Easy 80amp Alternator Upgrade For Vitara 1600 engine.

Got an electrical gremlin? Ask the question here.
Post Reply
User avatar
NylonAdmiral
Winching along now
Winching along now
Posts: 517
Joined: Wed Apr 03, 2013 8:39 pm
Location: Devizes, Wiltshire
Contact:

Easy 80amp Alternator Upgrade For Vitara 1600 engine.

Post by NylonAdmiral » Fri Nov 24, 2017 7:30 pm

I'd recently been looking for an alternator upgrade for the Zuk but couldn't really find very much that offered a decent step up but also bolted in directly. I'd read a few posts about Tranist alternator upgrades but none of them were particularly comprehensive and none listed part numbers etc.

I have a 1600 16v swapped into a Samurai. The stock 1600 alternator is 50a which seemed to just about be able to run the stock electrics but I have fitted electric seats and will probably be looking at additional lighting and a compressor for a locker at some point so needed something more than the stock alternator. When I had the heaters running, the electric seats on, and full beam lit up, the battery would drain quicker than it would charge with the stock unit.

Long story short, I bought or borrowed many different alternators until I could find one that would be a decent step up but that could also be fitted easily. In the end I found a Nissan unit which was a near enough direct fitment but with an 80amp output - 30amps more than the original one.

As I said, I have a 1600 16v, I have no idea if this will fit any other Suzuki engines but next time I look at someones truck I'll make a guess at what other engines it will likely fit.

The plugs on the Suzuki alternator and the Nissan alternator are different in design. I didn't want to cut my loom so I could always throw the stock item back on in an emergency. I bought two plugs and made a little adapter harness. The only other thing you need is a 12mm spacer to space out the bracket on the block to the arm on the altenator. I mahcined one on my lathe but you can just use a stack of washers if you don't have access to a lathe.

Anyway, here are all the parts you need in order to do the 80amp alternator upgrade yourself:

You need this alternator.

You need this plug, and this plug. Cut them together to make a small adaptor harness.

You need a spacer like this or a small stack of washers. My spacer is roughly 20mm in diameter, 12mm thick, and has an 8mm hole through the middle.
20171108_080339.jpg
20171108_080339.jpg (97.96 KiB) Viewed 1646 times
I forgot to note down the correct belt you need but will do that tomorrow and update the post.

That's it. Easy 80amp upgrade.

Caveat: This Nissan alternator is from a CA18DET engine as fitted to things like a 200SX/Silvia etc. The DET suffix on Nissan engines denotes a turbocharged version. There are several other CA18 variants that are not turbocharged. The alternators from these CA engines are completely different and will not fit.

I also suspect that there will be other Nissan engines that may well have suitable donor alternators which will both be higher amperage and fit. I have quite a bit of Nissan stuff so will update this post if I work out other alternators that fit because these ones from the CA18DETs are getting a little rarer.

Here's the finished thing. Works perfectly and has plenty of amperage so far. You can see the small plug adaptor harness in place too.
20171115_095324.jpg
20171115_095324.jpg (195.32 KiB) Viewed 1646 times
1.6 16v, Rock Lobster, PAS, Muddyzook rear disc conversion, coated in Raptor, 33in x 10.5, heated seats, lovingly restored by Scottie!

User avatar
zook123
SCUK Addict
SCUK Addict
Posts: 943
Joined: Sun Apr 20, 2008 10:48 pm
Location: Shepton Mallet

Re: Easy 80amp Alternator Upgrade For Vitara 1600 engine.

Post by zook123 » Sun Nov 26, 2017 6:38 pm

I'm still waiting to see your RB engine in it! ;-) Great guide!
Image
2002 Jimny O2 Ragtop
Safari Snorkel, Freewheeling Hub Conversion
Diff Breathers, G/Box and T/Box Breathers, 2in Suspension Lift
HD Recovery Points and Winch Plate
Kuhmo KL71 MT / Goodyear Wrangler AT


Wessex 4X4 Reponse - WE411
wessex4x4response.org.uk

User avatar
NylonAdmiral
Winching along now
Winching along now
Posts: 517
Joined: Wed Apr 03, 2013 8:39 pm
Location: Devizes, Wiltshire
Contact:

Re: Easy 80amp Alternator Upgrade For Vitara 1600 engine.

Post by NylonAdmiral » Mon Nov 27, 2017 9:54 am

RBZ.jpg
RBZ.jpg (251.94 KiB) Viewed 1612 times
RB has other places to be!
1.6 16v, Rock Lobster, PAS, Muddyzook rear disc conversion, coated in Raptor, 33in x 10.5, heated seats, lovingly restored by Scottie!

Post Reply