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Your belt could be glazed or there could be grease or oil on the pulleys. Make sure everything is clean and dry. Having the belt too tight can result in bearing noise from the alternator, but that is usually continuous regardless of electrical load.
 

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Just did this upgrade on Sunday and it went flawlessly. If you didn't know it was the alternator from a Camry, you wouldn't know the difference. The alternator bolted right up, no problems at all!! The belt was a bit tricky though. I ended up sitting with a dude a Autozone and going through a few different options and found a belt with the right lengeth but was only 5 ribs. So far I haven't had any problems and my dead battery and lack of power while driving is totally gone. I can run my lights, both front and rear wipers, heater, and rear window defrost, plus my huge 2000 watt amplifier and full volume and my voltage meter doesn't move. Thanks for the brilliant post!
 

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92 Camry with 2.2L also has a 80A alt, however with a 5 rib pulley

UPDATE: Got the 2.2L alt to work, it's shaped similar to the 100A LS 400 alt. To get it to fit i had to mount the top bolt first, then the bottom. i used a 37" 6-rib belt with it, and my 5m alt pulley.
 

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Can someone measure the diameter of the stock pulley and post that please?

...and not from the outer edge of the pulley, but from where the belt sits. That may not be clear so here...




I no longer a stock pulley to measure since I installed the es300 alt.

rick
 

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i just recently put a 160 AMP mk-III upgraded alternator on my 6m. (Mah huge stereo was killing my electrical system) it is much much happier now. bolted right on there. had to convert to the round plug and i had to drill out my old pully to make it fit the new alt. easy swap for MORE POWER!!!!!
 

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i just recently put a 160 AMP mk-III upgraded alternator on my 6m. (Mah huge stereo was killing my electrical system) it is much much happier now. bolted right on there. had to convert to the round plug and i had to drill out my old pully to make it fit the new alt. easy swap for MORE POWER!!!!!
Will 160amp alternator be fine to use with the stock wiring?
 

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Yeah good luck with that LOL!
Love the response, but most of these guys don't have engineering degrees and may not see your sarcasm. I^2*R heat loss? Good bye fusible links.

Back in 1980 when these cars were designed, the engineering finagle factor was usually 2.0 to account for manufacturing errors (today 1.1-1.5, quality has really improved). Your car was designed for a 60 amp alternator, meaning at most 2x that (120 amps @ 12 V) assuming everything is at design spec.

And today your electrical connections are approaching 30 years old (oxidation in the connectors, etc). I wouldn't put more than 90 amps (OK 50% more than OEM) into a MK II Supra wiring harness (thing is old and wires break). Going 160/60 is asking for fire. It might work for awhile. I've seen a couple of cars in the junkyard with melted fuse boxes and big stereo wires coming out of them (big stereos gone by the time they get to the junkyard)
 

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I^2*R heat loss? Good bye fusible links. Your car was designed for a 60 amp alternator, meaning at most 2x that (120 amps @ 12 V) assuming everything is at design spec.
Excellent information. This makes me feel better about the 80A alternator waiting to be installed on my daily driver. Thank you!
 

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fusible links are fine. fuse box is fine. my car is happier than ever.

Why would anybody have big stereo wires coming from the fuse box? thats retarded....maybe thats why you found it burned down in a scrap yard.
 

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From: The alt is from a 1992 Camry v6 3VZFE (Round Plug). 93+ alts will not work because of plug design (though you can modify the wiring harness)
Any more info than this on the +93 Camry alt? I already have an 83 that has the harness converted to the 85 style plug, and I'm running an 85 stock alt on a 6m, so adapting the harness to the +93 can't be that big of a deal, and provides another option. Also, of the alternators mentioned in this thread, none are more available to source used than a +93 Camry. If all I would have to do is convert the harness to connect to the +93 alt, and use a 6 rib escort belt, I'm thinking that may be the way for me to go.
 

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I picked up the 80 amp alt and went with the 1990 Ford Escort belt...no way that was going on the car...way too short! Then I went with the AC belt (for factory installed AC, but not dealer installed) 1987 Mustang 4 cyl will also work...way too long to even be tount against the 3 pulleys. Then I went with the Camry belt...also way too long. WTF?!? Are there any other options for a belt or am I just going to have to use a 17mm drill bit and go to work? Maybe my friends at Advance Auto Parts got the parts incorrect...not sure.
 

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I picked up the 80 amp alt and went with the 1990 Ford Escort belt...no way that was going on the car...way too short! Then I went with the AC belt (for factory installed AC, but not dealer installed) 1987 Mustang 4 cyl will also work...way too long to even be tount against the 3 pulleys. Then I went with the Camry belt...also way too long. WTF?!? Are there any other options for a belt or am I just going to have to use a 17mm drill bit and go to work? Maybe my friends at Advance Auto Parts got the parts incorrect...not sure.
Slice a rib off of your stock belt, bro. I did it and it worked fine.
 

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I picked up the 80 amp alt and went with the 1990 Ford Escort belt...no way that was going on the car...way too short! Then I went with the AC belt (for factory installed AC, but not dealer installed) 1987 Mustang 4 cyl will also work...way too long to even be tount against the 3 pulleys. Then I went with the Camry belt...also way too long. WTF?!? Are there any other options for a belt or am I just going to have to use a 17mm drill bit and go to work? Maybe my friends at Advance Auto Parts got the parts incorrect...not sure.
I took the liberty of quoting a few old posts from this thread. I hope the information is useful!

FROM EARLIER IN THIS THREAD.....

This is from the first post

[The Camry alt] is from a 1992 Camry v6 3VZFE (Round Plug). 93+ alts will not work because of plug design (though you can modify the wiring harness).

Tell the dealer you want an alternator form a 1992 Camry V6 3VZFE and you should get the correct alternator. I believe 91 alts are different.
I had a fitment issue with the Ford Escort belt and did some research. The stock MK2 alternator uses a 7-rib 36.2" long belt. The 1992 Toyota Camry V6 uses a 6-rib 37" long belt. The pulleys are virtually the same diameter, so I'm going to try the 37" long Camry belt and see how that works out. Will be nice to be able to say you need an alternator and belt for the same car when buying these parts!!! ;)

Will post my results when I complete the project.
OK, I just completed this upgrade and would like to offer my :twocents: for people who do this in the future and don't want to swap out the alternator pulleys...

When you buy your new 1992 Camry alternator, just get the belt that goes with it! The original '84-'86 Supra uses a 7-rib 36.2" long belt. The '92 Camry V6 uses a 6-rib 37" long belt. The adjustment may be close to being all the way extended, but there was still a little bit of room at the end of mine when I got it tight enough. Everything else was plug-n-play.

EDIT: FYI - The 1991 Camry came with a 2.5L V6 and the alternator is only 70 amps. The belt for the '91 Camry is also a different length.
Which Camry belt did you get?! The one for the '91 or the '92 Camry?! The '91 Camry belt is 41" long!! :eek: Using the '92 Camry belt on my '86 w/ the 6M worked nearly perfect! It shouldn't matter whether you have a 5M or 6M when doing this upgrade. All the accessories are identical.
 

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Slice a rib off of your stock belt, bro. I did it and it worked fine.
Perfect! Thanks for the solution...worked great. Hope it lasts...but so much easier than the belt search.
 

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Quote
Originally Posted by Supradavis
OK, I just completed this upgrade and would like to offer my for people who do this in the future and don't want to swap out the alternator pulleys...

When you buy your new 1992 Camry alternator, just get the belt that goes with it! The original '84-'86 Supra uses a 7-rib 36.2" long belt. The '92 Camry V6 uses a 6-rib 37" long belt. The adjustment may be close to being all the way extended, but there was still a little bit of room at the end of mine when I got it tight enough. Everything else was plug-n-play.

EDIT: FYI - The 1991 Camry came with a 2.5L V6 and the alternator is only 70 amps. The belt for the '91 Camry is also a different length.


I just picked up a 1991 v6 (1vz-fe) alternator that was remanufactured from the local u pull it. its an autozone world class 14463. the supra reman unit was 14643. the 14463 camry unit is rated at 80 amps, has mounts at 12 and 6 o'clock, and has the round plug. its slightly longer but otherwise very identical. oh and it has the 6 rib pulley. so im thinking the oe was 70 but reman WC was 80. Would anyone be interested in pics? Im taking side by sides anyway.

I got lucky the alt i got was in fantastic shape, still shiny. maybe they replaced it thinking that was the problem. When they realized it wasnt, they junked it. Unbelieveable but i have family that junks cars for less lol
 

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Here's another easy 100 amp option. I had picked up a 100 amp alternator from I believe a late 90's LS400 (pn 27060-20010) and rebuilt it with ND component parts ordered from Napa! If that number is from something else, let me know. I also chose to just order an adapter harness to mate with the 85p alternator plug rather than change it. Lazy I guess. I had already mocked up a custom mount but hadn't done it yet. Anyway, a couple of years ago, a former forum member local to me decided to go the Nissan way for better support for track days and had offered me his stash of Supra / Cressida parts for relatively cheap provided I took everything. This is not as wonderful as it might seem. There is some 82 stuff because I noticed a vacuum diaphragm distributor at the time. Quite a while later, I saw an 82 alternator and, noticed that it mounted differently because of it's lower mounting ears being different and coincidentally, just like the LS 400 alternator. Note that the LS400 alternator doesn't pivot to adjust its belt tension, it's solidly mounted and the adjustment hole is threaded. The lower mounting ears are two separate ones and the mounting points are at 1:00 and 5:00 as opposed to 12:00 and 6:00 for our cars. This led me to look for an 82 alternator bracket and eventually I found it. I did have to grind some additional clearance on the inside in front of the rear ear on the bracket but it took just a few minutes. The LS 400 alternator mounted to the front of the 82 bracket and lined up perfectly with the outside grooves of both the water pump and the balancer. I did have to use a 10mm spacer and a corresponding longer adjustment bolt for the top mount. I also had to use two separate bolts on the mounting bracket instead of one long one. I chose not to replace it's slightly larger but 6 groove pulley purely because it cost $17 I believe. I used a 6 groove 38.8" belt as opposed to the stock 37.2" 7 groove belt. It adjusts fine and works great and the clearance to the lower radiator hose is only slightly less than it was and certainly more than adequate. I've noticed that my 100 Watt high beams, driving lights and killer stereo all are happy now, even at idle. Fortunately, here in the PNW, the rear defroster is rarely needed. I'm planning on increasing the charging wire size in the near future as I'm in the middle of some other mods at present. So, worst case scenario would have been to change the harness plug and spend a few minutes at the grinder. The trip to the hardware store for a few bolts was a bonus! 82 alternator brackets could be quite useful now and this would also be a good upgrade for an 82 with the charging mod of course. I wish I had a stash of them! I could retire. Wait a minute, I already have. I must have forgotten. Forgotten what?
 
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