Alternator Options And Opinions
#21
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there are two different ones, like the miata, there's a slotted belt drive and a v-notch belt drive alternator for the FD and FC respectively.
both need different lower bolts.
1.8 miata:
rx7 (100A)
kia (90A)
1.8 miata (65A)
rx7 (100A)
kia (90A)
'
the kia one looks pretty promising, and can be had for $100 brand new -- no core, and not remanufactured.
FWIW, on these three spec sheets, it says the miata alt is 12.1lbs, rx7 is 12.7lbs, and kia is 13.4lbs.
both need different lower bolts.
1.8 miata:
rx7 (100A)
kia (90A)
1.8 miata (65A)
rx7 (100A)
kia (90A)
'
the kia one looks pretty promising, and can be had for $100 brand new -- no core, and not remanufactured.
FWIW, on these three spec sheets, it says the miata alt is 12.1lbs, rx7 is 12.7lbs, and kia is 13.4lbs.
Last edited by Braineack; 10-31-2016 at 07:15 AM.
#22
From thread: https://www.miataturbo.net/build-thr...2/#post1358144
So in a fit of rage from the final drive fiasco (Do Not buy from MAZMART), I replaced my alternator.
Against conventional wisdom, I got a remanned unit locally for an rx7. Internally regulated, 100Amp.
Car quest 13460A
CARQUEST Alternator - Remanufactured - 100 Amps 13460A: Advance Auto Parts
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.
Against conventional wisdom, I got a remanned unit locally for an rx7. Internally regulated, 100Amp.
Car quest 13460A
CARQUEST Alternator - Remanufactured - 100 Amps 13460A: Advance Auto Parts
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.
#36
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.
#37
anybody ever use one of these? Got one from a guy who sold his car before he ever installed it.
1993-1992 1991 Mazda MX5 Miata 1.6L w/ MT NEW HD 130 HIGH AMP ALTERNATOR
#38
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