LS Alternator Upgrade Kit for Nissan RB

[r34killa]

Hi all.

I've been looking into builds and information online and have found a considerable amount of people upgrade their rb25det alternators to the LS alternator which outputs more power. 

I had some trouble previously with could have been an alternator but I have a spare now my engine is out. My engine should be going in soon. I will be running a haltech 2500, haltech dash and planning to get installed a headunit with apple play (i.e a screen of some sorts) and potential LED's etc. 

Do you think while my engine is out, I should upgrade the alternator? 

Please note, I do not have much mechanical knowledge, so apologies in advance if this is a silly question. 

[Shoota_77]

Definitely update it if you have big plans down the track.  Once you start adding more load to the electrical system (big fuel pumps, thermo fans, LED underglow lights....) you will need more oomph.  I would do it even if you don't need more as they look pretty and your 25 year old alternator is probably on it's way out anyway!

Any of the known brands are good - CPC, PRP, Frenchy's Performance, etc.  I've got a Frenchy's on mine with a Ling Long LS1 alternator off Ebay.  Don't ask me if it works, I have no idea!!  🤣

[Duncan]

Personally I would not change it unless the current one was causing a problem, just money that does not need to be spent.

There are also aftermarket new replacements for the factory unit which might be cheaper than an LS alternator + fitting kit.

Of course, if you are actually having voltage drop issues that is a different story...upgrade away

[Butters]

Yes upgrade, seriously consider buying a drop in one.  I bought the adapter bracket and sold it on.

Then I see so many ls1 alt failures (yes I know others have had success)

Alternator is something i want super reliable, so personally spending on a nice drop in is well worth it

[robbo_rb180]

Calculate max current draw then see if you need to upgrade.

If you do upgrade go a genuine brand Alternator not a cheap copy and upgrade cable to it, that's something 98% forget to do. 

Edited August 2, 2023 by robbo_rb180

[r34killa]

@robbo_rb180 @Butters @Duncan Thanks for the help guys. If I were to purchase anything I would purchase this one: 

https://franklinperformance.nz/products/ls-alternator-upgrade-kit-for-nissan-rb?variant=37295972253850

What do you guys think?   

[Butters]

2 hours ago, r34killa said:

@robbo_rb180 @Butters @Duncan Thanks for the help guys. If I were to purchase anything I would purchase this one: 

https://franklinperformance.nz/products/ls-alternator-upgrade-kit-for-nissan-rb?variant=37295972253850

What do you guys think?   

 

ooorrrrrrr   -- https://www.rhdjapan.com/ard-low-resistance-high-output-alternator-z31-r31-r32-r33-r34-c34-c35-wc34.html

[Kinkstaah]

Can confirm the ARD alternator works great.

[DaymoR32]

22 hours ago, r34killa said:

Hi all.

I've been looking into builds and information online and have found a considerable amount of people upgrade their rb25det alternators to the LS alternator which outputs more power. 

I had some trouble previously with could have been an alternator but I have a spare now my engine is out. My engine should be going in soon. I will be running a haltech 2500, haltech dash and planning to get installed a headunit with apple play (i.e a screen of some sorts) and potential LED's etc. 

Do you think while my engine is out, I should upgrade the alternator? 

Please note, I do not have much mechanical knowledge, so apologies in advance if this is a silly question. 

i have everything you mentioned on stock rb25detneo alternator, no issues