140amp CS144 Alternator Swap - 1983 928S
#17
Chronic Tool Dropper
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From: Bend, Oregon
I appreciate the feedback and kind words. I will provide an update in a few days when the pulley arrives and I run the B+ wire to the battery terminal. I placed the battery on a tender and it was showing 12.71V this morning when I unplugged it from the tender and car off so the battery seems to be fine.
#19
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From: Bend, Oregon
#20
#24
I was going to swap in a CS 130 (have it sitting on a shelf) but then I drove my 928 through small 6 inch deep rivers that formed in the streets of my neighborhood.
It somehow cleaned the internals and has been working better than ever and I only have light dimming when everything is turned on at idle.
It seems like a good swap to do as CS alternators are cheap and readily available compared to our 928 specific alt.
It somehow cleaned the internals and has been working better than ever and I only have light dimming when everything is turned on at idle.
It seems like a good swap to do as CS alternators are cheap and readily available compared to our 928 specific alt.
#25
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From: Bend, Oregon
I don't recall my Bosch 928 alternator being expensive or hard to find. A call to a supplier, and in a couple days it was on my front porch for about what folks are quoting here for the Delco. I did need to send a core back though. Original wiring attached easily, old pulley fit perfectly, exact fit in the console. Even the cooling shroud fit correctly, although I did need to add the gasket, and swap in the longer original through-bolts on the case for the shroud to attach. Just sayin'...
#26
Didn't Greg Brown recently post that there is a new Bosch alternator available with improved charging for our cars? I was thinking of doing a swap soon, my lights dim when fans are running, window wipers are on, radio on while idling.
I don't know pricing or performance? The GM unit has gotta be cheaper, right? Maybe he can get in on this....
I don't know pricing or performance? The GM unit has gotta be cheaper, right? Maybe he can get in on this....
#27
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From: Bend, Oregon
Challenge for any will be basic initial fit, getting adequte alternator speed for at-idle-speed charging while not having it grenade at engine redline, getting cooling air ducted to it, and having upgraded primary wiring to support the additional current. Guessing that Greg won't show off any uprated units, Bosch or otherwise, until he has a full-package solution to offer.
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I need a basic selectable planetary alternator overdrive unit, one that swaps to a better/faster ratio when engine RPM's are low, then to an under-drive ratio when engine load or RPM's go up. Could be vacuum-operated, in fact, from the same signal that moves the flappy on my S4...
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I need a basic selectable planetary alternator overdrive unit, one that swaps to a better/faster ratio when engine RPM's are low, then to an under-drive ratio when engine load or RPM's go up. Could be vacuum-operated, in fact, from the same signal that moves the flappy on my S4...
#28
"wiring to support the additional current"
A 200A alternator will not deliver 200A, unless you're consuming 200A however..why would the existing wiring not be sufficient for the load the car can present to it?
(Short of a monster stereo install)
I thought our fix idea, is more at idle, and a bit more higher than that.
A 200A alternator will not deliver 200A, unless you're consuming 200A however..why would the existing wiring not be sufficient for the load the car can present to it?
(Short of a monster stereo install)
I thought our fix idea, is more at idle, and a bit more higher than that.
#29
"wiring to support the additional current"
A 200A alternator will not deliver 200A, unless you're consuming 200A however..why would the existing wiring not be sufficient for the load the car can present to it?
(Short of a monster stereo install)
I thought our fix idea, is more at idle, and a bit more higher than that.
A 200A alternator will not deliver 200A, unless you're consuming 200A however..why would the existing wiring not be sufficient for the load the car can present to it?
(Short of a monster stereo install)
I thought our fix idea, is more at idle, and a bit more higher than that.
All most of us need is better generation at idle not more max power.
Alan
#30
I "upgraded" my 928 to a light weight 7 lb 60Amp mini alternator list price $109.95 . required one round 1 1/2 inch spacer for the mounting bolt. Is a single wire self exciting unit....cute little bugger works very well for my 1980 ! But I also upgraded by removing the A/C , radio and seldom drive in the rain....plus still use the belt driven fan to move air through the radiator when I happen to be not moving