I see all these alts out their that are like 180, 200, 220amps

But the idle is only 110-125

What the heck, so basiclly if i'm sittin thier at the light my car will still dim

most alts cut-on between 700-900 rpm, while having full output by 1200-1500 rpm.

Where is Your idle?

Even stock alt's don't cut-on until 600-800 rpm.

Most "HO" alts are designed for competition, most competitions let You idle upto (with foot on throttle for example) 2k rpm. So that is where full power is, but it's not not producing power before then.

:confused:

Sorry, I guess I don't see what the question was lol

u understand,

I was just saying if i got a HO alt, and was settin at a stop light, i would still have dimmage, or if i was just parked somewhere listening to the radio.

do you care about dimming at the stop light? most places where you will have a stop light you should have your low beams on anyway...low beams dont dim all that much, they only use 50-70w at most generally, unless they are HID or fake HID that burn blueish purple in which case they can use as much as 100w to make that higher frequincy (and there for energy) light. there may be slight timming when dropping to 13.5v but unless you are pushing a good number of Kw 100-115a and a deep cycle battery should maintain 13.5 pretty easily.

My bro's Iraggi does 180 @ idle and its 220A

This is where a secondary battery (or more) comes in handy.

My alternator does 180 at 900rpm and about 95 at idle, car idles at 500rpm when warmed up. Just a quick tap on the pedal and no worries with dimming.

500rpm, thats low

not really, when you first start the engine most newer ECU's have the engine idle between 1000 and 2000 RPM. after 10-20min of driving idle can drop as low as 200RPM in some cars...my truck will have the needle between the 500 notch and the 0 markcloser tothe 500 though...and i have a vacume leak in my EGR controller.

older ECU's and carburated engines have to always idle where they would have to idle to keep running on a cold start because they dont have varible idle control.

good info.

Well i have a regular everstart battery.

And a stock alt.

My headlights dim slightly after the big 3, but inside lights are rediculous if the door is open and the interior lights are on..

So one direct me in the cheap direction of alts, teh irragi's on ebay seem pretty cheap especially for that 180amp, its only like 150$

yea me too. whenever i email irragi, or ohio, they never respond.

i wish i could get a mean green 220 but i dont need that, my lights probably wont dim much with the amp i am running...