[Gene Alvarez]

Please help the easily confused...

My '86 944 NA needs a new water pump. The car and Porsches in general are new to me as of last week.

I have read that one should upgrade to the turbo pump, and that the retrofit requires adding a belt guard, a blocking plate, and a larger diameter roller. Understood.

My car has a non-turbo pump (there is metal where the extra coolant hole would be) and a belt guard. Semi-understood.

The catalogs (including Pelican) say to upgrade to newer style, old style not available, yet they list rebuilt non-turbo older pumps. Let's say these are upgraded rebuilds; how upgraded are they? As good as a turbo pump? If so, why do they sell blocking plates for the turbo pump? Baffled.

The question really is: exactly which pump should I order?

Thanks,

Gene