finally decided to pull it out and measure it

[Definitive Dave]

Got tired of wondering about the 064/066/660 case volume question, so I went all scientific with the graduated cylinders and whatnot.

I only used the 1122 series complete crankcases with cranks installed that I had on hand.
All crankcases rinsed with 6 month old 2 cycle mixed gas until clean.
Crankcases leveled and filled with measured amount of ATF until full to the same point.

early oval plug, flat top pto side 064 serial x169 held 80ml
early oval plug, big bearing 066 serial x443 held 86ml
late no plug, big bearing 066 serial x614 held 92ml
early oval plug small bearing 066 serial x245 held 76ml
late oval slope top pto side 064 serial x202 held 76ml
late no plug, big bearing 066 serial x642 held 92ml

in summary from smallest CC volume to largest
76ml - TIE early small bearing 066 and late 064
80ml - early 064
86ml - early big bearing 066
92ml - TIE both late big bearing 066

 

[Definitive Dave]

 

[Tractorsaw1]

Great work Dave, I didn't know there where 2 different top 064's, ugh could this just get more confusing?

 

[angelo c]

I'm not sure if the numbers will be certified unless you use "Stihl ATF" ....and don't try to cheap out with the "Husky ATF"...it won't last and revs like crazy....

PS..nice work

 

[quietfly]

this thread was nothing like i expected......

 

[Definitive Dave]

Great work Dave, I didn't know there where 2 different top 064's, ugh could this just get more confusing?

For you good sir a visual guide to identifying your series 1122 Stihl Chainsaw

 

[Zombiechopper]

excellent thread title for an excellent thread.

This does prove bacon, but I like bacon so it's ok.

 

[quietfly]

 

[stihl saws]

Excellent info here. I just discovered my 064 is a late one. Never knew about the case differences. Thanks Dave.

 

[Four Paws]

All the homophobes are missing this good tech!

Now, who is measuring the 7900 case. The 681 case?

 

[jake wells]

mines bigger,,,,,,,,,,,, uh oh wait,,,,, wrong thread

 

[Definitive Dave]

Anybody got a nice MS660 PHO that needs a new piston?
Mail it to me I will tear it down, fill it with red kool aid and then put a new OEM piston on it, check the squish ( gasket delete if you wish) and send it back to you.

 

[Mycamaro_68]

Is the burning sensation normal when using atf to measure your weanis? Maybe I misunderstood something!

 

[Definitive Dave]

Is the burning sensation normal when using atf to measure your weanis? Maybe I misunderstood something!

nicely done sir !!!!!!
a certain amount of discomfort is to be expected when measuring internal volume, I am hoping you didn't rip the head off first like I did with the chainsaws

 

[jake wells]

nicely done sir !!!!!!
a certain amount of discomfort is to be expected when measuring internal volume, I am hoping you didn't rip the head off first like I did with the chainsaws

** ouch **

 

[Mycamaro_68]

nicely done sir !!!!!!
a certain amount of discomfort is to be expected when measuring internal volume, I am hoping you didn't rip the head off first like I did with the chainsaws

Well nobody told me not to!

 

[jmssaws]

Anybody got a nice MS660 PHO that needs a new piston?
Mail it to me I will tear it down, fill it with red kool aid and then put a new OEM piston on it, check the squish ( gasket delete if you wish) and send it back to you.

I got one. Lol

 

[jmssaws]

I measured mine too dave,pics are loading. Shorter than it used to was

 

[jake wells]

I measured mine too dave,pics are loading. Shorter than it used to was

had to hit the zoom button huh heee heee.

 

[Definitive Dave]

I got one. Lol

you have my address, heck if you prefer to reassemble it your self I will cover shipping both ways and send ya the new piston back with the saw, heck as long as you are positive ( we can check serial number to be sure) that it is a 660 and not a 66, I could just use the complete crankcase (with crank installed) to measure the case volume.
I am going to pull the built 1122s down from the shelf tomorrow and see which versions I have up there as ported runners, but I am positive they are all 064 and early 066.
Dave