Need 066-660 Schoolin

[Poleman]

Two runners are possible but the owner wants one made of the two.
660 cylinder would clean up easy and just need a piston. Owner wants Red light top on 660 to make a running saw. Not sure what he will do with left overs.

Personally I would fix the case on the Red Light and put a piston in the 660 and the other parts needed for it and have two saws but that’s me.

 

[Deets066]

Two runners are possible but the owner wants one made of the two.
660 cylinder would clean up easy and just need a piston. Owner wants Red light top on 660 to make a running saw. Not sure what he will do with left overs.

Personally I would fix the case on the Red Light and put a piston in the 660 and the other parts needed for it and have two saws but that’s me.

Tell him the RL cylinder won't fit on the new 660 case.

 

[RI Chevy]

Tell'em to buy a Hooskie.
Lol
Stihl's are junk, so take the Stihl's off his hands.

 

[Chainsaw Jim]

The 660 of the two saws is actually a short case. Both cases are the same.

 

[Deets066]

The 660 of the two saws is actually a short case. Both cases are the same.

How do you figure?

 

[Chainsaw Jim]

How do you figure?

I asked poleman to send me a pic that had a better angle view than the originals he started this thread with.

 

[Poleman]

Lol...... trust me I’ve thought of different easy to keep the RL intact....

 

[Moparmyway]

The 660 of the two saws is actually a short case. Both cases are the same.

I asked poleman to send me a pic that had a better angle view than the originals he started this thread with.

View attachment 106744
View attachment 106745

They never made a short case 660

The saw in the picture is definitely a short case, I agree 100%, however I don’t believe its an original case 660

I’d check the flywheel and crank

Someone probably put it together with 066/660 parts mixxed together

 

[Deets066]

I'd have to look but there are 3 or 4 different cases.

 

[jmester]

They made short case metal flywheel small crank and short case poly flywheel large or 660 crank. I don't think they where ever 660 with the short case thinking they were only 066

 

[jmester]

1122 020 2102 aluminum flywheel short case
1122 020 2103 poly flywheel short case

 

[blsnelling]

I had a short case poly flywheel 066.

 

[Chainsaw Jim]

I had a short case poly flywheel 066.

I have a nice clean one you'd love to put on your bench. Lol

 

[Chainsaw Jim]

They never made a short case 660

It was being called that, so I went with the flow to avoid confusion about which saw I was taking about.

 

[huskyboy]

What’s the most desirable case/flywheel?

 

[Moparmyway]

It was being called that, so I went with the flow to avoid confusion about which saw I was taking about.

Since when do you “go with the flow” ?

 

[MustangMike]

Was gonna say, never heard of a short case 660!!! Just didn't happen.

However, late 066s were identical to 660s (except the model #).

 

[jacob j.]

The flat-top poly flywheel 066 was a short-case poly flywheel saw. They came out in 1996 in North America. For me, that's one of the best 066/660 saws. The cylinder had good port timing-not as good as the "Red Light" saws but almost.

That lasted until Stihl switched over to the "Optimized" cylinder and piston (I think around 1998). The "Optimized" top ends were introduced for all the pro model saws and I believe were manufactured by Stihl.

1999 is when they switched over to the larger crankcase. The service bulletin for that is attached.

 

[brandonstclair20]

Hey gents... question here about the 066 and 660 differences.
Have an 066 Red light that runs, clean cylinder but the case is broke by the front AV mount. Will a newer 660 case work to repair by swapping over??
The 660 has a bad piston, but it’s not bad and I thing the cylinder is probably good. It’s missing some carb housing parts but repairable.
My question will the 066 Red light top work on the 660. Possible build one saw out of one?? Seem I’ve read there are different chassis’s and such and not sure of interchangeability.


660 pistonView attachment 106444View attachment 106445 View attachment 106446View attachment 106447 View attachment 106449
Red light tank that’s broken

Not my saws and the owner would like them both fixed......cheap!![emoji53]
Just weighing options....

Thanks!!!!

I have a good flywheel side case from a short case, aluminum flywheel saw.

My saw had a bad clutch side case and I swapped out the whole case.

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[brandonstclair20]

I hate to de-rail your thread but I have a 1122 52mm bore KS cylinder with the thick base and a de-comp. I thought all 064s were thin base no decomp. And all 066s were 54mm.


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