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Water pump question 120-130 1967

posted by  Chris Mullet on  Tue Jun 16 04:56 CST 2009
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last visit: Fri Oct 24 09:08 CST 2014
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If it has a fan clutch, they can get noisy. At idle, the fan speed closely matches the pulley speed, so little or no noise.

At higher RPM's, the pulley speed increases more than the fan speed, so they can start to rattle.

Another possibility is the timing gear - the nylon outer part starts getting loose on the center hub. A very common occurance on the old push rod engines.






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New Water pump question [120-130][1967]
posted by  KlausC subscriber  on Mon Jun 15 15:30 CST 2009 >


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