2-1/2” bore size no ID tag help please Tecumseh rebuild help

[Catmx007]

So I picked this up it was on a bird mini bike. Adds say it came with a 3.5hp but there was a model with the 3hp. Head gasket is extremely smaller then the hs40 head gasket I compared it to. But it’s a slightly newer engine off an old Aries snow blower. Shaft is smaller diameter on the lil older Tecumseh to. Dunno if that matters. Nor size is 2-1/2” if anyone knows what piston rings parts number would be. And can I upgrade the valve springs and cam. Maybe off a different hp Tecumseh. Also the gov arm going in to the block seems sloppy is there a seal that firs bad?

 

[ole4]

Uour ruler shows 2.5" bore or am I missing something?

 

[Skipp]

Tecumseh 32538 stock piston
H35

 

[Catmx007]

Uour ruler shows 2.5" bore or am I missing something?

correct sorry I was Measuring something else to when I took that picture and I must’ve got them backwards. Sorry about that probably should’ve double checked be for posting lol. I

 

[Catmx007]

Thanks skip! You wouldn’t by chance know what the rings parts number is would you? Or how can I look the engine it self up to get a list of part’s numbers.

 

[Skipp]

https://www.partstree.com/models/h35-45348h-tecumseh-engine/engine-parts-list-1-0/

H35 on parts tree

 

[Catmx007]

https://www.partstree.com/models/h35-45348h-tecumseh-engine/engine-parts-list-1-0/

H35 on parts tree

Are all year h35s the same though is what I mean. I read something about some have thick rings bs skinny. So trying to figure out what the engine code would be.

 

[Skipp]

Are all year h35s the same though is what I mean. I read something about some have thick rings bs skinny. So trying to figure out what the engine code would be.

I wish you all the best….

 

[sparkwizard]

Are all year h35s the same though is what I mean. I read something about some have thick rings bs skinny. So trying to figure out what the engine code would be.

Remove your piston. Measure your rings. Nobody can tell you what you have without the numbers off the original shroud.

 

[Catmx007]

Remove your piston. Measure your rings. Nobody can tell you what you have without the numbers off the original shroud.

Yeah my shroud didn’t come with one it was removed for some reason. But alright think I can figuere this out.