Mastermind Meets The MS661 C-M

[nmurph]

Finished with the Mizzuz?

 

[blsnelling]

Finished with the Mizzuz?

Is the Mizzuz finished with him?

 

[Mastermind]

Finished with the Mizzuz?

For now......we had an excellent meal, and titillating conversation.......

 

[shootingarts]

Hu, From what I've studied on combustion chamber design, dwell time, and detonation.....it appears that the guys at Stihl have been reading the same stuff.

They have designed the quench area with a wide, flat band.....quite a lot wider than the 660. That in itself helps with detonation resistance. Then the shorter stroke allow dwell time to be shorter......again, that should make the engine more tolerant of detonation.......which is why I said it should handle poor fuel better.

Thanks! I'm always thinking about more than just detonation with fuel, the four cycle racing background. Total package might indeed be to help cover fuel. Wonder if Stihl is at least thinking they will have to be dealing with E-85 not too far down the road? Like I mentioned earlier, their designers ain't dummies, just having to meet different demands. May be hard to feel seat of the pants with the smoother performance but regardless of why they shortened the stroke and opened the bore I think this thing is gonna like modding more than the 660 it replaces.

I need to quit reading this thread, I need a new wood lathe next on my list of priorities. I don't need a 661, I don't need a 661, I don't need a 661, I don't need . . . .

Thanks again for the response, much appreciated. I will finger out these things eventually! "Fingering" is a legit word for me, a combination of figuring things out and hammering on whatever I am working on until it assumes the position!

Hu

 

[Saw Dr.]

If providing the free 661's is going to hurt someone financially, try looking in Stihl's corporate headquarters dumpster. They might have few thousand recalled units tossed in there. Hahaha!!!

Sorry, the Husky guys came and cleaned it out already. They had a roll of 391xp stickers and some grey spray paint waiting in the truck.

 

[LegDeLimber]

morewood said: ↑

“If you can make it to Old Fort we always go over to Terry's GTG.

Shea

PS-Randy always brings his latest and greatest toys.

Heck I could pick you two up on the way from Raleigh. Three that's almost a bus load right?

Sounds awfully tempting.
I guess i need to get my **** straightened out and see about getting to some stuff like this.

 

[hotjava66]

I think I'd rather get a brand spankin' new 2188 (ported) from/through MasterMind or Terry. Could probably also get a nice 32" Total bar with it for that price.

Sorry for the derail. Back to waitin' on Randy to have a 'productive' evening with his better 1/2...............and then put some more 661 teaser pics.

Got myself that identical setup for Christmas, don't tell the wife though

 

[windthrown]

Sounds like a husky

Never underestimate the power of the dark saws!

 

[chadihman]

Ok Randy the new 661 muffler is on it's way to 140 Cottle Ln. The 661 muffler is SS and is $88 list. My price was cost but wow I can get two AM car mufflers for that price. Do what you want with the muffler Randy and consider it a Christmas gift as it will show up Christmas eve. Santa saw your good deeds on all the work you put into the raffle saws and all.

Whats your plan and were you at with the 661 by now?

 

[Mastermind]

I've got it back together......I went ahead and modded this muffler.

 

[Mastermind]

The transfers got raised up to the card stock....



Of course it spent some time in the lathe....



Drilled out that weird looking baffle.....

 

[mdavlee]

So how's it run?

 

[Mastermind]

So how's it run?

I ain't started it yet.

 

[mdavlee]

Give me 3 hours and charge the spotlight

 

[Mastermind]

It's just another saw.....

 

[chadihman]

Can't tell how much on the transfers but looks like maybe your raising them enough to undo the loss from lowering the base. I'll take a guess. .040 off squish .045 off base raised transfers .045

 

[Mastermind]

I raised them to 122 atdc.

 

[Officer's Match]

It's just another saw.....

...and saw's are just a fad...

 

[bryanr2]

Give me 3 hours and charge the spotlight

I'll bring all the light we need.

 

[Mastermind]

You fellers are crazy.