ms361 bad crank

[TBrown]

Picked up a 361 off craigslist that was locked up. Saw looks nice. Took it apart today, cleaned it up and it passed vacuum test. Found big end rod bearing shot and a gouge below intake port. Anyone have experience with aftermarket crank and cylinder kit? I was thinking about having this saw ported also.

 

[chadihman]

I cant tell how bad that groove in the cylinder is but you might be ok with it. I cant imagine a small grove would cause any problems below the intake port. You wont loose any compression maybe just a little intake charge. If its a oem jug I'd try it out. Cranks are the heart of the engine. Maybe you should look for a good oem.

 

[TBrown]

The jug also has the top fins with the cover mount broken off. It could be rewelded if the gouge isn't critical. I will have to start looking for a crank. Too bad a 460 crank isn't the same, I have two extra ones.

 

[Naked Arborist]

Be very careful what you put in that bottom end. Those saws were built to scream. It ain't no torque monster the power is on the top end above 10,000. Jug pics please.

 

[TBrown]

Here are some pics. Are crank problems common on the 361?
Well I have pics bit can't seem to get them to attach using my phone

 

[blsnelling]

I'd be suspicious of the crank bearings as well.

 

[mile9socounty]

I have 3 or 4 361 cranks out in my shop that look just like that. A couple 362 cranks as well. Best bet is to get another OEM crank bud. Used or new. Bearings too.

 

[TBrown]

Any ideas on price of new crank. I took new pics but can't seem to attach now

 

[mile9socounty]

No sir I haven't the foggiest. I can tell you if you buy from a dealer it won't be cheap. Flebay, Swap meet or a post in the trading post.