#61432
alpine-64
Participant

    You can hybridise the 1600 and 1725 motors, but there are differences and there are things that are not a direct change.

    The heads will swap no issues and you can use the manifolds and carbs, but oil pumps will not be the same, and will not fit each others sumps without modification. Cams are different, and the tachs depending if they are cable or electric will determine which distributor you use (also cam)

    Waterpumps can be interchanged, the flywheel and clutch will dpend on spline count. 1725s used smaller flywheels and clutches with higher spline count.