924Board.org

MikeDanger · Joined: 21 Nov 2002 Posts: 774 Location: Denver

I thought I read some where about using a smaller lighter more powerful alternator?
I know the 951 guys have fitten some nissan alt.

any info on this?
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It was either this or a giant box of legos

fiat22turbo · Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR

It was a CS-144 GM-style alternator:

http://alternatorparts.com/porsche924turbotodelcoremycs144.html
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

MikeDanger · Joined: 21 Nov 2002 Posts: 774 Location: Denver

no, thats not it, that thing is huge, and im sure not any lighter.
I want a smaller one for more room.
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It was either this or a giant box of legos

fiat22turbo · Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR

So go get one. Just watch up the pulley style and build the mounts. There's no drop in as far as I'm aware.
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

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

SlayerSST · Joined: 21 Sep 2010 Posts: 212

I think OP means he wants to know which smaller alternator would work with the 924.

The ones posted by you guys might be lighter but they are still around the same size/dimensions as the stock alternator.

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

I was responding to the "no drop in replacement" comment.

It's unlikely you'll find a replacement that is both lighter weight AND more powerful. Copper is heavy. Windings, yo!
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erstwhile owner of just about every 924 variant ever made

oharris · Joined: 06 Oct 2014 Posts: 37 Location: Peyton, CO

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

Carrera RSR · Joined: 08 Jan 2010 Posts: 2312 Location: Somerset, UK

That's hardly a smaller/lighter alternator. More impressed if it were coke can sized

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1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252

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

DutchPug · Joined: 27 Jul 2008 Posts: 94 Location: the Netherlands

Here is a 150 amp alternator that is basically drop in. You just need to replace the pulley and make small 10mm bushings inside the mounting points to accept the stock bolts.

http://www.summitracing.com/int/parts/wgl-13779n/overview/year/2001/make/mercedes-benz/model/e55-amg

HOWEVER in my car this particular alternator broke apart internally after only a couple of thousand of kms.

Have now installed this one;
http://www.ebay.de/itm/400903383597?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

Same model alternator just a different brand... and a lot cheaper. So far it has been working fine.

Carrera RSR · Joined: 08 Jan 2010 Posts: 2312 Location: Somerset, UK

Don't need more output, but 100mm diameter and a couple of kilos in weight is more appealing for me. Drop in options too

http://www.autoelectricsupplies.co.uk/product_list/140
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1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252

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

gegge · Joined: 27 Jul 2007 Posts: 1124 Location: Sweden

I use the tiny Nippon-Denso 45A alternator that can be found in Daihatsu cars and forklifts. Enough output for a 924.

Only 5 lbs

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Carl Fredrik Torkildsen

924 turbo -81 Carrera GT RESTOMOD
924 turbo -80 Dolomite De Luxe
924 -85 DP kit, BBS RS, M030 and tuned engine
924s -86 Black on black turbo with Fuchs