Ks 42mm cylinder identification

[Nc grease monkey]

Anyone have any info on this cylinder? 42mm bore
Was in a box of 026 parts that my brother gave me

 

[cus_deluxe]

Well it says 1121 so its probly an 024 cylinder?

 

[cus_deluxe]

@drf256

 

[Nc grease monkey]

By brother scuffed the port up a little but you can see he stopped well short of messing with port timing, there's not a bevel I can see to help the rings

 

[cus_deluxe]

Pretty typical of ks cylinders ive seen it seems like. Damn near perfect casting and just the slightest rounding of the port edge, not a real bevel like seen on other brand cylinders. I think 026 is 44mm? So it seems like this must be a 024 jug

 

[Chainsaw Jim]

It's from an 024. It's there an S on top?

 

[Nc grease monkey]

It's from an 024. It's there an S on top?

Yes sir there is

 

[Nc grease monkey]

Hiw can I determine if it's for an 024 or an 024 super? If I've researched correctly they have 2mm difference in stroke.

 

[Chainsaw Jim]

My super has an S on top. I've never payed attention to whether it is on the regular model.

 

[Nc grease monkey]

I'm gonna go with being a super, from base to squish band it's the same height as a 44mm 026, 62mm

 

[Chainsaw Jim]

Here's pics of what I believe to be the regular 024.

 

[Chainsaw Jim]

The combustion chamber looks a little bit different, unless it's just the camera angle. I think it's the camera angle and carbon throwing me off.

 

[Cracker Boy]

If im correct on this its been a while.
On an 024s they were 026 cranks with 42 mm cylinders. You can put a 026 44mm and 44.7 jug and slug. But i do know for a fact you can not put a 026 jug and slug on a 024 due to shorter stroke There was also an open port 42 mm cylinder as well

 

[Nc grease monkey]

I'm guessing the prominent "S" is for super. And it looks to me like the combustion chamber you have could be a little bit smaller.
Do 024 supers and 026 share the same crankcase?

 

[Chainsaw Jim]

Yes. An 024 super with an 026 jug n slug is basically just an 026.

 

[drf256]

Yup. Like Jimbo said, 42mm 024 Super Jug.

Cranks cases nearly the same. The 024 usually front chain tensioner and one bar stud with a stud eliminator in the other hole. Not so for the o26 case.

You can cut the two top rear fins off, and bolt a 44mm 026 P&C on it.