MS462 Design Changes

[huskihl]

We have one of the earlier MS462's at work and a new top end has been on order since early December of 2021.
So, I guess my question is will Stihl ever furnish one ? Or, since it is a tree service would paying $400 or whatever for me to rebuild it be a bad investment in a questionable reliability saw ?
I'm thinking of telling them we can't do it whether I can scrounge up a top end or not.
It banged hard enough I had to re-center the crank shaft. May just be a bad idea.

I think they’re fine as long as the rpm’s are kept down (sharp chain) and no piss revving. More oil will slow the skirt wear

 

[ZeroJunk]

I think they’re fine as long as the rpm’s are kept down (sharp chain) and no piss revving. More oil will slow the skirt wear

Well, as luck would have it the kit did come in Tuesday. So, Stihl still has some somewhere. It runs fine. I hope to never see it again.

 

[Orangeinthebarn]

Yes. They aren’t quite as jazzy.

I don’t mean that in a bad way. Just maybe a chance for a different recipe. Before, I could only port them 1 way because I refused to raise the exhaust on them to make them more peaky. Now we have options

Yeah I’ve noticed the earlier ones are rated 6 hp the new ones are 5.9. Maybe not enough to notice much but definitely some differences

 

[Gearshifter]

Heres my project going ahead , Needs abit of work but I'll get there

 

[qurotro]

That is exactly where the previous posted crack location is...

 

[Funky sawman]

This time of year I help out at a local saw rebuild shop, on my bench are 11 ms462, older style, with cracked pistons, 3 of those also have stripped plug holes too. They are all waiting on cylinders. Sounds like they got 2 years of hard use out of them, all from a tree service company. Rest of the saws im rebuilding are 4 572xp bad crank bearings, and one ms440 in for restoration.
On the 462 subject, I actually see way more of those and 500i's come in that have stripped plug holes than cracked/broken pistons.
I would still own a early 462. But knowing what I know, I would just swap the piston out after a season of full time sawing. It appears that the crack is caused by wear, and excess piston skirt slap. Slapping skirts is my thing so there is that lol

 

[Funky sawman]

Lots of butthurt in that thread. LOL

So Randy, if I used the newer style piston in the old case and with old cylinder, would that combo work? Or what about a new style case with new style piston with old style jug?

 

[Mastermind]

So Randy, if I used the newer style piston in the old case and with old cylinder, would that combo work? Or what about a new style case with new style piston with old style jug?

No. None of it is mixable.

 

[Funky sawman]

No. None of it is mixable.

Ahh crap, I was hoping to build a hybred

 

[Moparmyway]

View attachment 306950

Re-posting for someone

 

[Beto88]

Buongiorno io il deviatore sotto pistone lo rotto per cui lo tirato via tutto .. potrei avere più prestazioni o meno secondo voi

 

[Mastermind]

Buongiorno io il deviatore sotto pistone lo rotto per cui lo tirato via tutto .. potrei avere più prestazioni o meno secondo voi

Molti di noi credono che sia lì per aiutare a raffreddare il cielo del pistone deviando l'aria in entrata nel pistone. Il funzionamento senza di esso può causare il surriscaldamento del pistone. Tuttavia, non credo che le prestazioni cambieranno.

 

[farminkarman]

Molti di noi credono che sia lì per aiutare a raffreddare il cielo del pistone deviando l'aria in entrata nel pistone. Il funzionamento senza di esso può causare il surriscaldamento del pistone. Tuttavia, non credo che le prestazioni cambieranno.

Since when did you pick up Italian?

 

[Mastermind]

Since when did you pick up Italian?

I'm tempted to make up some wild story about how I just naturally understand Italian because my IQ is higher than Albert Einstein's, but the truth is that I used Google Translate.

 

[farminkarman]

I'm tempted to make up some wild story about how I just naturally understand Italian because my IQ is higher than Albert Einstein's, but the truth is that I used Google Translate.

That is a handy tool...I have to use it often as a couple of our converting lines were made in Italy....and my IQ isn't that high

 

[Mastermind]

That is a handy tool...I have to use it often as a couple of our converting lines were made in Italy....and my IQ isn't that high

Neither is mine. LOL

 

[Matt Schmitt]

For a second I thought that’s impressive and then reality set in, and I’m like there’s no way he did that. Lol!

 

[Mastermind]

For a second I thought that’s impressive and then reality set in, and I’m like there’s no way he did that. Lol!

Thank you for the vote of confidence Matt !!!!

 

[Matt Schmitt]

Thank you for the vote of confidence Matt !!!!

I know a good ol country boy when I see one/ talk to one!

 

[Beto88]

Perché vedendo il carter modello nuovo non lo ha