1969-70 cooling system question - Saab Saab Model 99 Bulletin Board - Saabnet.com
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On these early cars with the expansion tank on the radiator, there is a second device in the thermostat housing described as a 'valve body' in the manual. It is a light colored cylindrical float with a pointed top. Apparently it serves as a large air purge, then seals against a seat in the cover when coolant floats it. Mine is missing.
Has anyone seen one? What was it made of? I'm thinking I could create one from low density plastic rod or the like but any clues are welcome.
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