140 amp high output alternator

[Gomez]

You mean the Sybian from the Stern Show? LMAO Matt !!!

[MiltonHavoc]

Omg. Really. Bwahaha there's soda on my screen

[rmoltis]

I too would like to get a higher output alternator.
the two amps i have. have 200 amp worth of fuses.
but so far i seem to be squeaking by just fine with the stock alternator.

i Have a yellowtop optima battery i want to replace someday with a large kinetic battery.
and i have 0G wire running to the distribution block split into 2 guage wires.
then for giggles a friend gave me a 1.5 farad capacitor which isnt much,
but it was enough to keep my headlights from dimming anymore on those heavy tones.

i can turn my stereo up to full volume and play it for quite some time.
in fact more time than you would even want to spend in such loud music.

and as long as there are rest periods inbetween and you have a nice battery to fill up.
its not as bad as youd expect. unless your festy is one of the ones with a 45 amp alt lol.
now if for example i were to drive to work 100 miles in each direction everyday and that whole time i had my stereo up full blast.
eventually the battery would not be able to keep up with itself. and the electrical system might start doing wierd things.

but with most low and mid volumes with small bursts of max volume from time to time.
you should be fine.

but if by chance you do find one... lemme know :-) i was poking around earlier looking for one.
It would take my battery a good .5-1hr of full volume to drain my battery to the point the volume decreases and i notice.
that is, if im not half deaf by then.

ive pretty much come to terms with the fact that a 60 amp alt works great, but if i could find a 70-100amp alt that requires minimal mods or bolts up.
i probably would get it when the time comes that my current alternator burns out.

i have been looking into the denso high output mini alternators, they are pretty sweet.
but would require custom bracketry and pulley made to adjust the output of the alt to my vehicle.
options are there, we just need to find one.

[Rocketman]

I have an alternator here, a ford 3G that's been worked to provide 200 amps. It's fitted with a 4 rib pulley. It's for a Capri friend of mine, one of these days ill get around to finishing all the brackets for it. Maybe make a few sets.

[rmoltis]

sounds interesting,
im just wondering what kind of parasitic loss would a 200 amp alt incur compared to a 60amp
the way it is now, i can actually tell when the alternator comes on.
it changes how the car feels during cruise situations.
makes me have to press the gas a lil bit more.
maybe thats just another sign its on its way out.

[Rocketman]

See my earlier post. The drag/intertial losses from spinning the alternator are going to be somewhat minimal.
The load on the engine is proportional to the electrical load placed on the alternator, the load on the engine is not constant.

These are Alternators, they are on-demand devices.

[zoom zoom]

I only got 32 mpg on that last tank, I'm gonna run my system at 1/2 volume instead of full for a tank to see if I can get 34 mpg!


NOT!

[rmoltis]

See my earlier post. The drag/intertial losses from spinning the alternator are going to be somewhat minimal.
The load on the engine is proportional to the electrical load placed on the alternator, the load on the engine is not constant.

These are Alternators, they are on-demand devices.

yes, i understand.
they vary the electrical current running through to increase or decrease the magnetic field depending on how much electricity it needs to generate.
by sensing the load of the battery and how full or empty it is.
the more electricity running through it creates a stronger magnetic field thus generating more electricity.



if anyone is interested. here is a whitepaper discussing alternator efficiency vs. fuel consumption.
i understand we are not discussing efficiency of the alternator,
but it breaks down into nice details things to take into consideration when thinking about fuel consumption the alternator requires even if it is minimal.

http://www.delcoremy.com/documents/high-efficiency-white-paper.aspx