Wiseco Crankshaft Kits

beamer
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beamer
Edited Date/Time 4/9/2016 9:32pm
For a RM 250, are they a good choice or am I better off with something else??

I'm a big believer in OEM parts, but I don't think I could even buy the seals & gaskets for the price of this kit I found.
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Paw Paw 271
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Paw Paw 271 4/7/2016 6:54am
4/7/2016 6:54am Edited Date/Time 4/7/2016 6:56am
They are ok for your bike, but with any new crank it is best to have it trued prior to installing. This brand has a history of failures when installed without being properly trued. Don't just install right out of the box as it most likely is not trued.
FYI: I would not use this product line on any 4 stroke engine due to the failure rate.

Paw Paw
beamer
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beamer 4/7/2016 6:56am
4/7/2016 6:56am
Paw Paw 271 wrote:
They are ok for your bike, but with any new crank it is best to have it trued prior to installing. This brand has a history...
They are ok for your bike, but with any new crank it is best to have it trued prior to installing. This brand has a history of failures when installed without being properly trued. Don't just install right out of the box as it most likely is not trued.
FYI: I would not use this product line on any 4 stroke engine due to the failure rate.

Paw Paw
Interesting, would you say the same for just about any crank??
pete24
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pete24 4/7/2016 7:17am
4/7/2016 7:17am
dont even think about putting that junk in your bike if you have to use a cheaper crank then get a hot rods, but stock is best google wiseco cranks, and thank me later
BAMX
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BAMX 4/7/2016 7:46am
4/7/2016 7:46am
There are a number of older threads about Wiseco cranks. The consensus seems to be that they are or at least were junk. Personally, I have had good luck with Hot Rods cranks. You could also have someone rebuild yours pretty reasonably.

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Paw Paw 271
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Paw Paw 271 4/7/2016 9:00am
4/7/2016 9:00am
Paw Paw 271 wrote:
They are ok for your bike, but with any new crank it is best to have it trued prior to installing. This brand has a history...
They are ok for your bike, but with any new crank it is best to have it trued prior to installing. This brand has a history of failures when installed without being properly trued. Don't just install right out of the box as it most likely is not trued.
FYI: I would not use this product line on any 4 stroke engine due to the failure rate.

Paw Paw
beamer wrote:
Interesting, would you say the same for just about any crank??
Yes! ( but the failure rate of this brand in 4 strokes is very high. The 2 stroke failures are better, if the crank is trued prior to the install. Hot Rods are better, but here again it must be trued. )

Paw Paw
jsmx97
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jsmx97 4/7/2016 10:36am
4/7/2016 10:36am
Have your crank rebuilt with an oem or Pro X connecting rod. Wiseco cranks are absolute garbage.

Hot rods are a bit better, but on the RM250 they use plastic crank stuffers that i've seen distorted enough to rub on the cases.
jsmx97
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jsmx97 4/7/2016 10:38am
4/7/2016 10:38am
In fact, here is the pic!

beamer
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beamer 4/7/2016 10:53am
4/7/2016 10:53am
Thanks for all the info, have a guy that could rebuild mine think ill go that way!

This all started from my other topic on the bike spitting out all kinds of spooge.

I took it all apart and removed the old seal and I am able to wiggle the crank very slightly, which im pretty sure it shouldn't .

Its a little odd to me in a way, the bike doesn't vibrate or anything I do notice a very slight growl from down there but that's bout it.

Paw Paw 271
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Paw Paw 271 4/7/2016 11:59am
4/7/2016 11:59am
So it's the crank end bearings that are bad and not the crank, right?

Paw Paw
Missing_Muffs 4/7/2016 12:00pm
4/7/2016 12:00pm
beamer wrote:
Thanks for all the info, have a guy that could rebuild mine think ill go that way! This all started from my other topic on the...
Thanks for all the info, have a guy that could rebuild mine think ill go that way!

This all started from my other topic on the bike spitting out all kinds of spooge.

I took it all apart and removed the old seal and I am able to wiggle the crank very slightly, which im pretty sure it shouldn't .

Its a little odd to me in a way, the bike doesn't vibrate or anything I do notice a very slight growl from down there but that's bout it.

side to side wiggle ok.
up and down wiggle no good.
beamer
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beamer 4/7/2016 12:47pm
4/7/2016 12:47pm
Ya, looking at the end of the Crank Shaft from the seal side I can get a little movement up and down, as in up to cylinder and down to the floor.

I think the crank should be OK, re-buildable
CrGuy2T
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CrGuy2T 4/7/2016 12:56pm
4/7/2016 12:56pm
Total trash. I strongly advise against it. Send your crank to crank works.
Manco
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Manco 4/7/2016 3:00pm
4/7/2016 3:00pm Edited Date/Time 4/7/2016 4:09pm
pete24 wrote:
dont even think about putting that junk in your bike if you have to use a cheaper crank then get a hot rods, but stock is...
dont even think about putting that junk in your bike if you have to use a cheaper crank then get a hot rods, but stock is best google wiseco cranks, and thank me later
I second this. Wiseco cranks are chinese made junk. Go OEM if you can afford it. Otherwise go Hot Rods or Wossner to save some cash while maintaining quality.
Cancerman
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Cancerman 4/8/2016 11:20pm
4/8/2016 11:20pm
My RM125 was rebuilt with a Wiseco, check the alignment and run out, it met the OEM specs well within tolerance. Been in the bike going on 3 years now, runs perfect, revs to the moon, super smooth. Just my experience.
njracer46
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njracer46 4/9/2016 9:05am
4/9/2016 9:05am
Didn't even make it 25 hours in my old honda.

My friend just rebuilt his rm125 and bought one. I warned him over and over not to buy one, I even showed him multiple threads like this from google. He's very hard headed and thinks everyone messed up installing it. I said ok well I warned you, call me when it blows up.



beamer
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beamer 4/9/2016 11:41am
4/9/2016 11:41am
It's coming apart just waiting for my crankcase separator I ordered.

It already had a hot rods crank in it, from before my days with it. The piston is really scoured , and there is the start of some pitting in the cylinder head.
Cylinder is in decent shape , thankfully.

It's a Namura piston, I'm guessing that's a real hi-end piece
beamer
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beamer 4/9/2016 11:53am
4/9/2016 11:53am
What would be the cause of pitting like this ?? Could it be pieces of crank bearings since there definitely movement in the clutch side one ?







Head starting to pit as well
BobPA
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BobPA 4/9/2016 9:32pm
4/9/2016 9:32pm
There was definitely some metal dancing in there

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