alternator

[Tom Broome]

Originally Posted by Bob Mulry

I had to go check my rulebook to make sure that I haven't been reading it wrong for the last 40 years....

Section 11A Page 4 2018 NHRA rulebook

FAN, GENERATOR, WATER PUMP
Alternator or generator must be engine-driven and functioning.
Belt must be tight enough to drive equipment in a satisfactory
manner without excessive or noticeable slippage. May be
relocated. Aftermarket pulleys permitted. Electrically driven fans
and water pumps permitted. Water pump must bolt on, with no
modifications to block. Use of “smog pump” or air pump for
crankcase evacuation
prohibited.

Yep that alternator functions. Want to check it at WOT? Sure.....stand really close right there!

[Ed Wright]

Originally Posted by Tom Broome

Yep that alternator functions. Want to check it at WOT? Sure.....stand really close right there!

There ya go!!

[Coleydog]

If your engines only makes 140 HP you could lose 2-3 hundredths, if you're making 500 HP, not so much.
Had a El Camino 350 2 bbd, turn the AC on it would drop from 60 to 55 mph, with the 454 it never made a difference.
Another example, a grownup can pick up a 50 lb bad of feed, a 4 year can't. = HP

[Ed Wright]

Originally Posted by Coleydog

If your engines only makes 140 HP you could lose 2-3 hundredths, if you're making 500 HP, not so much.
Had a El Camino 350 2 bbd, turn the AC on it would drop from 60 to 55 mph, with the 454 it never made a difference.
Another example, a grownup can pick up a 50 lb bad of feed, a 4 year can't. = HP

And, cut it off in an EFI car, injectors open slower, leans the car. I played with that on the car I race now. Even after I tuned the WOT air/fuel ratio, I found nothing. Put two 16 volt batteries in it, picked it up a couples hundredths, no alternator & belt in the way. Starts quicker. Has to be hotter spark & starter speed.

[Bob Mulry]

Hi all,

Do you guys want to know a way that's so easy that a caveman could check an alternator for output??????

[Hacksaw]

Originally Posted by Bob Mulry

Hi all,

Do you guys want to know a way that's so easy that a caveman could check an alternator for output??????

Like maybe touching the case with steel bar screwdriver?

[Bob Mulry]

Originally Posted by Hacksaw

Like maybe touching the case with steel bar screwdriver?

I guess that you're an old guy using old guy tricks???

[Hacksaw]

Thanks. I didn't know I was old until you told me. LOL. My pops and brother were into the auto elec rebuilding business and I guess my brain retained some of their knowledge.