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post #1 of 12 Old 12-16-2009, 12:13 PM Thread Starter
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crankshaft bearings?

Has anyone out there ever seen the lefthand crankshaft bearing fail on the KLR?
I am looking at a basket case where he claims the oil pump failed and killed the lh bearing, allowing the flywheel hit the pick-up coil causing a loss of spark.
When I look up the parts at an on line parts fiche, it shows the left bearing only available with the left crankshaft half.
For over $300. plus the oil pump. plus the pick up coil.

Any info will be appreciated.

'08 KLR650,
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'02 KTM 400 E/XC,
'05 ktm 125 sx (for sale)

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post #2 of 12 Old 12-16-2009, 03:02 PM
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Quote:
Originally Posted by kent soignier View Post
Has anyone out there ever seen the lefthand crankshaft bearing fail on the KLR?
I am looking at a basket case where he claims the oil pump failed and killed the lh bearing, allowing the flywheel hit the pick-up coil causing a loss of spark.
When I look up the parts at an on line parts fiche, it shows the left bearing only available with the left crankshaft half.
For over $300. plus the oil pump. plus the pick up coil.

Any info will be appreciated.
Kent -

I think that's a first. Doesn't that bearing practically live in an oil bath?

Did the oil pump fail due to starvation?? That seems to be the most common cause of lubrication related failures - forgotta put oil in it -, though it usually takes out the top end before the bottem end can die.

Tom

Tom
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post #3 of 12 Old 12-16-2009, 03:53 PM Thread Starter
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crankshaft bearings?

Quote:
Originally Posted by Tom Schmitz View Post
Kent -

I think that's a first. Doesn't that bearing practically live in an oil bath?

Did the oil pump fail due to starvation?? That seems to be the most common cause of lubrication related failures - forgotta put oil in it -, though it usually takes out the top end before the bottem end can die.

Tom

Tom
It is the first I heard of it too. The parts guy at Talladega Kawasaki (Confirmed what I was seeing on www.ronayers.com on line micro fiche) said that left hand bearing only comes on the crank, of which the left half of the crank is ONLY $300, plus I gotta press the crank apart to replace it. Though the right side bearing is available separatly.
I don't know, I am going to look at the bike sat am with cash in hand.
Owner had it dis-assed at a local shop then boxed it up without repairs.

Lets see; I saw some bottom ends on ebay....That would cover the pump. the pick-up coil, and the crankshaft/bearing. with parts left over, for less than the cost of the parts I know it needs.
I see a possible 705cc, some head work, big valves, sugar plums dancing in my head. Santa??? We could make a hotrod. Might get 42 horsepower out of it.
whoosh!

'08 KLR650,
'72 BMW R75/5 (Col. Klink),
'02 KTM 400 E/XC,
'05 ktm 125 sx (for sale)

"Hey, are you okay? Can you get up?
I thought you said you could ride"

All the best
Kent Soignier
www.gmdatl.com
the str8ner
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post #4 of 12 Old 12-16-2009, 06:08 PM
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Originally Posted by kent soignier View Post
Lets see; I saw some bottom ends on ebay....
Family newsgroup, buddy. LJ's kid reads this stuff, so we try to keep it clean...

I agree, though, it seems like you have a golden opportunity to build a heck of a KLR motor. The head seems to be the biggest obstacle to making good power, so some good headwork, big valves and maybe a bigger bumpstick will get you close once the 685/705 is in place.

Tom
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post #5 of 12 Old 12-16-2009, 06:51 PM
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post #6 of 12 Old 12-30-2009, 01:52 PM Thread Starter
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I went and looked this basket case over. I would have bought it for $600, but not for a grand.
It got the cam bearing surfaces as well as the crank, oil pump etc.
And you cannot buy just the left bearing, unless you get the entire crank, or at least the left half of the crank, which I can split and rebuild cranks, but the parts added up to too much.
pass

'08 KLR650,
'72 BMW R75/5 (Col. Klink),
'02 KTM 400 E/XC,
'05 ktm 125 sx (for sale)

"Hey, are you okay? Can you get up?
I thought you said you could ride"

All the best
Kent Soignier
www.gmdatl.com
the str8ner
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post #7 of 12 Old 12-30-2009, 06:31 PM
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Bummer.

Once that stuff hits the top end it;s pretty well going into the realm of "I'll take it off your hands so you don't have to carry it to the curb."

Woulda been a cool project if it was only the crank bearing gone.

Tom
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post #8 of 12 Old 01-21-2010, 06:27 PM
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Wow, $1K for a KLR with a cratered mill ??? I guess I get up early on the weekends and scour Craigslist well.....just got my '96 with 5K miles on it for $1K (cash of course). New tires and that weird odessey battery but I'm smiling all the way to the "tons 'o accessories" bank :-)

John

Farkled probably WAY too much, but good 20' footer for sure. '96 KLR, '06 HD VROD, (girl friend hauler), '05 HD Electra-Glide, heh it's a HD and I'm old now ;-) and I'm proud of riding a 800+ pound bike at my age :-)
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post #9 of 12 Old 01-21-2010, 08:20 PM
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The bike was run out of oil. No doubt. We've now seen several of these.

The crank is indeed splash lubed. There is a pressure feed to the rod bearing, although it also run in the oil bath. This feed runs oil up the rod also.

The other pressure feed runs up the back of the cylinder, in the external line, then lubes the intake camshaft, runs though the little tube to the exhaust camshaft. The r/h bearing is the end of the line, and this bearing always goes first when the oil supply dies.

all the best,
Mike
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post #10 of 12 Old 05-14-2011, 07:18 PM
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Motor help

Can anyone help. I just bought a 99 KLR with 9500 miles on it. Now here is the problem. The old boy lost the oil plug and ran it out of oil. He said it locked up. He put oil In it and it started back up. It seems to run alright but knocks when it is at an idle, sounds alright not perfect but alright over idle. I am thinking about going to the 685 big bore. How much other damage may there be? Thanks for anyhelp
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