newby
Posted: Tue May 19, 2020 7:30 pmCould someone explain the difference between small block and big block lambretta engine.
does it apply to series 1 2 and 3
does it apply to series 1 2 and 3
No. Big block engines only apply to series 3 and GP 200cc models.
125, 150 & 175 engines use the the small block casing and 200's use the big block.
Typically, the cylinder spiggot diameter of a small block barrel is 70mm and 75mm for the big block.
In essence.... the 125,150 &175 cylinders won't fit the big block casing and the 200 cylinders won't fit the small block casing.