Stihl 1125 (034/034S/036/360) Cylinder/Saw ID

[MustangMike]

Looks like the center of the jug. Was in the lathe during manufacturing???

 

[RI Chevy]

For POWA!!!!

 

[10/80]

Are the 034 Super and 036 cylinders internally the same?....EG port layout, combustion chamber shape, etc?

 

[Cracker Boy]

Are the 034 Super and 036 cylinders internally the same?....EG port layout, combustion chamber shape, etc?

They are both 48 mm but with a super cylinder and a 036 muffler it requires a spacer between muffler and cylinder. That is unless you have the 034 muffler or 034s muffler Wich is one with the holes in cover like an 026 muffler Everyone wants the 034s cylinder as they say the timing numbers are better.

 

[10/80]

Everyone wants the 034s cylinder as they say the timing numbers are better.

So internally the 034 Super & the 036 are different ?

 

[RI Chevy]

Yes they are different. Al can explain better.
@drf256

 

[Wonkydonkey]

 

[Cracker Boy]

So internally the 034 Super & the 036 are different ?

No not really same bore same crank same crankcase. The 034s .Were non compinsator carbs they had tillotsen carbs instead of same in most cases 034s were non decomp cylinders unlike the 036 pro with decomp

 

[5000+]

034s and 036 have different intake and exhaust ports.

 

[Cracker Boy]

034s and 036 have different intake and exhaust ports.

There are some differences thats why 034s is so desired. For example a 044 10 mm slant fin from a ks to a major are diff. I have 2 066 non decomp major cylinders one the intake was 1 mm lower. You just never know till you put a timing wheel on them

 

[RI Chevy]

Whats this major cylinder you are referring to Brian???

 

[Deets066]

34 supers just run better, port shape was much better. Exhaust roof is flat, I mean flat

 

[RI Chevy]

I wonder why Stihl ever changed the design then???

 

[Adirondackstihl]

Whats this major cylinder you are referring to Brian???

I believe that was autocorrect for “mahle”

 

[RI Chevy]

Ahhh. OK. That makes more sense. TY

 

[Deets066]

I wonder why Stihl ever changed the design then???

Why did they go from the 064 to the MS 660?

 

[RI Chevy]

Good point there too.

 

[BuckthornBonnie]

Agreed. The 064-660 transition I almost “get” due to the poly flywheel, oil pump differences, bigger crank and p/c, but still... those early 1122s are a blast to run.

The 1125s have the same crank, bearings, cases, oil pumps, etc. The p/c, air filter setups, and a few items are different from 034-MS360. I’m assuming EPA and engineering differences expedite change... doesn’t mean I have to like it.

 

[Cracker Boy]

I wonder why Stihl ever changed the design then???

EPA

 

[Cracker Boy]

Why did they go from the 064 to the MS 660?

Or 066 to 660 for that matter