Denso Alternator

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plumkrazee70

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I have been searching for the 120 amp Toyota Denso, but cannot find a listing for it. Does anyone have a part number?

I have an EZ wiring kit, Classic Auto Air AC, FiTech FI, Electric in tank pump, electric fans, and a good radio. So I was hoping to get an upgraded alternator. I am aware of the brackets needed and have sourced those.

I came across this alternator, but its for a Magnum listing, not sure if it will bolt up to an LA 340
 
This one is 120 amp in a tight 60 amp case, note power stud location. Just something different.
HIGH OUTPUT ALTERNATOR Fits TOYOTA T-100 PICKUP 4RUNNER 3.0L V6 1993-1995 120AMP | eBay
Use this bracket for a clean install on SB.
Denso 60 amp kit, small blocks | AR Engineering

FC0142A1-7208-4E20-AD43-20BB75EE4976.jpeg
 
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95-2005 Dakota had a 136A version.


CHRYSLER 56005686AB Alternator
# 13842 - Denso (Nippondenso)
DENSO 121000-4270
 
Still looking.

Did Toyota actually come stock with a 120 amp alternator? I am leaning towards not at least I can't find one.
 
For that style alternator I think Toyota had a 60 and 70 amp only.
You can change pulleys.
 
Here’s what I did. 71 340, Denso 210-0138. There is about a good 1/4” between block and power stud, hard to see in picture. Ground down power stud plastic protector and power stud it self to get this room. And put a rubber plug on stud fitted in to plastic protector. That’s why I like the one above with the power stud out the side.
Used existing brackets tweaked.
I’m sure there’s a better way.

0533561B-CA12-4480-BE58-126E5A67DDCF.jpeg


3DF12B32-97D5-42B5-9AA0-09BA2E72D434.jpeg
 
Are you stuck on the denso? I've been using Delco CS130's (105amp) clocked at 12 and 3(LA),12 and 6(BB) for years. At fist I modified the factory brackets RB and LA,added A v-pulley (CVF pulleys), aftermarket connector and resister (load sensing)and 8 gauge wire directly to the starter relay battery post, All in $75, runs FAST xfi,dual stage fans,FAST in tank pump and the standard fare of electrical loads. The ability to purchase at any parts store was the driving force. CVF has a new billet bracket kit for doing this now,I bought it and replaced the old one,worked and fit great. The bracket cost more than the alternator.

20190422_152443[1].jpg
 
Are you stuck on the denso? I've been using Delco CS130's (105amp) clocked at 12 and 3(LA),12 and 6(BB) for years. At fist I modified the factory brackets RB and LA,added A v-pulley (CVF pulleys), aftermarket connector and resister (load sensing)and 8 gauge wire directly to the starter relay battery post, All in $75, runs FAST xfi,dual stage fans,FAST in tank pump and the standard fare of electrical loads. The ability to purchase at any parts store was the driving force. CVF has a new billet bracket kit for doing this now,I bought it and replaced the old one,worked and fit great. The bracket cost more than the alternator.

View attachment 1715349614

Not stuck on a sensor at all, just like the look.
 
Are you stuck on the denso? I've been using Delco CS130's (105amp) clocked at 12 and 3(LA),12 and 6(BB) for years. At fist I modified the factory brackets RB and LA,added A v-pulley (CVF pulleys), aftermarket connector and resister (load sensing)and 8 gauge wire directly to the starter relay battery post, All in $75, runs FAST xfi,dual stage fans,FAST in tank pump and the standard fare of electrical loads. The ability to purchase at any parts store was the driving force. CVF has a new billet bracket kit for doing this now,I bought it and replaced the old one,worked and fit great. The bracket cost more than the alternator.

View attachment 1715349614
Which voltage regulator do you use? Do you have any other pictures with alternator mounted with other brackets similar to a factory type mounting?
Looks like a good alternative.
 
I Google searched that number on the Amazon link and found this on BBdart.com

90 amp ND is part number 121000-3490
120 amp ND is part number 100211-603 and 100211-605
140 amp ND is part number 101211-7780

Hopefully, it will help someone down the road.
 
Which voltage regulator do you use? Do you have any other pictures with alternator mounted with other brackets similar to a factory type mounting?
Looks like a good alternative.
They are internally regulated, I can pics with the first brackets ,I'll post after work .
 
EFI, AC, electric fans, electric pump, etc.
Each of those items will have either a power rating or amp draw at nominal voltage.
Most things will draw more at higher voltage so if the nominal is 12 then figure it will be higher at 14.2 or 14.5 V.
Add 'em up and you have a good idea of the additional load you'll want the alternator to supply. All of those items will draw at idle speed so tht's key thing to find out about the alternator. How much power can it supply at idle speed? If it can't do it at idle, then the battery is going to take over. Some higher rated alternators have worse idle performance than their lower rated counterparts.
There's an output curve for a "78 amp" Chrysler revised squareback you can use for a baseline comparison to whatever you're looking at. You'll need to know the pulley ratio to convert to idle speed.
Shown in these two posts:
bouncing volt and ammeter
Adjustable voltage regulator...how to adjust?
 
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I Google searched that number on the Amazon link and found this on BBdart.com

90 amp ND is part number 121000-3490
120 amp ND is part number 100211-603 and 100211-605
140 amp ND is part number 101211-7780

Hopefully, it will help someone down the road.

Just be aware, the 120amp is thicker than the 70/90amp.

I actually still have a 120amp sitting on the shelf because the backing was just a little too thick to clear my edelbrock heads with MT valvecovers. The 70amp fits no issues
 
Just be aware, the 120amp is thicker than the 70/90amp.

I actually still have a 120amp sitting on the shelf because the backing was just a little too thick to clear my edelbrock heads with MT valvecovers. The 70amp fits no issues


I think I read that with Edelbrock heads. I have iron heads. I'll try and see if it works. Wonder if the 90 is smaller than the 120
 
The one I posted above is 120 amp reworked to fit in a 60-70 amp body just need to change pulleys. The largest factory alternator I know of that size and style is 60&70 amps.
 
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skidmark, apparently I left my flash drive with my older pics at my main workplace (m-f). When I go in Monday I'll search and pm them so as not to hijack the thread. I do believe I posted them before ,when the subject of installing these came up.
 
I am not sure if 70 amps will be enough.

EZ wire kit, EFI, AC, electric fans, electric pump, etc.

The Toyota 4Runner which the 60A alternator came from has all of that stuff and more. They have electric seats, power mirrors, electric rear window defrost, heated mirrors, etc.
 
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