Aftermarket crankshafts

Well with all the hype about aftermarket parts lately ,what are everyones thoughts on the aftermarket crankshafts ? seems like if can save a couple bucks what the heck . Anyone have any long term success with them ? Hows the sprocket bearing end holding up ? Have you had any rod bearing failures ?

Good questions.........I'm wondering the same thing???

Mastermind said:

Good questions.........I'm wondering the same thing???

Click to expand...

i think something might be on your porch sir

Aftermarket cranks aren't worth using.

thomas1 said:

Aftermarket cranks aren't worth using.

Click to expand...

pics ?

trx250r180 said:

pics ?

Click to expand...

Yes, please.

They work.

I used an AM crank to repair a loggers MS660, he usually gets a year from his saws, but the big end bearing went at six months. We put an aftermarket crank in it, and it lasted 8 months more. The failure was the big end bearing again but by that time the rest of the saw was junk anyhow.

The AM crank that comes with the NWP 390 shortblock looks better than the OEM crank. Machined lobes vs casted on the OEM, nicely polished. I'm not a metallurgist so I really can't give an accurate comparison to the quality of the materials, and I've never used one in any of my own saws so I can't say how they hold up. But for what it's worth, it looked real good.
.

SkippyKtm said:

I used an AM crank to repair a loggers MS660, he usually gets a year from his saws, but the big end bearing went at six months. We put an aftermarket crank in it, and it lasted 8 months more. The failure was the big end bearing again but by that time the rest of the saw was junk anyhow.

Click to expand...

So you're saying the OEM crank lasted 6 months and the aftermarket lasted 8?

I'm running a aftermarket crank in a MS 250 and it was used alot this summer

Just have to wait and see how long it last this 250 has alot of work done to the cylinder also :msp_wink:

opcorn:

thomas1 said:

Aftermarket cranks aren't worth using.

Click to expand...

Sorry if my post was misconstrued, I meant that I saw a blurry picture of one in 1994 and it looked blurry. I wouldn't put my name on something blurry.

They may have improved in the last 20 years, but I won't know for sure until my free one gets here.

thomas1 said:

Sorry if my post was misconstrued, I meant that I saw a blurry picture of one in 1994 and it looked blurry. I wouldn't put my name on something blurry.

They may have improved in the last 20 years, but I won't know for sure until my free one gets here.

Click to expand...

LOL; that sounds like another member here

gezz, someone asked for an am crank thread and now we have one.opcorn:

Mastermind said:

So you're saying the OEM crank lasted 6 months and the aftermarket lasted 8?

Click to expand...

Yes. I don't know what he was doing to his saw to trash the cranks like that though!

paccity said:

gezz, someone asked for an am crank thread and now we have one.opcorn:

Click to expand...

Magic maybe?

opcorn: