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formula05 · Joined: 19 Oct 2004 Posts: 32 Location: miami,fl

Does anyone know where i can get a rebuild kit for my 1987 Porsche 924......The works fine except its not giving out charge to the battery....I was going to buy a remanufactured one but i heard theres some kits that let you do it yourself.
thanks...
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1987 Porsche 924

Paul · Posted: Sun May 08, 2005 9:23 am Post subject:

I'd start by replacing the voltage regulator since its mounted on the alternator and also contains the brushes.
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White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

Joes924Racer · Posted: Sun May 08, 2005 10:04 am Post subject:

yea thats all itll take for a 87. I have a rebuild alt and starter place
in town here so id go there. Ive never heard of actual kit.
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1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

gohim · Joined: 02 Nov 2002 Posts: 4459 Location: Rialto, CA

If you are sure that the battery and the wiring is not the problem, I would definitely sart by replacing the voltage regulator.

Of course you can also go directly to a used alternator. They don't seem to be worth much on eBay. $20-$40 tops... I sold my spare on eBay, and it only went for $25. Buying a used alternator alos usually get you the voltage regulator included. Rebuilt and new alternators do not include the voltage regulator.

formula05 · Joined: 19 Oct 2004 Posts: 32 Location: miami,fl

I'll replace the voltage regulator then....What the car does is not charge the battery... So what i did was clean the battery terminals and tighten them. Then i jump the car to see if it would give charge to the battery and didn't. Then i jumped it again and disconnected the battery to see if it was the alternator. The car didn't turn off it just started to run real bad and the rpm's jumped real high to like 3500 to 4000.
thanks
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1987 Porsche 924

gohim · Joined: 02 Nov 2002 Posts: 4459 Location: Rialto, CA

Running the engine without the battery connected will damage the alternator and can damage the car's electronics.

Paul · Posted: Mon May 09, 2005 5:59 am Post subject:

Stop, before you do anything else, put the car back together and hook a voltmeter up to the battery and tell us what it reads when:

The car is not running
The car is running with no loads (all switches off)
The car is running with the heater fan and headlights on.

formula05 · Joined: 19 Oct 2004 Posts: 32 Location: miami,fl

I have a Volt-Ohm-Ammeter is that the same thing as a voltmeter? Sorry i'm new to this. If it is tell me what setting do i put it in to test the battery it has AAC 20 / 200 / 600, VAC 750 / 200, VDC 2 / 200 / 1000 and then it has a symbol that looks like a pair of headphones with 200 / 200k.
thanks
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1987 Porsche 924

gohim · Joined: 02 Nov 2002 Posts: 4459 Location: Rialto, CA

A Voltmeter is used to measure volts.

A VOM (volt ohm miliameter) like you have can be used to measure voltage (ac or dc), ohms (resistance to current flow), or miliamperes (current amps in .001s).

The setting that you want to use to measure dc voltage in/from your car would be VDC 200 on your meter. This scale will read a maximum of 200 volts dc. The car voltages are/should be less than 15 VDC in a heathly electrical system (not including the ignition system where the dc voltage could exceed 50K vdc).