GQ Alternator

Submitted: Wednesday, May 03, 2006 at 13:55
ThreadID: 33497 Views:2563 Replies:6 FollowUps:1
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Hi All. I am after a 100 amp or bigger alternator to suit the Mav TB42. I only recently replaced the original one, but with the van on the back, the thermos running and everything else, it's using more than the poor old alt can handle and it 's spat the dummy again. Does anyone know what might fit from other vehicles or new that can be easily converted. I'm sure one of you very knowledgable people has either done this or know someone who has. Looking forward to your reply. Regards, Glenn
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Reply By: Gerry - Wednesday, May 03, 2006 at 14:24

Wednesday, May 03, 2006 at 14:24
Hi Chambo,
For what it's worth, when I had a GQ, I mounted a second alternator directly above the existing one - $30 from the wreckers. There are 2 belts on the existing alternator, one of which I extended and redirected to drive the additional unit. This meant that both belts were still driving the water pump and fan assembly, but only one belt for each of the two alternators. The original alternator simply recharged the main battery, while the second was used exclusively for the auxilliary. I did have a solenoid between the batteries just in case one alternator packed it in, but never needed to use it. You need to manufacture some mounting brackets, but it's not real difficult as there is plenty of room above the existing unit - just make sure it misses the air cleaner by getting a short or compact unit. Mine was only 50 amps but that proved more than adequate. After I did mine, two other club members did the same to their GQ's, each with their own version of brackets. All work very well. Food for thought...
AnswerID: 170442

Reply By: Truckster (Vic) - Wednesday, May 03, 2006 at 15:00

Wednesday, May 03, 2006 at 15:00
search for a thread from AWILL4X4 on this in the archives..
plenty on it.
AnswerID: 170453

Reply By: Brew69(SA) - Wednesday, May 03, 2006 at 15:23

Wednesday, May 03, 2006 at 15:23
I had a Bosch unit made to do the job but its 85amp which is still better than the original 55. Any good auto sparky should be able to make one up for you.
AnswerID: 170459

Reply By: Gu_Patrol - Wednesday, May 03, 2006 at 18:32

Wednesday, May 03, 2006 at 18:32
85 amp alt from a VL Commoodore will fit, after a pulley swap, you could fit a 110 amp/hr from a tojo if your really desperate.
AnswerID: 170498

Reply By: Flash - Thursday, May 04, 2006 at 14:15

Thursday, May 04, 2006 at 14:15
Look at this mob, very competitive and great range, incl oversize for your Mav.
Auto Electrics Australia
Used them for a new alternator a couple of years ago, very happy.
AnswerID: 170635

Reply By: Chambo - Friday, May 05, 2006 at 07:15

Friday, May 05, 2006 at 07:15
Thanks everyone for your input. I have also found out that the alternator off the Nissan Maxima will fit and it comes in 95 and 110 amp. Cheers, Glenn
AnswerID: 170840

Follow Up By: Chambo - Saturday, May 06, 2006 at 18:14

Saturday, May 06, 2006 at 18:14
I fitted the Maxima alternator today and these are the modifications that had to be done. There is a difference bewteen the 95 amd and the 110 amp. The 110 will not fit as the top adjusting lug is in a different position. The 95 is exactly the same as the original GQ even down to the electrical conection. What is different is the shaft on the Maxima is shorter and the spacer on the GQ has to be milled down or as I did, carefully grind it on the side of the bench grinder. The pulleys will then line up perfectly as long as you dont take too much off. The bolt holes are also smaller and they just have to be drilled out. Other than that is was straight forward. Hope this is helpfull to all the GQ/Maverick owners who are a little short in the amp department. Regards, Glenn
FollowupID: 426631

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