Mastermind Meets The MS661 Again

[Mastermind]

Oh no Steven.......you are my Hero.

 

[Duane(Pa)]

I still say it's the chess player in you. Cause & effect, yin yang etc. I cant tape a freakin box shut, so two strokes are PFM to me.

 

[bryanr2]

Oh no Steven.......you are my Hero.

Ya know those of us that dont drink need a "smiley" similar to the "cheers" one .

something like....

 

[Mastermind]

I put my hand there......no kidding.

 

[Duane(Pa)]

I envy anyone that can spell La-zon-ya Lasagna!

That's the stuff aint it??

 

[Mastermind]

I have speel cheek.

 

[Magnum783]

This thread is amazing can't wait to see where it goes.

 

[Trx250r180]

I stihl don't like them........

 

[KG441c]

Im ready to see the dyno!

 

[MustangMike]

I just want to see it cut!

 

[Mastermind]

 

[bryanr2]

dont know what Im looking at but looks good.

 

[Stihlman441]

View attachment 394076

View attachment 394077

View attachment 394078

View attachment 394079

So are those three intakes different sizes to compare results ?.

 

[Mastermind]

So are those three intakes different sizes to compare results ?.

No Andrew, one is with unfinished Devcon, the next is after finishing, then next is a stock port.

The factory port ends up at 85* after machine work. That's not crazy low on a 90cc saw, but I would like to be able to cut more from the squish to get the compression a little higher. At 85*, that's as far as I will lower the jug.

Even then I can't raise the transfers quite as high as I'd like to.

So, I'm at 102/122/85 on the two jugs without epoxy.

The jug with epoxy in the intake is at 100/120/80.

 

[Chris-PA]

Interesting experiment. If you ever get in the mood to go slumming, look at the transfer port inserts in the newer Poulans. They use what looks like some sort of thermoset plastic to turn the open transfers into closed transfers. The rings don't quite touch it.

I don't know how that would help really, as you'd need some way to mold an insert, and some feature to retain it. Just food for thought.

 

[Mastermind]

I've been "slumming" before Chris.

Believe it or not, I've even ported a few of those little Pooolawns.

 

[Fire8]

Over my head

 

[fordf150]

If raising the floor gives you the results your looking for what is your plan of action On the remaining cylinders? Epoxy? Figure out an insert type piece?

 

[Mastermind]

That is a good question......

I really don't want to use epoxy on every MS661 I do. I can't see anything else working though.

The 661 turn out really strong without raising the intake.......but I feel the need to test a theory here.

 

[RiverRat2]

I don't think I'll change anything. I've been very happy with the gains I've gotten on this model.
Just send me a message.

40% I'd bet!!!! isn't that the magic numbah? you pro porters shoot for???