OEM 120A alternator upgrade, from J105? (7 Viewers)

[mk216v]

Curious if anyone can help me shed light on this;
I have two rigs, one a 1HD-T (from a J80), and then a 1HZ in a J105. Fairly similar engines in their exterior layouts, some part crossovers, etc.

Looking at upgrading the alternator in the 1HD-T. Per partsouq it's an 80A # 2706017170 from '92-95 "1HDT..HDJ80..ATM 12V 80A";

https://partsouq.com/en/catalog/genuine/unit?c=TOYOTA00&ssd=%24%2AKwGwhJWT8-zA6O_S3fSE4ej83NvFtLu2t6WKufH3xNPHy83Fl5CAxsbK0dHX1s-Vkrfd8_fzwsnQt-rknci7tLW1s7Ww7eD6_O3E_qD3prz5j-uuoeenuLL5-K68rcL4pubr56a86vnr5Orgp7ihtb_r5uuuoe3roLmmt-Lh_re2pvj89e3im67r6_emv6DVzcj5-evr8Ka_oMnQt-rknci7tLW1s7Ww7eD6oK-m5uGhvqTs7Pi3t7SnrqHp5fnv68rHzr2yz6nBlYWM2tSmqaDl7eL57_i3_gAAAADxWD-N%24&vid=0&cid=1&uid=433616&q=JT111TJ8007016653

Looking at the 1HZ/J105 options, they can have either 80A or 120A, although the 80A is a different part # than the 1HD-T above. Unsure what's actually in my J105, appears maybe the electrical connector is different than that on J80 1HD-T;
80A # 2706017220 "1HDT..HDJ100;1HZ..HZJ105..ARL,GCC;1HZ..HZJ105..LHD..GEN 12V 80A"
120A # 2706017230 "1HDFTE,1HZ..HDJ100,HZJ105..ARL 12V 120A"

https://partsouq.com/en/catalog/genuine/unit?c=TOYOTA00&ssd=%24%2AKwEtGQgxfVxaTSdfVXg1I3VhQUZYKSYrKjgXJGxqWU5aVlBYCg0dW1tXTExKS1IIDypAbmpuX1RNLHd5BFVfLCgoLikoc3BkYXBZYz1qOyFkEnYzPHo6JS9kZTMhMF9lO3t2ejshd2R2eXd9OiU8KCJ2e3YzPHB2PSQ7Kn94YiknO2VhaHB_BjN2dmo7Ij1IUFVkZHZ2bTsiPVRNLHd5BFVfLCgoLikoc3BkPTI7e3w8IzlxcWUsKyk6Mzx0eGRydldEUykvK0s2AQsZTU1IOjM8f3Iiam4tLWQAAAAAc8Z8Ig%3D%3D%24&vid=0&cid=1&uid=429525&q=JT711PJA507003580

Anyone know if I can replace the J80 80A # 2706017170 from '92-95 "1HDT..HDJ80..ATM 12V 80A" with the J105 120A # 2706017230 "1HDFTE,1HZ..HDJ100,HZJ105..ARL 12V 120A"?

Thank you in advance.

 

[DivByZero]

There's also another option - the 27060-17180 100A alternator which was fitted to 1HZ engines in some regions. I have one here. I can tell you from experience, the higher amp output alternators are physically larger (to make room for those extra windings), and require a different shaped upper mounting bracket as a result. Don't just look at the alternator itself, look at the mounting bracket, as you'll have to change that too most likely if you're changing amp rating. I did a small write-up on some alternator options for these engines in the 80 series lineup here:

FZJ80 / LX450- Alternator Refurbishment or Replacement?

I’ve got a 97 LX450 with just over 180k on the clock. It has a dual battery setup that uses a Redarc DCDC charger. I noticed on a short trip this past weekend via my Scangauge that the voltage often dips below 13.5V. By all accounts, the alternator is original. My question is whether tis...

forum.ih8mud.com

As for connector compatibility between 80 series and 105 series variants, someone else will have to speak up about that, but I suspect you could confirm easily enough by looking at pictures of the physical connectors, and for extra peace of mind, cross-checking the wiring diagrams in the service manuals.

 

[mk216v]

There's also another option - the 27060-17180 100A alternator which was fitted to 1HZ engines in some regions. I have one here. I can tell you from experience, the higher amp output alternators are physically larger (to make room for those extra windings), and require a different shaped upper mounting bracket as a result. Don't just look at the alternator itself, look at the mounting bracket, as you'll have to change that too most likely if you're changing amp rating. I did a small write-up on some alternator options for these engines in the 80 series lineup here:

FZJ80 / LX450- Alternator Refurbishment or Replacement?

I’ve got a 97 LX450 with just over 180k on the clock. It has a dual battery setup that uses a Redarc DCDC charger. I noticed on a short trip this past weekend via my Scangauge that the voltage often dips below 13.5V. By all accounts, the alternator is original. My question is whether tis...

forum.ih8mud.com

As for connector compatibility between 80 series and 105 series variants, someone else will have to speak up about that, but I suspect you could confirm easily enough by looking at pictures of the physical connectors, and for extra peace of mind, cross-checking the wiring diagrams in the service manuals.

Sorry for the delay--been traveling.
Thank you so much for this info!

So it looks like the upgrade could be either;
#1 27060-17180 100A "HDJ80 / HZJ80 100A"
+ 16381-17020 bracket

or maybe
#2 27060-17230 120A "1HDFTE,1HZ..HDJ100,HZJ105..ARL 12V 120A"
+ same bracket below

1638117020

1HZ..HZJ105..ARL 12V 120A

https://partsouq.com/en/catalog/genuine/unit?c=TOYOTA00&ssd=%24%2AKwEtGQgxfVxaTSdfVXg1I3VhQUZYKSYrKjgXJGxqWU5aVlBYCg0dW1tXTExKS1IIDypAbmpuX1RNLHd5BFVfLCgoLikoc3BkYXBZYz1qOyFkEnYzPHo6JS9kZTMhMF9lO3t2ejshd2R2eXd9OiU8KCJ2e3YzPHB2PSQ7Kn94YiknO2VhaHB_BjN2dmo7Ij1IUFVkZHZ2bTsiPVRNLHd5BFVfLCgoLikoc3BkPTI7e3w8IzlxcWUsKyk6Mzx0eGRydldEUykvK0s2AQsZTU1IOjM8f3Iiam4tLWQAAAAAc8Z8Ig%3D%3D%24&vid=0&cid=1&uid=429525&q=JT711PJA507003580

https://partsouq.com/en/catalog/genuine/unit?c=TOYOTA00&ssd=%24%2AKwF8SFlgLA0LHHYOBClkciQwEBcJeHd6e2lGdT07CB8LBwEJW1xMCgoGHR0bGgNZXnsRPzs_DgUcfSYoVQQOfXl5f3h5IiE1MCEIMmw7anA1QydibStrdH41NGJwYQ40aionK2pwJjUnKCYsa3RteXwnKidibSEnbHVqeyEpM399DGszMT4jc1l-bCY8a3RtHgNZOylsJjtrdG0CHiAoNB4FCXx-eHh6JCw9fm1kay0sanA1Ljx_fH15bGNqJ3Q7P2wHEgN_f30YOl5GAx0bGGxjaix-fSd0fXs0AAAAAOSKofk%3D%24&vid=0&cid=1&uid=429473&q=JT711PJA507003580

PS--Note that 27060-17220 80A from the 2nd J105 page link above coordinates to "1HDT..HDJ100;1HZ..HZJ105..ARL,GCC;1HZ..HZJ105..LHD..GEN 12V 80A", which looks to use this different bracket;

1638117010

1HDT,1HZ..HDJ100,HZJ105

Electrical connector shouldn't be a big deal to get sorted.
Will advise how this works out, once I get to that part of the project...