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but were afraid to ask: 
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Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
Joe_Pinehill
Jedi Hopeful
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I wanted to change the belt on my Spit. Just went to the Napa store bought the look up replacement.
But, I have a 78 and I dont have a viscous clutch for the fan. Im guessing at some point the PO replaced a failed clutch/waterpump with the '74 era pump and bolt on fan. The car runs fine, no temp problems at all.
But I had a time matching the belt. The current belt is a 10mm x 1125 mm Contitech part number VAX10X1125. The closest match I could get was a 11mm x 1120. It went on OK. Seems to run fine.
Question are the earlier water pumps interchangeable? And is this a common switch?
But, I have a 78 and I dont have a viscous clutch for the fan. Im guessing at some point the PO replaced a failed clutch/waterpump with the '74 era pump and bolt on fan. The car runs fine, no temp problems at all.
But I had a time matching the belt. The current belt is a 10mm x 1125 mm Contitech part number VAX10X1125. The closest match I could get was a 11mm x 1120. It went on OK. Seems to run fine.
Question are the earlier water pumps interchangeable? And is this a common switch?