MR2 Alternator Upgrade?
- BaileySims
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Re: MR2 Alternator Upgrade?
For those of you who upgraded the alternator, how exactly are you modding the upper bracket to get the belt to tension up on it?
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- Abletobecain
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Re: MR2 Alternator Upgrade?
Bump. Fresh pics of that GM set up would be great! Damn Photobucket concealed all the images.
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1983 DLX Tercel Wagon 4WD ("Charlie"/Daily Driver)
1987 SR5 Tercel Wagon 4WD ("Sprocket"/Off-road-Camping)
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1983 SR5 Tercel Wagon 4WD ("Cadaver"/Parts Car)
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2007 Tundra Limited Crewmax 4x4 ("Tetsuo Shima"/Hauler) SOLD

1983 DLX Tercel Wagon 4WD ("Charlie"/Daily Driver)
1987 SR5 Tercel Wagon 4WD ("Sprocket"/Off-road-Camping)
1985 SR5 Tercel Wagon 4WD ("Lucky"/Project)
1983 SR5 Tercel Wagon 4WD ("Cadaver"/Parts Car)
1987 DLX Tercel Wagon 4WD ("Lil Red") SOLD

- Abletobecain
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Re: MR2 Alternator Upgrade?
I'm also curious if there's anything else you need to do when upgrading the alternator...like to the wiring or whatever?
1977 BMW R100S 1WD ("Brunhilda"/Summer Fun)
2007 Tundra Limited Crewmax 4x4 ("Tetsuo Shima"/Hauler) SOLD
1983 DLX Tercel Wagon 4WD ("Charlie"/Daily Driver)
1987 SR5 Tercel Wagon 4WD ("Sprocket"/Off-road-Camping)
1985 SR5 Tercel Wagon 4WD ("Lucky"/Project)
1983 SR5 Tercel Wagon 4WD ("Cadaver"/Parts Car)
1987 DLX Tercel Wagon 4WD ("Lil Red") SOLD
2007 Tundra Limited Crewmax 4x4 ("Tetsuo Shima"/Hauler) SOLD

1983 DLX Tercel Wagon 4WD ("Charlie"/Daily Driver)
1987 SR5 Tercel Wagon 4WD ("Sprocket"/Off-road-Camping)
1985 SR5 Tercel Wagon 4WD ("Lucky"/Project)
1983 SR5 Tercel Wagon 4WD ("Cadaver"/Parts Car)
1987 DLX Tercel Wagon 4WD ("Lil Red") SOLD

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Re: MR2 Alternator Upgrade?
It wouldn't hurt to run new cables, considering they're underbuilt and 30+ years old...Abletobecain wrote: ↑Mon Jan 06, 2020 3:31 pm I'm also curious if there's anything else you need to do when upgrading the alternator...like to the wiring or whatever?
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- MrWrench
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Re: MR2 Alternator Upgrade?
Reviving this thread. I am heading out on a 3,000 mile road trip soon and would like to upgrade my alternator beforehand. I have a reman 60 amp that runs at 14.4 volts almost always. But when I have the radiator fan on, the blower motor, radio, recently installed electronic fuel pump and the headlights on, the voltage drops below 12.4ish and the fuel pump will kick and die.
I'll likely have up to 3 phones charging and possibly a flashlight via the cigarette outlet too during the trip so having a 100 amp MR2 alternator would be amazing!
Has anybody made an MR2 alternator fit?
I'm wondering if I replaced the wiring with a thicker gauge wire if it would help?
Thanks in advance!
I'll likely have up to 3 phones charging and possibly a flashlight via the cigarette outlet too during the trip so having a 100 amp MR2 alternator would be amazing!
Has anybody made an MR2 alternator fit?
I'm wondering if I replaced the wiring with a thicker gauge wire if it would help?
Thanks in advance!
1984 Toyota Tercel SR5 winter driver rescue
1985 Toyota Tercel SR5. Daily driver. Aka "Spud"
1986 Toyota Tercel SR5. - Recent wagon rescue/project.
* ISO - any 4wd manual transmissions *
1985 Toyota Tercel SR5. Daily driver. Aka "Spud"
1986 Toyota Tercel SR5. - Recent wagon rescue/project.
* ISO - any 4wd manual transmissions *
Re: MR2 Alternator Upgrade?
Good afternoon Luke,
I have replacement EU headlamps to install and some have struggled getting them wired w/o difficulties. I know with the undersized stock wires, voltage drop can become an issue. The common workaround is to use the existing "headlight" wire to "switch" a solenoid that has a larger wire providing battery voltage direct from the battery or ALT. This would help some, but you may also need a larger alternator and associated wiring due to additional electrical loads.
Chris
I have replacement EU headlamps to install and some have struggled getting them wired w/o difficulties. I know with the undersized stock wires, voltage drop can become an issue. The common workaround is to use the existing "headlight" wire to "switch" a solenoid that has a larger wire providing battery voltage direct from the battery or ALT. This would help some, but you may also need a larger alternator and associated wiring due to additional electrical loads.
Chris
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T4WD augury?
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In remembrance of my friend ARCHINSTL:
T4WD augury?
"Oh, do not ask, 'What is it?' Let us go and make our visit."
T.S. Eliot - "The Love Song of J. Alfred Prufrock"
"Now and then we had a hope that, if we lived and were good, God would permit us to be pirates."
Mark Twain