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Belt (alternator, A/C, water pump, pwr steering) questions 700 1991

posted by  N7SC on  Fri Jun 25 12:43 CST 2004
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last visit: Sun Jul 7 14:12 CST 2013
[RELATED]

Car = 1991 745 Turbo, stock B230FT

Most important is: Why does the water pump have a double sheave pulley (nicely lined up with two sheaves on the harmonic balancer) on it and yet only has one belt driving it? Or is it supposed to have two belts?

The rotary engine in the RX-7 has a double sheave water pump pulley and uses two belts to drive the water pump. It is cheap insurance against a single broken belt destroying an engine.

Has anyone put two belts on the water pump?

Second question: The water pump/power steering belt is the shorter (1000mm) of the two narrow belts (11.9mm width), right? The alternator belt is 1013 mm, right?

Finally: The A/C belt is the wide one, 12.5mm, right? The one that is on there now is a Continental and is 13mm wide.

Thanks
--
Scott Cook - 1991 745T, 1985 RX-7 GSL-SE, 1986 Toyota Tercel (Don't laugh, it is reliable, faithful AND gets 41 mpg!)






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