stock alternator
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Cargo Master
Joined: Feb 2008
Posts: 2,862
Likes: 44
From: Tooele, UT
stock alternator
ok here is a dumb questions but i am pretty sure my alternator is getting ready to take a dump on me cause the battery light keeps coming on while i idle so i was pricing out alternators in preparation but am finding 110 amp and 140 alternators. i am not sure which one the dual setup takes and which one the single setup takes. mine is the single.
also if mine is only a 110 amp would it hurt if i put a 140 on it?
thanks for the help guys
also if mine is only a 110 amp would it hurt if i put a 140 on it?
thanks for the help guys
Fleet Mechanic
Joined: Jun 2006
Posts: 1,589
Likes: 20
ok here is a dumb questions but i am pretty sure my alternator is getting ready to take a dump on me cause the battery light keeps coming on while i idle so i was pricing out alternators in preparation but am finding 110 amp and 140 alternators. i am not sure which one the dual setup takes and which one the single setup takes. mine is the single.
also if mine is only a 110 amp would it hurt if i put a 140 on it?
thanks for the help guys
also if mine is only a 110 amp would it hurt if i put a 140 on it?
thanks for the help guys
You might want to add a second wire from the alternator output to the passenger side battery. I added a piece of 2/0 gauge wire on mone. The OEM wire is sized for the 110 amp alternator so if you exceed the 110 amp for a sustained period of time you may cause the wire coating to melt and a possible fire. Not likely, but possible.
DSMMH
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Cargo Master
Joined: Feb 2008
Posts: 2,862
Likes: 44
From: Tooele, UT
Quick question again mark and dsmmh. I just had to pull the trigger on an alternator today and I bought the 140. I also had to replace my cracked degas bottle. While I was waiting for the thermostat to open to see how much more coolant I might have needed to add I felt the charge wire at the alternator and it was pretty hot! Hot enough to soften then insulation. Is this normal? How much heat can this wire take? Does the wire get that hot withthe 110 amp alternator?
Fleet Owner
Joined: Nov 2003
Posts: 27,901
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That wire gets plenty hot. It has been so long since I ran the 110A OEM unit, I can't recall exactly how hot though. MY DCPower alternator gets my 2/0 wire quite hot.
Can you shoot the wire with an infrared heat gun to get an actual temperature value?
Can you shoot the wire with an infrared heat gun to get an actual temperature value?
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Cargo Master
Joined: Feb 2008
Posts: 2,862
Likes: 44
From: Tooele, UT
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Lead Driver
Joined: Oct 2010
Posts: 5,420
Likes: 16
From: Ouray, CO
You can do like DSMMH suggested and ADD another large wire between the alternator and PASS side battery to handle the added power.
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