuff but you'll pay quite a bit more.

Then just dig in....LOL I may have a biased on view the difficuly though. I work on cars for a living and bikes on the side but if you can take apart a bmx bike you can do this motor swap.
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Old 04-21-2011, 09:57 AM   #20
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How many miles did it take to blow?
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