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PointedThree :  Sedan Forums : W116 S, SE, SEL, SD Class : alternator upgrade?

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alternator upgrade?
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Posted 2/17/2007 4:10 PM
Chuck_D

Date registered: Dec 1899
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alternator upgrade?

My little sister has 78 450 SEL that needs a new alternator but since we are putting a system in the car I was hoping to upgrade to something better than the stock 55 amp alt that came stock does anyone know of an upgrade kits or alternators off of a new MB that would work?
#64190
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Posted 2/17/2007 8:42 PM
cmitch
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Date registered: Apr 2006
Location: Ala-Tenn
Vehicle(s): 2002 ML320, 2005 S430 4Matic, 2010 F150 Super Crew
Posts: 3412
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RE: alternator upgrade?

For starters, does the system run off the battery and the alternator charge the battery or does the system run off the alternator once the battery is charged? I believe it should run off the battery at all times but I don't know how the particular one you're talking about does. So long as the battery runs the system and you're fused for it, it should be okay to upgrade to a 75 or even a 100 amp. I would consult an electronic auto guru before trying anything. I certainly wouldn't do it myself on this one.
#64217 - in reply to #64190
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Posted 2/18/2007 12:28 AM
flyboyike

Date registered: Dec 1899
Location:
Vehicle(s):
RE: alternator upgrade?

Chuck_D - 2/17/2007 3:10 PM My little sister has 78 450 SEL that needs a new alternator but since we are putting a system in the car I was hoping to upgrade to something better than the stock 55 amp alt that came stock does anyone know of an upgrade kits or alternators off of a new MB that would work?

The answer to your question is yes, there is an upgrade available.  All the way to a whopping 65 amps.  The fact of the matter is that with the car being mechanically injected, you really don't need much more.  Some shops will custom build you a 100 or more amp unit, but you'll just be wasting it. 

 

#64228 - in reply to #64190
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Posted 4/20/2007 8:30 AM
Boneheaddoctor
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Date registered: Jun 2006
Location: Hells half acre (Northern VA)
Vehicle(s): '79 300SD, '83 300D, '75 Harley-Davidson Chopper
Posts: 310
300
Re: alternator upgrade?

THere is a 115 amp unit that can be modified to work...


http://schumanautomotive.com/forums/showthread.php?t=2023

from a Saab. But you need ot do some wiring work.
#70771 - in reply to #64190
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Posted 3/4/2008 8:46 PM
Ordncebob
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Date registered: Jan 2008
Location: Washington State, USA
Vehicle(s): 1980 450SEL
Posts: 13

Re: alternator upgrade?

I found a Bosch 55, 65 & 75 amp alternator at Partstrain.com, Carpartswholesale.com and Partsguru.com.....I'd check the various web site for 116 parts and see who has what you want. Autohaus.com also has some decent stuff.

Good luck.
#112738 - in reply to #64190
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