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TR2/3/3A TR3 Nippondenso Alternator

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Hatman

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Does anyone know the part number for the Nippondenso alternator to use in a TR3 generator-to-alternator conversion? Searching here and doing a Google search turned up a couple of threads discussing the alternator, but none had any info on what Denso alternator they actually used. A part number would certainly make it easier to buy the right alternator. Anyone have?

Thanks.


Mark
 
I'm not sure but I don't think it is a straight swap. There might be an adapter plate added to it that has clocking adaptability (huh) usually to it.
 
Understand that. Again, what I'm looking for is the <span style="font-style: italic">model number of the alternator</span>(or even the make/model or the car which the alternator fits). Everything I can find just mentions a "Denso alternator", but as there are dozens of Nippondenso alternators, I need more information.
 
Mark- My bad. I didn't read your post thoroughly enough. I thought you were talking starters.
Sorry
My Bad.
 
I'm using the typical 7127-3 alternator conversion on my TR4, but the NipponDenso does look a little more compact which should help on the TR3. I found one discussion of using a 35 amp unit on a TR4, model 10211-1660 which is for a Toyota forklift.

Here's a site showing pictures of remanufactured units: Alternators

The 35 amp unit has one mounting lug, but I wonder if this 40 amp unit with 2 mounting lugs would work. If you can find counter sales for these you probably could get a good idea if it would fit.

Randy
 
Have you seen the Nippondenso alternator conversion kit from Standard Performance on eBay? I've been eyeing that for a while, but, like you, I did not find a specific number that would let me do a price comparison so I am still researching all of my alternator conversion options. The install kit looks neat, too.

Please share your findings once you get them.

Thanks,
Jeremy
 
OK, if the unit you're talking about is the one in the pic below, that is the industry Lester number 14684. It fits...

87-88 Chevy Sprint
89-95 Suzuki Samurai
89 Suzuki Sidekick

It's physically a very small unit rated at 50-55 amps. Besides the battery hook-up, it has a three terminal plug in. One is for the dash lamp, one is is for ignition turn-on, and the other is a dummy...it doesn't do anything.
 

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CinneaghTR said:
Have you seen the Nippondenso alternator conversion kit from Standard Performance on eBay? I've been eyeing that for a while, but, like you, I did not find a specific number that would let me do a price comparison so I am still researching all of my alternator conversion options. The install kit looks neat, too.

Please share your findings once you get them.

Thanks,
Jeremy
Click to expand...

Couldn't find anything on a eBay with a search, but in a roundabout way finally found this listing:

Item number: 220282950407

The fact that the guy misspelled "Nippondenso" didn't help . . .

Interesting kit, but pricey. Plus it looks like he's using a single-wire alternator, which isn't what I want.
 
Hatman said:
CinneaghTR said:
Have you seen the Nippondenso alternator conversion kit from Standard Performance on eBay? I've been eyeing that for a while, but, like you, I did not find a specific number that would let me do a price comparison so I am still researching all of my alternator conversion options. The install kit looks neat, too.

Please share your findings once you get them.

Thanks,
Jeremy
Click to expand...

Couldn't find anything on a eBay with a search, but in a roundabout way finally found this listing:

Item number: 220282950407

The fact that the guy misspelled "Nippondenso" didn't help . . .

Interesting kit, but pricey. Plus it looks like he's using a single-wire alternator, which isn't what I want.
Click to expand...

The pic I posted above is the item number that you linked to from ebay. Read my post above, it's not a one wire alternator.
 
Hatman,

I have been looking at using this for my generator conversion.....

https://www.trparts.com/newitems/altkit.html

Would be interested to hear some opinions......price seems to be right at least.

Cheers,
M. Pied Lourd
 
That's the unit I used on my TR3. It's a Delco 10SI (Lester # 7127) that's just about as bullet proof as you can get. The alternator is available at any parts stores due to the number of GM cars built using that unit. You should be able to pick one up at your FLAPS for about 1/3 what the kit on ebay is selling for. If you're staying with original wide belt, you can use the pulley from your generator, but you will have to bore it out to 17mm (0.669"), as the shaft on the generator is 15mm.
 
newmexTR3 said:
Does anyone sell just the conversion kit bits w/o the alternator?
Click to expand...

I've been seriously considering doing such a thing. The biggest headache would be having the pulleys made for the wide belts.
 
I don't have the info handy, but someone already makes a pulley that will fit the wide belt and an alternator shaft. I got the contact info from Herman van den Akker after seeing the pulley on his daughter's car, but I've probably managed to lose the business card it was scribbled on.

On my TR3A, I just had a local machine shop bore the original generator pulley to fit the alternator shaft. Cost $10 the first time (around 1975), $15 the second (maybe 10 years later).

Next time I'll do it myself :jester:
 
M_Pied_Lourd said:
I have been looking at using this for my generator conversion.....
Click to expand...
Based on my experiences with a similar conversion (I used a Ford externally regulated alternator that is slightly smaller physically than the 10Si); I believe it is important to tie into the rear generator mount. Using just two points seems to let the alternator resonate at certain engine rpms, and the subsequent motion loosens bolts and shortens belt life. Once I added a long bolt and spacer to tie into the rear mount as well, all my other problems disappeared.

Judging by the photo, Art's conversion does not tie into the rear mount. Likely fine if you don't drive your TR much, but ...
 
You can fab a small bracket to tie down the 10si to stabilize things, so far its worked well for me.

Here's a good source for the wide pulley, I used it on my GM alternator and it works great:
Quick Start Alternator Parts


They also have what looks to be the alternator for TRs, maybe:
Nippondenso Lester 12184 55 amp alternator

Now need to look for a cheaper remanufactured alternative..
 
This might be what you're looking for: https://store.alternatorparts.com/universalalternatormountingbracketsandaccessories.aspx

My story goes like this. I bought a Delco 10SI at Napa -- and got the pulley and "universal mounting kit" from the source above. Couldn't stuff it all in to my TR3. Dropped back 10 and punted. Got a 50 amp rebuilt Denso from the local rebuilder -- and switched to the narrow belt set-up. The bar-none biggest problem I saw looming was the paucity of belt sizes available in "wide" belts. The stock belt size was NOT gettin' it with that mounting system. I can get narrow belts in 1/2" increments. Presto! One that fits! One of the advantages of going the local rebuilder route was that when he pulled a perfect looking little alt off the shelf that had (as most of them do) a flat-belt pulley on it, I said. "Can I get a V-belt pulley on that?" He said. "Sure," grabbed a pulley out of a box full of 'em, sprayed it black and put it on the alt.
 
martx-5 said:
The pic I posted above is the item number that you linked to from ebay. Read my post above, it's not a one wire alternator.
Click to expand...

I based that on the description of the seller, who notes it's a one-wire alternator. Here's the item number:

Item number: 200255550366

Do you have this alternator yourself and can verify it's a three-wire unit?
 
Hatman said:
...

Item number: 200255550366

Do you have this alternator yourself and can verify it's a three-wire unit?
Click to expand...

No, I do not have the Nippondenso unit in my TR3. I have the Delco 10SI. I work for a large rebuilder, and showed the picture to the alternator guru here. He instantly recognized what it was and gave me the info as I posted above. What makes you say it's a one wire??? If you look at the back view of the pic you will see a dark round section peeking out from the gray tin cover. That's where the extra wires plug in. It's a three terminal connector, two of which are used in this application.
 
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