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Quote:
Originally Posted by bwmac View Post
Delco is the company that builds electronics for General Motors. You can go to any auto parts store (with your Bosh Alt.) and tell them you want a chev alt with the same mounting placement in 100 amps or more. they will more then likely sell you a standard 110 amp alt.
I was going to rebuild my bosh but now that i see this thread I will do the swap to the chev Alt.
I have done this to many fords and implement equipment before. They are a good replacement.
Theres already a write up on the Delco Swap with nothing but good results. Also, my local 928 buddy did it in his 79 928 with the same great results. I shoulda just followed him, but really wanted to try and make this work.

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1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD**
Old 04-23-2010, 03:30 PM
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Here's a write-up by Rjm65

Porsche 928 Forums dot com - View topic - Delco Alternator Replacement
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1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD**
Old 04-23-2010, 04:23 PM
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Quote:
Originally Posted by MPDano View Post
Theres already a write up on the Delco Swap with nothing but good results. Also, my local 928 buddy did it in his 79 928 with the same great results. I shoulda just followed him, but really wanted to try and make this work.
well I got tired of trying to find a delco that was bigger then the bosch that I took off.
So I bit the bullet and bought the 200amp. just over $700 with shipping. that hurt
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Old 05-13-2010, 08:44 PM
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Quote:
Originally Posted by bwmac View Post
well I got tired of trying to find a delco that was bigger then the bosch that I took off.
So I bit the bullet and bought the 200amp. just over $700 with shipping. that hurt
Maybe you did find one, just paid $700 for it?

Take some nice close up picts of what you get.
Old 05-13-2010, 10:23 PM
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well I got tired of trying to find a delco that was bigger then the bosch that I took off.
So I bit the bullet and bought the 200amp. just over $700 with shipping. that hurt
I sure hope it's made of Unobtanium for that price.
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1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior
1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD**
Old 05-14-2010, 05:07 AM
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I hope his grounds are in good shape.

It would suck to find out that the grounds were bad after spending all that dough.
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Old 05-14-2010, 06:57 PM
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I just bought a Bosch factory rebuilt unit to replace my 86. Its 115A. Cost $257. Got it from Advance Auto, next morning delivery. (would have been less expensive from my normal source, but I needed it in hours). Wife and daughter got stranded in Va Beach. Got a call at night, two of them stuck in stop and go traffic for miles on entrance to a tunnel, with all dash lights flashing --- I knew this was alternator failure and hoped the battery would hold-out long enough. (Nice houses, wish one was ours, will never happen.)

FYI, this is the second time for the dash-flash deal. First time, while flashing, car running, I tapped the old Bosch twice with a hammer and heard it engage & the dash recovered. Bought us about a month. Before replacing this, after driving 3 hours with a load of tools in the other car & with the fresh alternator in a box, I repeated the tap deal with the BFH laying on the driveway --- same result. But it was time to replace, so I did that.

Also note, this alternator actually came from an 85.5 944, we had swapped it a couple years ago during an unrelated electrial witch hunt.




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84,85,86 928 cars

Last edited by Landseer; 05-15-2010 at 03:32 AM..
Old 05-15-2010, 03:16 AM
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I wonder how much trouble it would be to replace the harness?
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Old 05-15-2010, 03:32 AM
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928: Serial Enabler
 
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Why?
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Old 05-15-2010, 03:59 AM
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Originally Posted by Landseer View Post
Why?

28 year old wiring wrapped around a super-hot motor carrying the most intense load of all the circuitry.
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Old 05-15-2010, 05:34 AM
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Quote:
Originally Posted by MPDano View Post
Theres already a write up on the Delco Swap with nothing but good results. Also, my local 928 buddy did it in his 79 928 with the same great results. I shoulda just followed him, but really wanted to try and make this work.
Try one of these 350 amp jobs!



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1986 928S
32 valve engine
All stock, automatic, 539 Weissgold Metallic, 70K original miles, Hankook Ventus 2 tires.
Previously owned: 67 Vette, 427 L88 Stingray, 74 De Tomaso Pantera L. Latest addition: 2000 BMW Z3 Roadster
Old 05-15-2010, 05:37 AM
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Quote:
Originally Posted by Landseer View Post
I just bought a Bosch factory rebuilt unit to replace my 86. Its 115A. Cost $257. Got it from Advance Auto, next morning delivery. (would have been less expensive from my normal source, but I needed it in hours). Wife and daughter got stranded in Va Beach. Got a call at night, two of them stuck in stop and go traffic for miles on entrance to a tunnel, with all dash lights flashing --- I knew this was alternator failure and hoped the battery would hold-out long enough. (Nice houses, wish one was ours, will never happen.)

FYI, this is the second time for the dash-flash deal. First time, while flashing, car running, I tapped the old Bosch twice with a hammer and heard it engage & the dash recovered. Bought us about a month. Before replacing this, after driving 3 hours with a load of tools in the other car & with the fresh alternator in a box, I repeated the tap deal with the BFH laying on the driveway --- same result. But it was time to replace, so I did that.

Also note, this alternator actually came from an 85.5 944, we had swapped it a couple years ago during an unrelated electrial witch hunt.




Dang. I sure wish I had a nice big and flat driveway like yours
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1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior
1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD**
Old 05-15-2010, 08:11 AM
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928: Serial Enabler
 
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This is my daughter's prospective in-laws house.

It was, however, and excellent driveway to work on! Smooth finish, cool, stable.
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Old 05-15-2010, 11:22 AM
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Originally Posted by Landseer View Post
This is my daughter's prospective in-laws house.

It was, however, and excellent driveway to work on! Smooth finish, cool, stable.
Heck, I'll Marry the Guy if your Daughter doesn't

My Sloped Driveway gives my Wife a Heart Attack every time I work under my car on it.
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1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD**
Old 05-15-2010, 11:28 AM
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Originally Posted by MPDano View Post
Heck, I'll Marry the Guy if your Daughter doesn't

My Sloped Driveway gives my Wife a Heart Attack every time I work under my car on it.

Park perpendicular and jack up the low side.
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Old 05-15-2010, 12:12 PM
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928: Serial Enabler
 
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At least its not gravel like mine.
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Last edited by Landseer; 05-15-2010 at 01:54 PM..
Old 05-15-2010, 12:19 PM
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Quote:
Originally Posted by Maleficio View Post
I hope his grounds are in good shape.

It would suck to find out that the grounds were bad after spending all that dough.
Ya Mal that is always in the back of my head, but with half the dash and engine apart waiting for parts, and knowing that a large stereo with 3 - 800 watt amps is on its way, I thought I could use the extra juice. there is no core so I will buy a diode/req/bng kit for the old one, rebuild it and put it on the shelf incase I need a spare sometime.
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Old 05-15-2010, 05:06 PM
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Yep, your gonna need a lot juice for all those amps. Why so much wattage?
Old 05-15-2010, 05:59 PM
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Quote:
Originally Posted by Maleficio View Post
Yep, your gonna need a lot juice for all those amps. Why so much wattage?
There are going to be a lot of deaf, hearing em-pared people around from listening to car stereo's at 189 DB in their cars!

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1986 928S
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Previously owned: 67 Vette, 427 L88 Stingray, 74 De Tomaso Pantera L. Latest addition: 2000 BMW Z3 Roadster
Old 05-16-2010, 04:24 AM
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