jake1191

iTrader: (1)

Any one ever put a Renesis alternator on an s4? I need to get an alternator as mine got broken when i had it out to sand blast a few small parts. FD alternators are way too much $$$$ for me right now. What is a good fairly easy/cheap swap?

freemanrx7

I see a lot of people using the s6 alt. I've read on here about people using some kind of ford alt. A mercuary I think but I'm not sure.

workinprogress80

how bout an s5 one? I bet the renesis one puts out alot of power

jake1191

iTrader: (1)

the renesis put out 80 amps. The same as an S5 alternator. I could probably deal with an S5 alternator as my s4 alt handled all my stuff semi-well

Rob XX 7

iTrader: (8)

if the renesis puts out 80 amps then why not just go with a s5 alternator?

are they the same? at least you know the s5 one will fit no problem, what makes a renesis alternator that much cheaper or more appealing to you?
only time I really see the need for more then 80 amps is if your running electric fans in place of your clutch fan, or you have some crazy stereo system

Black Knight RX7 FC3S

iTrader: (7)

a forum member used a ford tempo alternator on his fc.
The ford temp alternator genereates 140 amps I think, and the casting design is almost basically the same as a Fcs alternator, just a little bigger.

Rob XX 7

iTrader: (8)

there are countless threads on alternators, people spend alot of time posting pictures and info so if you look for them they will give you alot of what need to know.

jake1191

iTrader: (1)

i did look and no one has used a Renesis alt.

I would probably use a S5 if it is direct fit? What would i need to mod to make it fit being they must be different

Rob XX 7

iTrader: (8)

again im going to ask whats the attraction to the renesis alternator?

jake1191

iTrader: (1)

i can get one for FREE and it brand new basically

Icemark

Not sure where you are getting that from, as the alternator on my 2006 RX-8 is a 100 amp alt and tests out at about 97 amps at 2000 RPM (which means at freeway speeds, it is probably putting out around 120 - just like a FD alt)

jake1191

iTrader: (1)

that is what all the parts places rate them at(80amps). If they put out 100 then it would be worth it if anyone has done it before. Im not the pioneering type

Rob XX 7

iTrader: (8)

why dont you give it a shot and see how it fits?

Icemark

Hmm, even the factory shop manual rates it at 100, and warn to use a 120 amp test on it when checking it.

Maybe the 04 was rated different, the 04 had a smaller starter and battery than the later models, so it would make sense that the alt would be smaller too on the 04.

farberio

iTrader: (7)

I thought renesis alts were tried but where deemed a no go because they work in conjunction with the renesis ECU.

But I have no real world experiance with them, thats just what I think I read a long *** time ago.

Icemark

They are controlled by a 3 to 8 volt signal from the PCM (ECU). So yes you would have a tough time making one work on a FC without building a controller circuit or changing to an internal regulator.

HOZZMANRX7

iTrader: (43)

IceMark,

Are you getting my PM regarding the HID Ballast?

Icemark

I haven't checked PM's in a couple of days... I get a ton of them now. I'll check them today. Something up?

The Griffin

I've seen two different FD alternators tested at an alt. rebuild shop and they both were stalling at roughly 115 amps. on their test stand when loaded up. I'm not an elect. guy but I'd figure a 100 amp. rated alt. wouldn't last very long putting out a continuous 120 amps even if it could get there.

Icemark

The FD alt is considered a 100 amp alt. It is pretty common however to see 110-120 amps out of them at 3000 RPM, thus some people re-market them as 120 amp alts.

Rob XX 7

iTrader: (8)

seems like alot of unknowns and what ifs, go with something that works, a s5 alternator is fine for your needs, no need to even go FD alternator with a stock clutch fan.

what sort of electronics do you have in the car?

HOZZMANRX7

iTrader: (43)

Actually, going higher amp alternator insures your battery is at it best potential at each start up. How many on this forum have sticky starting issues that occur because of less than full charged batteries.

PS to Icemark. I returned your PM. Key is regarding my HID ballast again.

Rob XX 7

iTrader: (8)

I ran my original S4 alternator in my vert, it was actually THE alternator the car came with, I ran that the whole time I had the car up until last year. My car would sit alot, I did daily drive it for like 4-5 years and I never had any problems. 2 amps in the car as well, a 50x50, and a 3 channel amp that was something like 50x50x200.

A better battery is money well spent, a alternator wont help you on a cold morning to get the car cranking and started.

I would probably still have that alternator in the car, but I swapped motors, the stock S4 alternator is still attached to my motor in another vert I sold someone I know- still going strong as well.

jake1191

iTrader: (1)

i have a 200x2ch amp and a 1100x1x2 in the trunk. For a head unit i have an 8" touch screen double din cd/dvd/nav/etc head unit Plus some fog lights and an H4 conversion.

SirCygnus

iTrader: (1)

sell all that **** and get this thing


http://www.motorcityreman.com/9294tempo23l.html

get the super max 170 amp.