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Alternator upgrade from Lucas 18ACR.


Scooby Jim

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Hi I currently have a Lucas 18ACR alternator on my Series V8, and I'm after something that can do a bit more than 45amps. As I want to eventually fit a winch and spot lamps / flood lamps.

What can I directly fit in the place of the 18ACR, obviously not concerned with upgrading the cabling, as I'm going to do that anyway.

Just surprised its such a large alternator and produces only 45amps, I have had one 1/3 the size that produced more.

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the diagram in http://forums.lr4x4....showtopic=44909 should explain

a Lucas 17ACR 65amp unit might fit, but you'll have to upgrade the main battery feed & starter cables.

I'll have a look for that alternator.

Only thing that bothers me about the diagram is that it shows two large connections, marked as +ve and one small.

Mine has One large and two small, which may sound like splitting hairs, but I just want to make sure its right.

I've a Bosch 120amp alternator from a Vauxhall in my garage and was going to see if that would fit as its only a main thick cable and a battery warning light, and I've the Vauxhall cabling here, but it won't fit the bracket.

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I can't see it very well but i think that mount would accept any lucas a127 alternator, of which many amp ratings are available, i had an 85 amp one from a classic rangie on mine

This is the bracket.

2012-10-21-165800x450.jpg

2012-10-21-164800x450.jpg

I would go with the A127 flavour.

I'll have a look for one.

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that bracket will definitely take an a127, it was used on a large range of vehicles, tdi's, v8, 2.5 petrol etc. occassionally the mounting lugs are opposite but this can be changed, you simply take the through bolts out and rotate the front housing without pulling it apart then replace the through bolts.

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that bracket will definitely take an a127, it was used on a large range of vehicles, tdi's, v8, 2.5 petrol etc. occassionally the mounting lugs are opposite but this can be changed, you simply take the through bolts out and rotate the front housing without pulling it apart then replace the through bolts.

Cool will have a look.

Where can I get hold of the correct terminal for the alternator??

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