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Date: 13 Dec 2004 15:18:04 GMT
From: Dave Hinz <>
Subject: Re: 99 Turbo update - vroom vroom

On Sun, 12 Dec 2004 22:25:21 +0100, MH <> wrote: >> I still don't have a working alternator for it; can I use one from, >> say, a 96 or Sonett? Those, I have. Otherwise, can I use >> a later Saab 900 alternator, and which should I choose? > > You could use a 95/96/97 alternator but those used in the US only go up to > 35 Amp. Only from 1976 or so did they get a 55 Amp one. Right, looks like I'll fix up one of the two bad ones with the car then. There's a Motorola that doesn't turn (but I'm comfortable rebuilding motors so this shouldn't be bad), and the other one which is I think the Bosch that seems to be missing parts - has the 3-blade connector on the back of it that looks like where a voltage regulator should go. Or, can I put a VR from a 96 onto those, with the right cable? > Both have an > external voltage regulator. You'd be better off using a 99/900: 55, 65 or 70 > Amp and a voltage regulator integrated in the brush holder. If you do not > have many electrical accesories on at the same time (AC, heated seat, heated > rear window, fog lights, spot lights...) 55 Amp is more than sufficient. Let's see. 99 Turbo - manual windows, no AC, not sure about rear window defogger (I think yes), heated seat of course, no fog lights or spotlights. So 55 should be reasonable if that older Bosch just needs a VR. > Also, the 96 one rotates the other way round as a 99/900, so you also have > to swap the cooling fan. One more difference is the double pulley on (some?) > 900 alternators (like my 900T). Good to know. Surprising though, since both are at the 'front' of the engine?!?!? About the Sonett ring & pinion set we were talking about, I looked in the other place I could think of for that ring&pinion, it's not there. The only other one I might have is still in the intact parts sonett, and it won't be coming out of there any time soon I'm afraid. I'll keep an eye out for them, but I wouldn't hold my breath. Dave Hinz

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