• Hey Guest!
    British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
Tips
Tips

TR2/3/3A TR3 Nippondenso Alternator

Share this page

newmexTR3 said:
Does anyone sell just the conversion kit bits w/o the alternator?
Click to expand...

All you really need is the GM alternator, a 7"long 3/8 bolt and wide belt pulley.

You can get the pulley here https://cgi.ebay.com/ebaymotors/Wide-belt...sQ5fAccessories

ebay item #120313936595

I bought one from him years ago and he still lists them. Not a rare item at all. The belt is also a stock item at auto parts stores. Shout if you need the number but it's been discussed many times on this forum.
 
martx-5 said:
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.
Click to expand...

Thanks for the info. As my post noted, my assumption that it was a one-wire unit was based on the seller's description of it, per the eBay listing I provided, as a "Nipondenso 60A alternator single wire," complete with the same pic you posted.
 
Sorry about that. Yes, that is what it says, so I'm sure that's what he is offering. It is quite possible that he is using a different regulator in there and running it as a one wire. I'll have to ask the gurus here if such a thing exists...I'm sure it does for some farm or industrial applications. There are many different regulators for these Nippondenso units that are all interchangable. The original unit pictured however never came with such a regulator, and I would advise against using it. The one wire alternators have too many drawbacks for use in a car. The only thing that makes them attactive is the ease of wiring it up. Adding two more wires to the mix is not a big deal, and both of them are already there in the car.

My take on this is to use an alternator that is readily available at your local parts store. The one being offered is essentially one that doesn't exist in the parts manuals, or if it does, it will be a unit that will be hard to come by. If you have a problem with it, then it would have to go back to a rebuilder for repair as an R&R...more costly then an off the shelf unit. So, if you want to use the small Nippondenso unit, just ask for one fitting the applications that I cited earlier. BTW, that small Nippondenso unit has a 15mm rotor shaft, so your original generator pulley will fit without a having to bore it out.
 
martx-5 said:
My take on this is to use an alternator that is readily available at your local parts store.
Click to expand...
The only problem with this solution is that the person behind the FLAPS counter only responds when you ask for "an alt for a 1993 Geo Metro with the 1.3L motor, standard trans, no A/C." (For example only -- I have no idea if that's actually the right spec!) They have no idea where the "Denso 50 amp, small body, three wire alt" is.

<div class="ubbcode-block"><div class="ubbcode-header">Quote:]Do you have the part number for the Denso alternator you used?[/QUOTE]No. Sorry... That's why/how I wound up at the local auto-electric repair shop. He DID know where the "Denso 50 amp, small body, three wire alt" was. He was also readily able to swap out the pulley to a v-belt type, when the only problem with the "right" alt was that it had the wrong pulley on it. The guys at the FLAPS can't do that, and probably don't even have the right pulley for sale, if you want to do it yourself.
 
Moseso said:
The only problem with this solution is that the person behind the FLAPS counter only responds when you ask for "an alt for a 1993 Geo Metro with the 1.3L motor, standard trans, no A/C."
Click to expand...
Which I took to be the point; it's best to use an alternator that you know the common application for. Mine fits a 1968 Mercury Marquis with a 390 and automatic
grin.gif


This can still apply even if you have modified the case (as I did) or are using a custom pulley; as those items can be moved to a replacement alternator if necessary. BTDT
 
Back
Top