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#1
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Upgrading alternators
Will I be able to replace a 1986 300E's 70 amp alternator with a 1992 400E's 110amp alternator without any major modifications?
I amthinking about replacing my viscous fan clutch with a Flex-a-lite electric fan and want the additional alternator capacity to run the electric fan. Thanks.
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1986 300E (3/2002) Rear ended and totaled (10/2009) 2000 Xterra (5/2000) 1992 400E (11/2009) -Sold 1986 300E (12/2009) - Sold 2004 E500 Wagon (6/2013) - Sold ![]() |
#2
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Changing from the 70A(Al65X to the 80A(AL66X) is the most common & easiest change.
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator |
#3
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My alternator gave up and I need one to fix my car over the weekend. My local parts store has one in stock.
But I want to upgrade to an 80 amp alternator. So, are there any distinguishing features between a 70 and 80 amp alternator. That way I can verify that I am buying the higher capacity one. Thanks HS
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1986 300E (3/2002) Rear ended and totaled (10/2009) 2000 Xterra (5/2000) 1992 400E (11/2009) -Sold 1986 300E (12/2009) - Sold 2004 E500 Wagon (6/2013) - Sold ![]() |
#4
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Thanks to the posts in the following two threads, I was able to upgrade my alternator to a 143 amp unit from a 1997 S420. If one of you is ever going to swap out your 70Amp alternator, I would strongly suggest reading through these threads as there is a great deal of very good info:
http://www.peachparts.com/shopforum/showthread.php?t=123957&highlight=80a http://www.peachparts.com/shopforum/showthread.php?postid=444946 I bought my used 143 Amp unit from Ptomac - http://mbpartsonline.com/
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1986 300E (3/2002) Rear ended and totaled (10/2009) 2000 Xterra (5/2000) 1992 400E (11/2009) -Sold 1986 300E (12/2009) - Sold 2004 E500 Wagon (6/2013) - Sold ![]() |
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