Need new alternator

[Winnie]

Hi all, I'm looking to ditch the 2nd alternator and go single set up. My current alternator need repairing, has a dodgy diode in it. I am tossing up whether to repair it or go with a high output job. It's a 93 TD42 with the vacuum pump on it. Is 70A enough? That's what I've got at the moment or should I really be going for a 100A?

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[BigRAWesty]

How much power do you use, and how big are your batteries? Can your batteries handle a 100A output?


Kallen Westbrook
Owner of
Westy's Accessories (http://www.nissanpatrol.com.au/forums/showthread.php?15134-Westy-s-Accessories.-A-small-back-yard-builder.)

[Winnie]

I have a single battery at the moment but will be going dual batteries. Got a 40L Engel and a big 240W LED bar plus HID spotties and headlights.

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[threedogs]

Lights drawing maybe 30-40 amps when all blaring. Engel 4.5- -6 amps on and off.
100 amp would be fine can you do a bosch conversion? ,
I did it on the Toyota saved a fortune on rebuilds
Need to find a bosch with end housings to match,
How about a change over alternator ???

[MC97GQ]

Hey Winnie,

If you are going to fork out the coin for a new alternator and can afford the bigger one and it works fine in your rig, that would be the way I would go, future proofing.

No point putting a new 70 amp in if 12 months down the track you have all the latest and greatest 12volt gizmos in the beast.

After all you may decide you want one of these.

http://www.amazon.co.uk/Volt-Hair-Straighteners-ceramic-plates/dp/B0042NYF3O

12 Volt hair straightener
http://www.nissanpatrol.com.au/forums/images/imported/2013/08/5.jpg
Mark

[Winnie]

Yeah I think going with the big banger is the right thing to do. Patrol apart have them for $475 I will check with the local bloke in town

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[Winnie]

What do people think of this?

http://www.ebay.com.au/itm/HEAVY-DUTY-HIGH-OUTPUT-ALTERNATOR-FIT-NISSAN-PATROL-GQ-GU-4-2L-DIESEL-TD42-/290953595925

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[Winnie]

This is the other option

http://www.patrolapart.com.au/product/starter-motors-alternators/alternator-120amp-suit-nissan-patrol-gqtd42-diesel/

Would I need to upgrade wiring?

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[threedogs]

WoW 120 amps that'd do it, they just need more revs to excite them from memory
You get 5 years warranty on the other, That's what I'd be putting on my ride
5yrs on an alternator go for it most clag out in a few months off road, see what it covers

[BigRAWesty]

Yep I'm with RD, 100A and that's a good price with the vac pump..

Kallen Westbrook
Owner of
Westy's Accessories (http://www.nissanpatrol.com.au/forums/showthread.php?15134-Westy-s-Accessories.-A-small-back-yard-builder.)

[Winnie]

It just seems weird, with the internal fan and all. Will see what Rodney thinks I reckon.

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[nissannewby]

How much power do you use, and how big are your batteries? Can your batteries handle a 100A output?


Kallen Westbrook
Owner of
Westy's Accessories (http://www.nissanpatrol.com.au/forums/showthread.php?15134-Westy-s-Accessories.-A-small-back-yard-builder.)

Battery size doesn't affect alternator choice. An alternator with a higher output will run your accessories while still being able to charge your battery. Petrol alternators generally have a higher output as they have to run a spark ignition system. To small of an alternator and your batteries won't be sufficiently charged while running your accessories resulting in flat batteries.


It just seems weird, with the internal fan and all. Will see what Rodney thinks I reckon.

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Winnie I cringe every time I see your name pop up in the auto elec thread lol. Go the one from patrol apart at least it is more likely to fit without any issues and easier for you being near that area if you need to take it back etc etc.

[Winnie]

I'm thinking that for the same reason mate. Does it make you cringe when I tell you I will change the alternator myself? Haha

Got sick of Motorculture so gone back to Tappa

[nissannewby]

I'm thinking that for the same reason mate. Does it make you cringe when I tell you I will change the alternator myself? Haha

Got sick of Motorculture so gone back to Tappa

Very cringe worthy. Just make sure you have an extinguisher handy when doing so.

[Winnie]

I'll keep your number on speed dial
"mat the car is on fire how do I fix it? "

Got sick of Motorculture so gone back to Tappa

[MudRunnerTD]

I have the Patrolapart 120 on my GQ and very happy.

You want as much as you can get mate if your going to be doing a heap of winching as it sux the life outta it.

120 for sure

[Winnie]

Thanks daz. It's a GQ I won't be doing much winching! Haha ha. Have a look at my twin set up and if you want it I will come over one day and we can do the swap.

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[mudnut]

Five year warranty is a big plus, Winnie. Before buying I would be researching if any forum members have bought from that mob?

[Ben-e-boy]

Thanks daz. I'm soft and wont drive big red, and dont have long arms so I won't be doing much winching! Haha ha. Have a look at my twin set up and if you want it I will come over one day and we can do the swap.

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Sorry it was just there for the taking lmfao

[Yendor]

It just seems weird, with the internal fan and all. Will see what Rodney thinks I reckon.

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Internal fan alternators have been around for ages, that's nothing to worry about.

Both alternators seem similar except for the price.

I think Patrolapart is more likely to look after you if the alternator has problems

[Winnie]

Thanks Rod, Patrolapart have always been good to deal with and I know with them if I order it tomorrow I will have it on Monday so I will order that tomorrow. Got a price off a local bloke of 395 for a 70A one.


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