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sciroccosteve · Joined: 16 Apr 2012 Posts: 215 Location: Rochester, NY

Hey fellas, hows tricks?

Anyways,
I am going to putting a stereo into my car this weekend...(I do car stereo design in my free time for peoples) and something struck me as a possible issue.
A 75amp alternator.

Is there a replacement alternator, I would like to have at the very least 90amp, would prefer 120.

I run amps to everything I do. This car will have 4 5" woofers, 2 in doors(or molded into the wall on the door side) and 2 behind the doors, thats one amp. It will then have 4 tweeters, 2 in dash, 2 above rear seat...another amp. it will then have subs put into the rear, which is another amp.

So, in short: 3 amps, 4 tweeters, 4 woofers, 2 subs. I just dont think 75amp will cut it.
Any ideas? cross reference parts? Something I can do to make my alternator deal well with this much power coming in?
I am hip to ideas, and would love to hear about other stereo setups in the 24's.
_________________
1979 924
2000 V6 Passat
"Let the fools have their tar tar sauce."
C. Montgomery Burns

BionicBalls · Joined: 05 Jan 2009 Posts: 642 Location: Charlotte, NC

There is a 90A alternator available. Other than that, it is going to take a bit of fabricating, but you can install a CS-144 alternator in you car. It has a ton of different amps available all the way up to 350A!

Check out my how-to write up:

http://www.924board.org/viewtopic.php?t=36143
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1980 924 NA
1982 931

leadfoot · Posted: Thu May 10, 2012 6:10 pm Post subject:

assuming your hooking in a farad capacitor for the power soak??
Stu
_________________
1981 ROW 924 Turbo -
carbon fiber GT mish mash
LS1 conversion in progress...

sciroccosteve · Joined: 16 Apr 2012 Posts: 215 Location: Rochester, NY

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

I have a 150A solution that is nearly bolt-in for both NA and 931, but it is not cheap. $245 + $20 drop shipped from the wholesaler. I've been running one in the 941 for a little over a year now with no issues. I also have one in the Club Sport. The only thing that is not 100% bolt-in is that the mounting bosses are made for 10mm bolts rather than the stock 8mm bolts on our cars. You can remedy this by getting a small section (<1 foot is sufficient, but I had to buy a minimum length of 3') of 3/8" ID copper tubing from your local hardware and cutting it to the length of the mounting bosses to use as a home-made bushing.

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