Hello ejzy (no name and location in your profile ?),
why do you not take an electric waterpump to your engine ? In your case, if you take an electric fan for the radiator cooling an not the bd-waterpump-fan ,so you can take an very good electric-waterpump (EWP) from ISA-Racing (see page 221 in the 2006-catalog, or on
www.isa-racing.de [nofollow]) You can get an adapter to fit this EWP to your block by Andre van Koeveringen, Bergen op Zoom/NL (
aneko.home@hetnet.nl). He produces perfect adapters to fit the EWP to the Fiat 850-1000 block. Many of our members in the COPPA-MILLE need this EWP and the adapter from Andre.
With best regards
Klaus Kleber