Tuning 1242 SPI block, 1108 MPI head

[SportingMan35]

Hi all,

In the process of mating a 1242 SPI Punto block to an 1108 MPI Seicento head, to go in my MPI '02 Sei. All going well, engine in, but neither the Seicento nor Punto cambelt is long enough or has the right number of teeth - which cambelt do I need to get?

Cheers all [emoji16]

 

[Paul106xsi]

Are you using matching pulleys (i.e. spi Crank and cam pulley)?