Fins Sexy Twins!!

[MillerModSaws]

Yep. That's the thoughts. Not many pistons in that size though.

I havnt checked baileys to see if they have the piston specs on this saw.

 

[MillerModSaws]

IIRC, there is very little clearance at bottom dead center between the case and piston

Your correct the cases are notched for piston clearance. That's why the make grinders.

 

[Deets066]

Nice work Carl!
Looks like your doin good in the chain sharpening as well.

 

[Locust Cutter]

Saw#1 Looked nice. Saw#2 was hauling the mail... I like the sound of that one!

 

[drf255]

Squish .024 on both saws?

 

[MillerModSaws]

Squish .024 on both saws?

No actually I have this one at .018. It come out a tad tighter than what I measured when cutting it. But that's ok. I'll pull a comp check tomorrow see what where putting out.

 

[Moparmyway]

No actually I have this one at .018. It come out a tad tighter than what I measured when cutting it. But that's ok. I'll pull a comp check tomorrow see what where putting out.

Thats why I love your threads ............ both saws done differently and the videos for us to see !
Great job Carl ........... #2 is angry !!
Curious to see what happens to #1 when you just get the same timing as #2.

PS .......... my 661 has been fine running with a tighter squish

 

[drf255]

Thats why I love your threads ............ both saws done differently and the videos for us to see !
Great job Carl ........... #2 is angry !!
Curious to see what happens to #1 when you just get the same timing as #2.

PS .......... my 661 has been fine running with a tighter squish

WTF?

I guess the rules don't alway apply. That's tight.

Carl, it's gonna be interesting to see the compression difference between the two saws. Were they run for the same amount so that ring breakin differences can be discounted?

 

[mdavlee]

Tighter the better if everything is nice and true you can do that. I ran a 372 for a little while at .012" no damage and higher compression. I did get it back to .019" when I sold it.,

 

[Moparmyway]

WTF?

I guess the rules don't alway apply. That's tight.

Carl, it's gonna be interesting to see the compression difference between the two saws. Were they run for the same amount so that ring breakin differences can be discounted?

I consulted with a "very trusted source" ................. it was just about a crapshoot, but some 066's did come with .016 from the factory

These 661's take several tanks to wake up to their surroundings after work is done ............... they keep getting stronger after each tank

 

[Deets066]

Tighter the better if everything is nice and true you can do that. I ran a 372 for a little while at .012" no damage and higher compression. I did get it back to .019" when I sold it.,

I like the tighter squish, I use to shoot for 020, now I'd rather run 16-18.
I've heard of some guys running .015 on 880's

 

[drf255]

Why do you like it.

I see a trend towards tighter squish and lower compression amongst the builders here.

 

[MillerModSaws]

WTF?

I guess the rules don't alway apply. That's tight.

Carl, it's gonna be interesting to see the compression difference between the two saws. Were they run for the same amount so that ring breakin differences can be discounted?

I can tell you saw#2 has been run more than saw #1 how much more idk. @fin460 maybe able to answer that.

 

[MillerModSaws]

Saw #1 has 185 comp
Saw#2 has 190 comp

Both saws will raise a tad as running especially saw #2 as it has made a total of 4 cuts. Saw #1 has been ran a little more.

 

[Moparmyway]

Why do you like it.

I see a trend towards tighter squish and lower compression amongst the builders here.

Not too sure about that, I have been seeing tighter squish, yes .............. but I am seeing higher compression. There was just a thread where some "grass roots" builders were posting gauge readings over 235# on larger displacement saws

 

[MillerModSaws]

Not too sure about that, I have been seeing tighter squish, yes .............. but I am seeing higher compression. There was just a thread where some "grass roots" builders were posting gauge readings over 235# on larger displacement saws

It depends on the saw imo. I can tell you from my testing the 7910 dolmar likes compression. The 441cm not as much.

 

[Jacob J.]

That is a 28" bar buried. It will not reach all the way threw that peice of oak.

No. 2 sounds really nice. It looks as though it has a lot of torque as well.

 

[MillerModSaws]

No. 2 sounds really nice. It looks as though it has a lot of torque as well.

It does for a 28" 8 rim. Lol. We will see how it likes a 36"

 

[MillerModSaws]

@Definitive Dave is hooking me up with a tach so hopefully I can get you some readings when it comes in.

 

[fin460]

How about this weather Carl, I need to go cut wood, but I don't want one of my creamcicles to become an icicle

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