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Discussion Starter #21
chrisfromda909 said:
im assuming the alternator plugs from the mk2 plug in directly with no modification?
No plug modifications are needed. The other wire with the round connector will need to be cut and opened up a little for the 100A alternator. Nothing need to be done for the Camry alternator.

I added what modifications are needed to the write up this morning.
 

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Sweet Writeup-We should do a show-"Straight from uptown Everett, Its Junk in the Trunk-Featuring Supra parts and People-Stock to Swap-Mild to Wild!" Whips,CCS,Foose, Eat your heart out-Mike
 

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Chris,if you have an 84+ alt. in your car,you "could" have issues,with the alt.as it's running thru a relay in the drivers kick panel,that is non-existant in 84+ cars.


Now back to the BIG alt. Darrow has installed.My ID system at Nix,does not recognise the P/N.Closest I found was possibly a 100amp alt from a MKIV,bit I don't have one to compare.

P/N on Darrow's car right now...27060-42020.MKIV alt. was 42030.Darrow tried to ID the unit thru a Toyota sight,and it claimed to be a 84-91 Supra 100amp.But,it's larger than anything I have actualy seen on other than a Lexus,from memory.

Also,the Lex. alt.'s don't sell as cheap as the camry unit,trust me :D
 

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CarFreek said:
Sweet Writeup-We should do a show-"Straight from uptown Everett, Its Junk in the Trunk-Featuring Supra parts and People-Stock to Swap-Mild to Wild!" Whips,CCS,Foose, Eat your heart out-Mike

Bring the camera,I think we have enough to do for a full season :zzzzz:
 

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Discussion Starter #26
SilverMk2 said:
The other option for a high output alternator is late MR2s which supposedly had 120 Amp units. They are supposedly a direct swap on 7M, just a little fatter all around.
The MR2's with Electric Hydraulic Power Steering (EHPS) have the higher amp rating and it is only 100 amps. The mythical 120 amp alternator has been talked about before but no one has proven its existance. As far as my reasearch tells me the MR2 100 amp alternator has a different plug design, it is a 3 wire oval shaped plug.


Junkie,
Thank you for looking into it for me. I will up date the post with the part numbers and hopefuly some will come up with an application.
 

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Mythical 120amp alt. is in Mitchred88's car.92 sc400 Mitch ???
 

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Junkie said:
Mythical 120amp alt. is in Mitchred88's car.92 sc400 Mitch ???
Yep Jan of 94 or earlier SC400 is 120 amp. As far as I know of so far highest toyota amps available. Still looking for mark 2 stuff. I posted the sc alt swap earlier in this thread. Pretty straight forword for the 7M. :)
 

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DarrowConley said:
oops... my bad... did I say that.

The SC400 does have an option for 120amps. I know the MR2 is only 70 - 100amps.

Need to see if it fits on a MKII
Yea tops for the Mr2 is 100 amps and is fairly rare. As you stated it was with the power steering setup.
 

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I just did the 92 v6 camry upgrade to my fathers 85, it went flawlessly, other than trying to find a 43/64 drill bit. His alternator went out last week...glad i got it fixed.
 

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Late to party but anyway........ I did the exact same research that Darrow did and went the exact same route on my 84 P type. Darrow is dead right; the 92 Lexus/Camry 80 amp alternators are a drop in fit replacement, except for the pulley. HOWEVER, direct swap pulleys (17mm by 7 rib) do exist!
I took my boneyard Camry alternator to an auto electric shop and had it rebuilt/upgraded to approximately 90 amps. While I was there, the tech fished through a bucket full of old pulleys and found a perfect fit 17mm by 7 rib pulley and gave it to me. Unfortunately, he had no idea what the pulley came off of. He guessed maybe a Toyota truck or a Mitsubishi product, but that was simply a guess.

The icing on the cake for this FAQ, would be for someone with access to pulleys mounted on alternators in stock where they work, to identify a source alternator for this pulley and identify the make and model using that set up. So, then we can raid boneyards for pulleys. This pulley could originally be for another brand of import alternator application..
 

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OlSupraguy said:
Late to party but anyway........ I did the exact same research that Darrow did and went the exact same route on my 84 P type. Darrow is dead right; the 92 Lexus/Camry 80 amp alternators are a drop in fit replacement, except for the pulley. HOWEVER, direct swap pulleys (17mm by 7 rib) do exist!
I took my boneyard Camry alternator to an auto electric shop and had it rebuilt/upgraded to approximately 90 amps. While I was there, the tech fished through a bucket full of old pulleys and found a perfect fit 17mm by 7 rib pulley and gave it to me. Unfortunately, he had no idea what the pulley came off of. He guessed maybe a Toyota truck or a Mitsubishi product, but that was simply a guess.

The icing on the cake for this FAQ, would be for someone with access to pulleys mounted on alternators in stock where they work, to identify a source alternator for this pulley and identify the make and model using that set up. So, then we can raid boneyards for pulleys. This pulley could originally be for another brand of import alternator application..
nice find...that would be great if someone could find out what that pulley was for.
 

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Hey guys, I have a parts lookup or alt and starters. Id agree that the 100A was 90-92 LS400(not by the pn, by looks)
Note: a lot of ND and other Alt's can be taken apart and rotated 90 degrees, and then have a new PN#.
 

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Anybody come up with an alternator upgrade like this for the 82-83's yet? Or is the best option for these cars just to switch water pumps and pulleys and go with a ribbed belt to fit the Camry alternator?
 

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lechner said:
Anybody come up with an alternator upgrade like this for the 82-83's yet? Or is the best option for these cars just to switch water pumps and pulleys and go with a ribbed belt to fit the Camry alternator?

Have been slooooowwwwwwly looking at work,as time allows.I have the 83,a coworker has an 82.He won't be swapping in a 7mte,so he needs an upgrade.
 

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turbogoo1 said:
Im patiently waiting for the upgrade......
There is one, well two, switch to a 84-86 then to a camry. Some simple electrial mods and switch to the later plug.
 

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Just to add a little info, I had to machine some clearance off the back of a 5m pulley (mabe just a couple 100ths, not a big deal) so it didn't rub the camry alternator's case. The particular 5m pulley I used was a heavy solid cast piece as opposed to one of the thin-walled style pulleys. I have seen at least three different 7-rib pulleys on supra alternators. I believe the original factory pulley was a thinner-wall cast piece with four sort-of "dimples" on the inner face mabe for some sort of spanner wrench or SST. I've also seen stamped pulleys with a smooth rolled inner face. I'm sure that pulleys get swapped around wherever alternators are rebuilt and they may not come back with the original pulley, or at least the ones that get rebuilt for Autobone and OhReallys don't. Anyhoo, just something to look out for anyone else doing this mod.
 

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My sister was heading down to the auto parts store to get a new alternator and belt, so I did a little research that I thought should probably be added to that first post here.

The belt I came up with to switch to the Camry alternator (without swapping pulleys or anything) is off a 1990 Ford Escort. The AC belt (for factory installed AC, but not dealer installed) off a 1987-90 Mustang 4 cyl will also work. The 90 Escort Alt belt is a touch shorter, while the Mustang AC belt is a touch longer. Cheaper auto parts stores like Autozone split the difference and only stock one belt for both apps, which is perfect for us. So if you are heading down to buy a new alternator and belt, It is no extra work at all to simply buy an alternator for a 92 Camry and a belt for a 90 Escort and install just like the parts for an 84-86 Supra, except without using 1 rib on the crank or w.p.
 
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