066/MS 660 port #'s. Please share your stock #'s

[Deets066]

No, didn't feel it with the base gasket in.
When the gasket is out it will roll over with ease but have a slight catch, which you also noticed.
Now, when you plug the decomp and put the spark plug in it pulls over very hard, not just too much comp. but not quite right. So I think I can take care of it when I cut my squish and base, I'll just give her a little extra room than I usually would

 

[MillerModSaws]

I just got this one in. Here's the initial numbers

 

[Deets066]

Looks like it needs help

 

[Mastermind]

Take .060 outta the squish and raise the transfers wayyyyy up.

 

[Deets066]

Take .060 outta the squish and raise the transfers wayyyyy up.

Randy, I have .030 out of squish all ready, the new KS piston has a longer skirt than original. I have about.047 left on skirt before it freeports. How much more should I take?

 

[MillerModSaws]

Take .060 outta the squish and raise the transfers wayyyyy up.

This is for a logging company. They run a 24" bar with rakers ground down .050". I was gonna go 120 sloped to 122. Unless ya think 118 sloped to 120 wld pull the ground takers good. I have my 066 seat at 120 flat but it was 98 to start with on exhaust.

 

[Mastermind]

Randy, I have .030 out of squish all ready, the new KS piston has a longer skirt than original. I have about.047 left on skirt before it freeports. How much more should I take?

Take .040 more.

 

[Mastermind]

This is for a logging company. They run a 24" bar with rakers ground down .050". I was gonna go 120 sloped to 122. Unless ya think 118 sloped to 120 wld pull the ground takers good. I have my 066 seat at 120 flat but it was 98 to start with on exhaust.

118......no slope.

 

[MillerModSaws]

118......no slope.

Ty. I don't know if the numbers help but I just measured the height on this 066 jug and exhaust port sets .035" lower than the 660 jug.

 

[wcorey]

Checked three times, but this doesn't explain the catch I'm feelin. Tomorrow I'll spray blueing on piston and roll her over a few times, maybe I have a high spot somewhere??

Squish cut by .030, no contact at .038, contact at .017...
Did you maybe leave a slight ridge in the bore where you cut the squish?

 

[stihl for life]

View attachment 372889 I just got this one in. Here's the initial numbers

One ugly start to a 660 . 2 years of logging really beat down on a saw .

 

[Deets066]

Squish cut by .030, no contact at .038, contact at .017...
Did you maybe leave a slight ridge in the bore where you cut the squish?

It's a very good possibility, and kinda what I been thinking. I plan on cuttin more out, when I get time to get it over to the shop

 

[Mastermind]

I "touch off" .040 down the bore after finding the top of the jug. There is always some weirdness at the very top......

 

[blsnelling]

View attachment 372889 I just got this one in. Here's the initial numbers

Should be ready for a pipe. High exhaust, lots of blowdown...

 

[wigglesworth]

It's a very good possibility, and kinda what I been thinking. I plan on cuttin more out, when I get time to get it over to the shop

I bet u have a ridge up twords the top. Either that, or your feeling the difference between worn plating and new plating...

 

[Mastermind]

What would you know about worn plating......you ain't run a saw enough in your life to wear any damn plating.

 

[wigglesworth]

What would you know about worn plating......you ain't run a saw enough in your life to wear any damn plating.

Oh, go touch off on something.

 

[MillerModSaws]

Should be ready for a pipe. High exhaust, lots of blowdown...

Hmmmm! How long exactly do think it wld take them to rip off a pipe in the logging industry's. Lmao. One of my local loggers logs walnut. He will destroy, smash, whatever a saw before he splits a walnut. Lol.

 

[blsnelling]

My comment was just to point out how bad those port timing numbers are for a work saw.

 

[Mastermind]

Oh, go touch off on something.

When I grow up, I wanna be like you.