80cc vs 50cc

[Brian Brower]

They look exactly alike in the pictures so where's the difference in the two engines. The 50cc is a little cheaper. Is the piston a bit smaller?

 

[crassius]

quite a bit smaller - 50cc can't go uphill as well as 80cc

 

[Brian Brower]

Exactly what is smaller? They measure the same

 

[crassius]

one piston is 40mm other is 47mm - head studs are farther apart to fit around the large one

 

[Brian Brower]

Okay thanks