86 V12 Alternator upgrade alternatives

Gentlemen,

I am looking in upgrade my failing alternator, but being in France where the GM alternators are not common I have to look to other alternatives, like the one from Land Rover or the 115A from the later V12 Jaguar or from the XJ40 as mentioned by Kirby and others.
As I have installed an Audio system I would like to have some extra Amps.

Here are the alternative options and prices for comparison:

Original
AEU1930

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Remanufactured
Brand: Bosch
upgraded to 90A
150 Euros shipped

New
Brand: DCP
75A
90 Euros shipped


Later V12 Jaguar
DAC5224

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Need to change the pulley.

Remanufactured
Brand: Woospa
115A
200 Euros shipped

Used
Brand: Bosch
115A
80 Euros shipped


Jaguar XJ40

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Need to modify mounting bracket and new pulley
120A

Remanufactured
Brand: Bosch
150 - 200 Euros shipped

New
Brand: Unknown
150 Euros shipped


Land Rover 90/110 & Range Rover Classic V8 3.9 & 4.2
YLE10100
13697

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New
Brand: SMP
120A
150 Euros shipped
A very appealing option as it comes with a V pulley and seems to be a direct fit.


image

New
Brand:SMP
80A
No pulley
130 Euros shipped


Which option would you gentlemen choose ?
And what would you trust more, an Aftermarket or a Rebuilt unit ?

Of course there is also the option of rebuilding the old alternator my self, rebuilt kits are available and quite inexpensive.

Looking forward to hearing your opinions.

Best,
Aristides

Note that the Bosch that fits the Jaguar V12 cannot easily replace the Lucas that fits the Jaguar V12. The mounts are different, and the Bosch uses a ribbed belt so you’d have to change either the alt pulley or the crank damper.

I’d be tempted to go with the Land Rover 90/110 for the direct fit.

Aristides
I used the Land Rover unit from my 1994 Range Rover into my 1986 V12. I had pulled it thinking it was in trouble and rebuilt it. About that time I wanted more amps under the Jag hood, so bought an aftermarket alt. for the RR and sold the RR. It’s a great fit with lots more amps. I also wanted to upgrade my audio system, and have more current for my electric fan conversion. Then I bought an AGM battery for the Jag. ExtremePower. Amazing starting power and capacity. Somewhere around 2000 amps (not sure how that’s rated). about $250. Between the alternator and the battery, it’s all I’ll probably ever need.

Brent

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Thank you for replies gentlemen.

I ordered the Land Rover 90/110 aftermarket alternator.
Will keep you posted on the results.

All the best,
Aristides

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Update.

New Alternator arrived and installed.

ALT319
120A
Internal fans.

Original fitment:
Land Rover 90/110 Dhmc 3.5 V8 12V 120A Single V Rib 83-90 Suv

Reference OE/OEM Number:
LRB00367, LRB367, 714/32200, 714/40154, 185046522, 20130212, 63320312, AL2912, AEA2291, 214120852, LRB00291, 20130195, VAP319ALT, ALT319

Also fitted on Perkins 1000-6 HR1, 2, & 5 and 1140D-E44TA engines

It comes with a single V pulley, it’s indeed a direct fit and the pulley is the same diameter as the Lucas alt.
Only modification needed was a couple of spacers at the tension adjustment mechanism.

Alt seems to work fine, and Voltmeter shows 13.5V at idle.

Best,
Aristides

2 Likes

Very nice!
Right now I am modifying a few little bits to have 2 alternators. One will run off previous smog pump pulley and will serve as an auxiliary alt. I will be able to hit a toggle to engage auxpower in the event of generator #1 failure.
Totally unjustifiable, but I have always wanted to do it so I am. Plus since I travel w it a good ways from home I have a backup until I can make it back to Garage.

Many times, the only reason I ever had!!!

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Hi Aristides,

I would like to change my alternator for the same than yours for my 1985 XJ12.
Would you be so kind telling me where did you buy it from? So I don’t go wrong?
Thanks in advance,

Best Regards,

Greg

Hi Greg,

It was ebay from the UK.
And by the way, it’s still working fine.

Many Many thanks Aristides for your appreciated feed back.
I will follow your instructions.

May I ask you if you updated your batterie too?

Best Regards,

Greg

Makes the whole worlds turn… unintended pun…

Carl

You are most welcome Greg.
Battery is stock but new.
Only other upgrade was to add a extra ground between engine and chassis.

Thanks Aristides, just ordered one from UK, very cheap.
Cheers, Brian.