What is the best way to install a billet pulley on the alternator without damaging the pulley? The original came off ok. I've been told to heat up the pulley but I'm afraid it will discolor it. Been told use a c clamp, and pressing it. Advice please.
Billet pulley
- Thread starter mizzou580
- Start date
While your at it put the alternator in the fridge.
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How warm? 500?
500°F will work, but I don't know what it will do to whatever it's coated with. Assuming it's aluminum, the hole would be ~.007" oversize. 400°F will give you ~.005" and 300°F will give you .004".
BTW, cooling the steel shaft to 30°F will only give you ~.0004" shrinkage and figure on doing that overnight.
I'd probably try 300-350°F. Just remember that the pulley will start cooling very fast in the air and even faster when it fits the shaft. You have to have everything ready and do it right the first time.
If your pulley is powder coated, this isn't gonna work. You'll have to press it on like the stock pulley usually is.
BTW, cooling the steel shaft to 30°F will only give you ~.0004" shrinkage and figure on doing that overnight.
I'd probably try 300-350°F. Just remember that the pulley will start cooling very fast in the air and even faster when it fits the shaft. You have to have everything ready and do it right the first time.
If your pulley is powder coated, this isn't gonna work. You'll have to press it on like the stock pulley usually is.
twostick
Senior Member
Disassemble the alternator and press it on.
Kevin
Kevin
bluefury361
Old Man with a Hat
Put the original back on......... 
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