385 XP, preventative bearing replacement?

[vtfireman85]

I have a 2004 385xp, it has spent a fair amount of time on the Alaskan mill and cut an awful lot of firewood. I recently discovered discussions about crank bearing failure, assuming there is an updated bearing, should they be replaced preventatively? Or if i have made it this far it isn’t a problem?
Thanks
Seth

 

[Lightning Performance]

I have a 2004 385xp, it has spent a fair amount of time on the Alaskan mill and cut an awful lot of firewood. I recently discovered discussions about crank bearing failure, assuming there is an updated bearing, should they be replaced preventatively? Or if i have made it this far it isn’t a problem?
Thanks
Seth

@spike60

Give him a week or so to respond.

 

[huskihl]

I believe they just need more oil in the mix

 

[Backstage]

So it's not actually doing anything wrong. But you want to tear it apart and fix things on it?

You’ll fit right in here.

 

[vtfireman85]

So it's not actually doing anything wrong. But you want to tear it apart and fix things on it?

You’ll fit right in here.

I changed the oil pump on my wife’s Saab because they were known to be an issue, I just wondered if it was good maintenance. Milling is tough on them.

 

[thenne1713]

I believe they just need more oil in the mix

Just watched youtube 25:1 vs 50:1, and amazingly, the 25:1 RAN 4'c hotter (idle) to 40'c HOTTER (in the bucking cuts) (cylinder and muffler temps) than the 50:1. MY thought was he did NOT RE-TUNE for EACH mix, but I have always suspected/ preached that result without retune, as (more oil per volume of mix)= less gas= LEANER= hotter. Always made sense to me? LINK if you care to watch:

 

[huskihl]

Just watched youtube 25:1 vs 50:1, and amazingly, the 25:1 RAN 4'c hotter (idle) to 40'c HOTTER (in the bucking cuts) (cylinder and muffler temps) than the 50:1. MY thought was he did NOT RE-TUNE for EACH mix, but I have always suspected/ preached that result without retune, as (more oil per volume of mix)= less gas= LEANER= hotter. Always made sense to me? LINK if you care to watch:

It would definitely be leaner, and therefore probably hotter. Had he retuned it so that it was turning the same rpm, I’m sure the results would be different. All I know is that the saws I rebuild are dry inside and the owners say they were run at 50:1. Bearings with oil in them last a long time

 

[Lightning Performance]

It would definitely be leaner, and therefore probably hotter. Had he retuned it so that it was turning the same rpm, I’m sure the results would be different. All I know is that the saws I rebuild are dry inside and the owners say they were run at 50:1. Bearings with oil in them last a long time

Oil is fake news. You just need more gooder gas

 

[Gord404]

Sometimes the sealed bearing was not a tight enough fit onto the crank and after a while they would spin on the crank therefore not only wearing on the crank but causing an air leak, - rebuilt lots of 385-390's with this problem but not all do, probably a bunch of poor fitting bearings were used at one time or another.