tuning the 1300 GF

I want to increase the capacity of my engine, does anybody know what pistons i can use? also is there a crank from another vw engine that will fit to increase the stroke? would be happy if the capacity crept over 1400cc!

Think the later Hydraulic version of the 1275cc engine is the better for modifying than the early GF. Presumably you want more power, in which case you can get more bhp from the polo engine with better cam, carbs etc rather than having to increase the capacity. VW made a 1.4 version of the engine in the early 90's, but it only puts out 60bhp.

Cheers