Mastermind Meets The MS661 Again

[Mastermind]

Lower.

But the skirt is longer.

I'd need to cut even more from the base to get the compression I'm after. That would put the skirt of the piston would be down in the case a right good bit.

Here's a pic of the stock piston at BDC.

 

[coltont]

Hey Randy why do you suppose they switched to the metal flywheel again?

 

[MustangMike]

Thanks.

 

[Mastermind]

I'm not sure, but it could be for added inertia.

 

[CR500]

lets lighten the mood in a WNY kind of way lol

 

[coltont]

Wasn't that a problem with the 066s. Shearing the crank off at the flywheel side? Which is why they went to the ploy one.

 

[Mastermind]

Good point Colton.

 

[spencerpaving]

Lower.

But the skirt is longer.

I'd need to cut even more from the base to get the compression I'm after. That would put the skirt of the piston would be down in the case a right good bit.

Here's a pic of the stock piston at BDC.

yea that would be a problem...for every action there is always a reaction...darn it stihl..they did this on purpose!

 

[Mastermind]

lol

I hear ya Brett.

At this point epoxy seems to be the only good approach.

 

[MechanicMatt]

Lil derail, randy, you ever put a 064 piston in a 372 BB cylinder?

 

[Trx250r180]

You know you just gave stihl the new port mapping to next years jugs right ? Like they do not watch these threads and stuff .

 

[Mastermind]

I've used a 272 piston in a BB372 jug.

I didn't like the results, it lowered case compression too much IMHO.

 

[Gypo Logger]

Randy, I have a carpentry question.
I'm gonna start putting soffits under the eves. Do I need to put vent holes in the two pitched ends or just on the horizontal sides.
Here's a pic of the end in question.
Thx.

 

[Mastermind]

Looks like it will vent between the lath boards and the rafter.

 

[Trx250r180]

Do you have a ridge vent on the top of the roof ?

 

[Gypo Logger]

Sorry, lost the text, computer slow. No roof vent yet Brian.

 

[bryanr2]

I agree with Wiggs. Stop sharing so much of your trade secrets. No need in it at this point.

 

[AKDoug]

Gypo- You don't need to vent those runs. You need to vent the lower ends and either the ridge or the gable ends. To vent properly, the cooler air enters the lower vents and as it warms up it rises and vents out the top. This keeps the roof from icing up. However, with your steep pitch and metal roof, that is less of a concern than a shingled roof. Is your roof simply rafters or is it some sort of truss?

 

[treeslayer2003]

Well the proof is in the pudding.....or so I've heard that said.

With the intake raised......

this looks pretty good..........i don't think i want a m tronic.......looks pretty good lol. wish ya had some big oak and a 32 on it.

 

[SAWMIKAZE]

Sorry, lost the text, computer slow. No roof vent yet Brian.

Vented sofit is pointless if the air has nowhere to go , if you have a big enough ridge vent and vented sofit on the sides of your house it will breathe fine , my dad never puts vented sofit on gables , just gable end vents