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Old 02-05-2017, 07:30 PM   #14 (permalink)
oil pan 4
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I finely got to building my test stand and putting an alternator on it.
The alternator is a modern 150 amp output ACdelco DR44G, also the AD244 is almost the same. So it's not a small alternator.
Turning the alternator at an unrealistically slow speed of about 3,600rpm only took between 100 and 120 watts for the alternator plus belt..
A little less than what I expected.
Next I had a 4 inch pulley to put on the motor. The larger pulley should spin it up to 5,760rpm.
A bit more plausible for a usable speed but no where near cruise RPM. It only used between 120 and 140 watts to turn the alternator plus belt.
A minimum cruise speed is going to be at least 7,500rpm.
Edit: no field current. Just free spinning.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
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Last edited by oil pan 4; 02-05-2017 at 08:18 PM..
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