alternators, one more time
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alternators, one more time
A couple of questions (again, 63 292 y-block):
I've been looking at the 63-amp internally regulated 63-amp GM alternators (i.e. 7127), or about $40 at autozone.
a) what happens with a 60 amp ammeter (dash gauge) when it's connected to a 63-amp alternator?
b) Will I ever see 63 amps with a 4000rpm redline? I know it probably depends upon the pulleys - I'm using a stock fan pulley and want to use an electric fan.
c) if I upgrade the headlights to 100/55 units, is the following correct?
fan: budgeting 15 amps
headlights: 100 * 2 = 200 watts / 12 volts = 16.66 amps
other lights: 50 watts / 12 volts = 4.25 amps
heater motor: 5 amps
"moderate" radio: 100 watts or about 8 amps
or roughly 50 amps worst case (fan on, brights on, heater motor on, radio blaring).
Bob
I've been looking at the 63-amp internally regulated 63-amp GM alternators (i.e. 7127), or about $40 at autozone.
a) what happens with a 60 amp ammeter (dash gauge) when it's connected to a 63-amp alternator?
b) Will I ever see 63 amps with a 4000rpm redline? I know it probably depends upon the pulleys - I'm using a stock fan pulley and want to use an electric fan.
c) if I upgrade the headlights to 100/55 units, is the following correct?
fan: budgeting 15 amps
headlights: 100 * 2 = 200 watts / 12 volts = 16.66 amps
other lights: 50 watts / 12 volts = 4.25 amps
heater motor: 5 amps
"moderate" radio: 100 watts or about 8 amps
or roughly 50 amps worst case (fan on, brights on, heater motor on, radio blaring).
Bob
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From: Sun River St. George
I like the 85 amp one wire deal for about 90 bucks. The indicator light will work fine with an alternator. Check out the article on this subject in the tech section. I wrote it. Over 30K miles with no problems.
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I'd read that! It's one of the articles that made me ditch my fan blade and start planning for an electric fan.
Just had this nice ammeter I wanted to reuse and it only goes to +- 60 amps. Haven't a clue what happens to it if I plug in a 63 amp alternator (or 85 or 100). To put my concerns into words, I guess, will it just peg out or will it MELT IN A FIERY INFERNO ?
From my calcs, I think 63 is fine for my needs, 85 and 100 have no real added value. OTOH, I can't say I'll never want a bright row of hella lights or a big electric winch on the front someday.
Man, I gotta be careful - almost typed wench.
Bob
Just had this nice ammeter I wanted to reuse and it only goes to +- 60 amps. Haven't a clue what happens to it if I plug in a 63 amp alternator (or 85 or 100). To put my concerns into words, I guess, will it just peg out or will it MELT IN A FIERY INFERNO ?
From my calcs, I think 63 is fine for my needs, 85 and 100 have no real added value. OTOH, I can't say I'll never want a bright row of hella lights or a big electric winch on the front someday.
Man, I gotta be careful - almost typed wench.
Bob
