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Re: New Alternator Wiring Upgrade Configuration
Quote:
Originally Posted by SSSVX
Your alternator is rated at 160A.
But at idle, how many amps would it produce? Do you also have
the info of how many amps does a stock SVX need of its entire electrical system?
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The stock alternator produces up to 95 amps at 3300 rpm
Output at idle: up to 34 amps at 750 rpm (which is 35% of maximum output)
High-Amp rebuild produces up to 160 amps at 1600 rpm
Output at idle: up to 88 amps at 750 rpm (which is 55% of maximum)
Up to means that it is capable of putting this current out, but doesn't unless the demand is there. The current draw swill be the same no matter what aalternator you are using, although the high-amp unit is more efficient.
I don't know what current draw on the stock electrical system is as it depends on what accessories you are using. Maybe someone here has these figures.
On a nice summer day with the sunroof open, all you may be using is your radio and whatever your engine requires. However, n a cold winter night, you use a LOT more: headlights, climate control defrost, rear defroster, heated mirrors, etc.
Idling at times like this, the car's electrical loads may exceed the low-speed current (amperage) output of the alternator and when this happens the shortfall comes from the battery. This will result in a drop in the electrical system voltage as the battery delivers the additional electrical current to meet the demand. This is equivalent to the brown-outs experienced by homes and businesses when the electrical demand is more than the supply. This is where the benefits of high-output alternators come in.
I just like that the alternator doesn't have to work so hard to provide the necessary power
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Subaru Ambassador
1996 Polo Green LSi #216 ..138,100 miles. ..SOLD
JFICX8659TH100216.....Date of Manufacture: November 16, 1995.....
Fuji Heavy Industries..Ōta North Plant....Ōta City,. Gunma Prefecture, Japan
In-Service Date: January 2, 1997
"The Pristine Green Polo Machine”
First Polo Green on the Network
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HID lighting (5000K) for headlight and H3 fog lights, PIAA SuperExtreme 120W high beams, rebuilt EG33 longblock, Cometic head gaskets, Phase II flexplate, AMR aluminum radiator with custom silicone hoses, 160A high-output alternator in aluminum-ceramic coated case, new design alternator wiring upgrade v.4, rare factory headlight protectors, refinished JDM BBS mesh aluminum wheels and custom, polished billet aluminum new hex center caps, LED grille mod, R1 Concepts high-carbon cryo slotted rotors, Akebono ceramic pads, Goodridge S/S braided brake lines, Smallcar Stage 1 shift kit, ThermalTech aluminum/ceramic-coated valve covers, Energy Suspension urethane front & rear swaybar bushings, Bontrager22 rear swaybar with QS Components Chromoly Teflon/Kevlar endlinks, "$15.00/5 minute" suspension mod. Hella Supertone horns, Custom stainless steel exhaust system with 2" headpipes, Magnaflow cats, AeroTurbine AR25 resonator /AWD "Bullet" muffler.
R.I.P. 2010 Subaru Outback Limited 2.5 CVT...338,000 miles. Totaled by a 1,300 lb. COW March 4, 2016 
2014 Hyundai Avante Limited ...178,000 miles. Actually quieter and smoother than the Outback 
2007 Mazda Miata MX-5 PRHT...102,000 miles.
Plenty of parts, service and windshields. 
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