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This morning I got the alternator installed, minus the wiring. Now I can at least move the car around my garage if I need to. The clutched pulley is 56mm and the stock pulley is 50 mm. Despite requiring about 10mm of extra belt as compared to stock, it worked with a stock belt no problem and the tension seems perfect, with about 1/2 inch of deflection when gently pushing on the top span of the belt.
It's smooth as silk and much quieter. I'm a happy customer. I don't really want to run new wiring, so I'll probably just hack the stock harness. I'll never put the old-school style alternator back in there now that I have a modern one.
I highly recommend the clutched pulley upgrade, even with the stock 70A or near-stock 90A unit. There is a reason that all modern cars use clutched pulleys. I have heard a 1-2% bump in fuel efficiently is to be expected with that upgrade.
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Garage:
2017 Chevy Colorado Diesel (nanny state emissions)
2005 Volvo S40 T5 AWD, 77k
1987 Mercedes-Benz 300D turbodiesel, 4 sp auto, 156k - 28.7 mpg
1996 Tracker 4x4, 2 door, 16v, 3 sp auto. 113k - 28.6 mpg
WARNING: this post may contain dangerous free thinking.
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