xr compression ratio q's
Does anyone know what the differences are in the engines of the xrr, xrl, xr baja that account for different compression ratios? Is it just a different head gasket thickness?
I am debating outfitting an xr250r for travel, but I am concerned with the 10.2:1 compression ratio with an air cooled engine in some parts of the world.
The baja has a more conservative 9.3:1 ratio and I know that it has been used to navigate Africa and South America. Any insight would be appreciated.