Mastermind Meets a Brand New MS460

[Mastermind]

I love it when a new saw shows up for port work. This is will get the squish band cut rather than a popup. In all honesty I can't see any difference in performance, but being able to replace the piston without having any machine work done is desirable to a lot of my customers. So here we go.

It's got a smudge of glue from the tape that was part of the packing material. I'll get that off.

Never in my eyes has there been a better looking saw built than the MS460.

The muffler has been modded already. I'll add a factory dual port cover to keep the saw looking stock.

 

[wendell]

Criminy, following your threads is becoming a full time job.

 

[booger1286]

Good looking saw. Am i wrong or is it only helpful to raise the squish band on saws that are too close without a gasket?

 

[dh1984]

Dang Randy i wouldn't use that one i put it up on a shelf so everyone could look at it. And if they try to touch it find something to hit their hands with and say don't touch

 

[Mastermind]

I started with .032 squish with the base gasket installed. I want to take about .030 out of the squish band, then drop the jug back down to end up at .023.....

But first lets look at the jug as the factory had it.

It is sporting a Mahle jug.

Good casting and plating.

The transfer tunnels are pretty large too. The combustion chamber and squish band is a little rough though.

Intake ports seems tiny to me. The one in my 460 is huge in comparison.

 

[Mastermind]

Criminy, following your threads is becoming a full time job.

You should try building all these dang saws. Hell just keeping the area we test them at clear of cookies is a job.

Good looking saw. Am i wrong or is it only helpful to raise the squish band on saws that are too close without a gasket?

This saw would have been good without a gasket. What we are after is more compression. :msp_sneaky:

Here's the factory specs.

Squish: .032
Exhaust Duration: 156° = 102° ATDC
Transfers: 123° ATDC = 21° blowdown
Intake Duration: 145° = 72.5° ATDC

 

[Bowtie]

I wondered if it was a Mahle or Stihl casting, but I wondered that after it was in the mail.

 

[Mastermind]

Here's a shot of the squish band after cutting it.......turned out pretty good for my first try.

Some days taking a damn good picture is more than I can manage.

I so trying to show where the squish ended up.......I've got .065 now so I took .033 out of the band. I can live with that. :msp_smile:

 

[Mastermind]

I wondered if it was a Mahle or Stihl casting, but I wondered that after it was in the mail.

I was real glad to see that Mahle in the casting too.

I should have it finished tomorrow and get to run some fuel through it. Of course you know we will have to run it against my 460 to see how it stacks up to the older D shaped jug saw. :msp_biggrin:

 

[NORMZILLA44]

Gotta love that model too Randy! Awesome It is in good hands

 

[Bowtie]

I was real glad to see that Mahle in the casting too.

I should have it finished tomorrow and get to run some fuel through it. Of course you know we will have to run it against my 460 to see how it stacks up to the older D shaped jug saw. :msp_biggrin:

Right on. Thats what it's all about.

 

[wigglesworth]

You should try building all these dang saws. Hell just keeping the area we test them at clear of cookies is a job.



This saw would have been good without a gasket. What we are after is more compression. :msp_sneaky:

Here's the factory specs.

Squish: .032
Exhaust Duration: 156° = 102° ATDC
Transfers: 123° ATDC = 21° blowdown
Intake Duration: 145° = 72.5° ATDC

That exhaust is pretty darn high compared to most I've seen. Trans and intake are par for the course though....

 

[Mastermind]

Gotta love that model too Randy! Awesome It is in good hands

Thanks for the vote of confidence my friend.

I have a soft spot for the 046/460 That was my first big Stihl......I still have it too.

Right on. Thats what it's all about.

My old saw is a stout runner IMO. A damn 372 beat it though.

That exhaust is pretty darn high compared to most I've seen. Trans and intake are par for the course though....

I thought so too J. What do you think about the machining?

 

[wigglesworth]

I thought so too J. What do you think about the machining?

Its a bit rough where the squish band drops into the chamber, but its not the machinist fault, just the crappy casting on the chamber....

I got just the thing to fix it though, ill send you one with your box this week.

 

[Mastermind]

Its a bit rough where the squish band drops into the chamber, but its not the machinist fault, just the crappy casting on the chamber....

I got just the thing to fix it though, ill send you one with your box this week.

Wow.......when you blow it up it does look rough.

Please get out of my thread.

 

[ChainsawmanXX]

...Makes me wanna send you my 046.

Gonna wait for the video to make up my mind

 

[Jacob J.]

Its a bit rough where the squish band drops into the chamber, but its not the machinist fault, just the crappy casting on the chamber....

I got just the thing to fix it though, ill send you one with your box this week.

The "Wigglesworth combustion chamber clean-up system" is a winner...

 

[wigglesworth]

Wow.......when you blow it up it does look rough.

Please get out of my thread.

HAHA....

Its not your fault, its just the crappy casting. LOL The newer 460 jugs have the worst looking castings in the chamber ive ever seen.

The machine work itself looks great!!

 

[Mastermind]

The "Wigglesworth combustion chamber clean-up system" is a winner...

Yes Sir......Yes it is.

 

[Mastermind]

HAHA....

Its not your fault, its just the crappy casting. LOL The newer 460 jugs have the worst looking castings in the chamber ive ever seen.

The machine work itself looks great!!

OIC now you want back on my "good side".....

I ain't got nary one of em though.