Ms462 crank question.

[huskyboy]

Oem 462/pin 96g. Meteor 461/pin 82g.

I am not so surprised, strato pistons are usually heavier and longer than “normal” saw pistons of a similar bore size.

 

[MustangMike]

Felt vibs will depend on the operator and the saw's anti vibe abilities, but a heavier piston will increase vibes.

Sometimes you just notice it more after you run a smooth 462 for a while!

 

[TX_Welder]

Changing the connecting rod will not change the stroke.

Boy you're sure right. Damn. What in the heck was I thinking. Where's the face palm emoji at.

 

[TX_Welder]

Its almost like Ive heard that before.

Almost lol. Is there a rock around here somewhere I can crawl under ?

 

[Fruecrue]

 

[huskihl]

I never noticed a difference

Me neither

 

[Red97]

Since the 572 was mentioned in first post...

48mm bore
39mm stroke

I’d be more interested in a bored 572 than a stroked 462.

I've been looking for a builder since I found out that info....

 

[drf256]

The longer rod will just increase dwell time at TDC and possible allow more pressure to momentarily build before the slug is pushed down on. Also less sidewall pressure on the piston against the intake side bore. At least that’s the theory.

Not worth the work IMHO.

 

[Deets066]

The longer rod will just increase dwell time at TDC and possible allow more pressure to momentarily build before the slug is pushed down on. Also less sidewall pressure on the piston against the intake side bore. At least that’s the theory.

Not worth the work IMHO.

A longer rod wouldn’t be worth anything. But 2 mm more stroke... then you might have something.

 

[TX_Welder]

Where can I look up stihl part numbers ?
I want to compare crank bearings of various models.

 

[Cobby08]

This was my line of thinking as well. I really don't think the cranks are going to be anything similar. That's why I was mainly wondering what size the rod bearing and wrist pin were. Rob the longer rod and put it on the 462 crank. Surely a decent machine shop could handle it.

I used to be a kawasaki tech and I remember in a few of the service manuals they had procedures in them to change the rod bearings pressing the cranks apart. There were some special tools involved for reassembly but nothing that couldn't be fabricated.

You may sacrifice a little throttle response with the longer stroke but I doubt it would be that bad. Of course the whole assembly would have to be balanced. You can always go lighter on a crank but heavier will get you in a bind every time. It's only a matter of time.

If somebody gets a crank out of a 462 I'd be interested in the dimensions. Main bearings, crank shaft, rod bearing size, wrist pin etc... should have measured my wrist pin when I had it apart.

Put me on the list for a 462 carcass as well if anybody runs across one.

Hold on, I haven't been on the site in a while.

 

[Cobby08]

Which dimension are you looking for and on which crank?


Sent from my iPhone using Tapatalk

 

[TX_Welder]

I wan

Which dimension are you looking for and on which crank?


Sent from my iPhone using Tapatalk

I wanted to see if the 462,461,460,441, 440/044 shared any of the same bearings.

If you had crankshaft sizes for any of those that would be helpful.

 

[qurotro]

I wan

I wanted to see if the 462,461,460,441, 440/044 shared any of the same bearings.

If you had crankshaft sizes for any of those that would be helpful.

It does. They use 6202 on fw side and the other side is a lengthen outer race 1128 bearing on many models.

 

[Fruecrue]

I wan

I wanted to see if the 462,461,460,441, 440/044 shared any of the same bearings.

If you had crankshaft sizes for any of those that would be helpful.

Do you own a 462?

 

[TX_Welder]

Do you own a 462?

I do. Just didn't want to dismantle it until I had some info. Looks like I'm going to have to rip into it though to see just what I've got to work with. Not much out there on these saws yet. Or, I need to find a donor. There's one on ebay right now for $455 last I saw it but it has busted cases.

Currently mine has a muff mod, base gasket delete and a timing advance. It runs pretty good. I should probably just leave it alone, but I can't lol.

 

[Fruecrue]

Shouldn’t be too bad to tear down and measure.
Has to be done if you’re going to end up with a different stroke.

No balls, no babies!!!

Use this advice at your own risk (Coming from a man with 5 babies). I cannot be held responsible for saw damage, equipment downtime, child support, etc.
May cause migraines and / or anal leakage, ask your doctor before use.

 

[huskyboy]

I do. Just didn't want to dismantle it until I had some info. Looks like I'm going to have to rip into it though to see just what I've got to work with. Not much out there on these saws yet. Or, I need to find a donor. There's one on ebay right now for $455 last I saw it but it has busted cases.

Currently mine has a muff mod, base gasket delete and a timing advance. It runs pretty good. I should probably just leave it alone, but I can't lol. View attachment 261551

Do you think it lacks torque? Is that why you want to modify it? Are you wanting a occasional use fun saw or is this something that will actually be worked regularly? IMO I would first try having the base/squish machined before stroking it. You might get the torque you are looking for from the increased compression and changing the timing numbers.

 

[Fruecrue]

Do you think it lacks torque? Is that why you want to modify it? Are you wanting a occasional use fun saw or is this something that will actually be worked regularly? IMO I would first try having the base/squish machined before stroking it. You might get the torque you are looking for from the increased compression and changing the timing numbers.

Dammit Mason.
We’re trying to talk him IN to stroking the saw, not OUT!

 

[TX_Welder]

Do you think it lacks torque? Is that why you want to modify it? Are you wanting a occasional use fun saw or is this something that will actually be worked regularly? IMO I would first try having the base/squish machined before stroking it. You might get the torque you are looking for from the increased compression and changing the timing numbers.

Honestly the first time I ran it I felt like I could lean on my 441 a little more than the 462. With a 25" bar. That was running the 441 one day, got the 462 home and ran it the same way and I caught myself thinking, man, I traded my 441 for this ? The 462 came to me second hand from a guy that had and no longer needed two of them. Said it had five tanks through it.

I'm an occasional user at best. Mainly just cleanup and maintenance on the family property.

The quest for more torque comes from seeing some 461's beating up pretty badly on 462's. And just my curiosity in general. I can't help but tinker.