RB20 Alternator replacement

Discuss the RB20, RB25 and RB26 series engines.
AxiOn419
Posts: 263
Joined: Mon Sep 12, 2005 5:52 pm
Car: 1991 240sx SE Super-Hicas w/ RB20DET
Contact:

Post

Hello, its been a while since I have posted anything but I just had an issue come up. My RB20's alternator kicked the bucket today. At first I thought I had broken a rod because the sound the engine was making was absolutley horrible but turns out it was actually the alternator, never knew they could make such a terrible sound. I know you can fab a bracket to fit a Quest alternator but I would really prefer something that will directly bolt on, is my only option an rb20 alternator?

I did a search and found info about the quest alternator but at this point it is not a good option for me. I work full time as well as go to school full time which is why I need my car running as soon as possible.

I am pretty sure I have a spare KA alternator which I heard I could use as well if I fabricated a bracket.

1. Is there a direct bolt on replacement for the rb20 alternator that could be found at a local auto part store?

2. If not, is it generally worth it to have an alternator rebuilt?

and

3. Any information on the KA alternator swap if it is my last option?

Thank you in advance



edit: Or does anyone have a working rb20 alternator that they are willing to sell?


gawdzilla
Posts: 2028
Joined: Sat Sep 18, 2004 11:51 am
Car: none

Post

i have a used 26 alternator (90-amp) that should bolt on directly to your 20 if you want to buy it. email me if interested.

User avatar
nizmo zilvia
Posts: 751
Joined: Thu Jul 07, 2005 5:09 pm
Car: 95 240sx w/ S14 SR20 Blacktop

Post

I have 2 RB20 Alternators sitting around

AxiOn419
Posts: 263
Joined: Mon Sep 12, 2005 5:52 pm
Car: 1991 240sx SE Super-Hicas w/ RB20DET
Contact:

Post

Zilvia, are they in good working condition? If so, how fast could you ship one assuming you are willing to sell one?

I did not think the 26 alternator would bolt on to a 20 but you would know more than I would about this gawdzilla, sounds like it could be another option

User avatar
nizmo zilvia
Posts: 751
Joined: Thu Jul 07, 2005 5:09 pm
Car: 95 240sx w/ S14 SR20 Blacktop

Post

I'll sell you the one that I pulled from my running RB and I'll use the other one to see if it works lol. I can do $50 shipped.

User avatar
bboyracer
Posts: 3
Joined: Wed Jan 04, 2006 6:25 pm
Car: 93 nissan 240sx

Post

Any word on this? I have a manual & did some research. All the OEM RB series work turbo & non - rb20, 25 & 26. The part # is LR180705 (12v-80a) - made by Hitachi Now, finding that is another thing - any leads? I would really prefer one that's new / rebuilt /w a warranty. I actually have a bracket to hold the ka-alt. they're supposed to be the same amperage, so it's not really enough. The quest swap seems like a lot of work.

User avatar
Coolwhip
Vendor
Posts: 3138
Joined: Fri Feb 06, 2004 7:29 am
Car: RB26 Raw Brokerage War Machine
Location: Orlando, FL
Contact:

Post

bboyracer wrote:Any word on this? I have a manual & did some research. All the OEM RB series work turbo & non - rb20, 25 & 26. The part # is LR180705 (12v-80a) - made by Hitachi Now, finding that is another thing - any leads? I would really prefer one that's new / rebuilt /w a warranty. I actually have a bracket to hold the ka-alt. they're supposed to be the same amperage, so it's not really enough. The quest swap seems like a lot of work.
There were 2 alternators manufactured and used on the later RB26's. One by Hitachi the other by Mitsubishi (not the same).

User avatar
bboyracer
Posts: 3
Joined: Wed Jan 04, 2006 6:25 pm
Car: 93 nissan 240sx

Post

mmmm....okay. - mitsu alt on an rb???

straight from the manual - page EN-529

Alternator type CA18i hitachi LR170-717 (12-70)

mitsu A2T47794

rb20e rb20de rb20det/25 rb26dett LR180-705 LR180-705 LR180-705 LR180-705 (12-80) (12-80) (12-80) (12-80)



it also lists

starter, coil, distributors, & plugs

Anyways, anyone find an equivolent /w out all the bull**** & moding?



Return to “RB20DET / RB25DET / RB26DETT Forum”