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turns out, it's a direct swap. The positive terminal and plug just sit on top of the alternator, but even the bottom alternator bolt is identical to stock. Everything mounts up, no issues, extras wiring, no drama. The pulleys where measured to be within 3 mm difference in diameter.
I've been running a Suzuki Samurai alternator. its rated for 70 amps which is more than a stock 1.6l alternator but its significantly lighter with less rotating mass than a Miata part however. bit of fiddling to get it to fit. pulley is a unorthodox aluminum one for a eclipse I think and I found the right electrical connectors to make an adapter to plug it in directly to the stock NA wiring and since its smaller it needs some customizing of the tensioner. It's been trouble free with a tiny LiFePO4 battery but I don't have AC or radio just a power hungry fuel pump, injectors, and voltage sensitive Hydra.
lol,I take that to mean NOOOO! Anyone see anything wrong with it? If not I plan on running a bigger wire from battery to alternator with maybe a 100A fuse,to eliminate voltage drop when ac and fans come on. And yes I still have the V belt. Be nice to change that though.
Last edited by lvw; 11-02-2016 at 02:33 AM.
Reason: more thoughts
lol,I take that to mean NOOOO! Anyone see anything wrong with it? If not I plan on running a bigger wire from battery to alternator with maybe a 100A fuse,to eliminate voltage drop when ac and fans come on. And yes I still have the V belt. Be nice to change that though.
Just pick up a used water pump pulley and crank pulley. Shouldn't be difficult at all. I suppose the only tricky bit is ensuring they didn't cheap out on the regulator