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Old 03-25-2020, 07:39 PM   #5
40 Deluxe
Senior Member
 
Join Date: May 2010
Location: now Kuna, Idaho
Posts: 3,779
Default Re: Serpentine belts

You will notice that modern cars with serpentine belts run spring loaded idler pulleys to keep constant tension or preload on the belt to prevent slippage. How much belt tension can a Model A water pump take, and for how long?

As far as the claim of 10% more power, without a notarized dyno sheet, it did not happen!
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