Another Alternator Thread - 1995 D1

RVR OVR

Well-known member
Dec 9, 2004
345
105
IL
To start, my Disco has the older 3.9 and 100amp alternator. I don't think I can put ones on from later model years due to the 100 amp fuse inline - or at least that is what I read in other threads.

I have been reading through old threads with many links broken, some not broken. My alternator has died again, or at least it seems it had. Prior to death, I have been having the flaky tack problem along with a cigarette lighter guage telling me that it charges in low 12's and dips into 11 when stopped at a light, in gear, with lights, radio and fan on. The same guage shows 13+ is other cars so assuming this thing has issues generating the right amount of juice at all times before it finally died.

My belt and pully/tensioner are new in the last year ro two, less than 10k miles, so I know that is not the problem. I don't want a used one from Will again, I have gone through three of those (one replaced under warranty).

So, anyone have a recommendation for a new alternator that is not a chinese built autozone one? I don't need extra power, just want one that will last.

Autozone has a Bosch remanufactured for 318 but it seems like a lot for a reman.

Rovers North has a Proline for 218, but not sure if that is a good brand. https://www.roversnorth.com/parts/ple863_alternator_100_amp_v_8_7_groove_pulley

Lucky 8 has one for 240 and says it is new but does not list a brand - https://lucky8llc.com/collections/discovery-i-alternator/products/alternator

Thoughts? What is the latest go to for replacing an alternator?
 
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LRDONE

Well-known member
Dec 3, 2020
340
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Michigan
Ebay sells a rebuild kit that comes with a new regulator for 40 bucks. I think bearings as well. That's always a cheap option. You can also find the kit at Maniac Electric Motors.
 
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RVR OVR

Well-known member
Dec 9, 2004
345
105
IL
Ebay sells a rebuild kit that comes with a new regulator for 40 bucks. I think bearings as well. That's always a cheap option. You can also find the kit at Maniac Electric Motors.
I just want to slap something on. I have four cars to fix right now to get through. When it rains it pours - literally - one car has backed up sunroof drains that leak into the interior and it is soaked and reeks of mildew, one my kid was driving and got t-boned in an intersection, one that had a valve core threads strip out when airing down that needs a new TPS sensor now, and the Disco is dead in the driveway in need of an alternator. I am doing my very best to resist buying some cheap autozone reman crap to get that back on the road quickly.
 
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RVR OVR

Well-known member
Dec 9, 2004
345
105
IL
OK - I reached out to Will Tillery and he is hooking me up with a new OEM one ike they sell on Atlantic British, only cheaper.. Just going to go that route. Thanks.
 
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StangGT5

Well-known member
Feb 4, 2019
295
131
Atlanta, GA
That's the best way to go. I usually buy Bosch units off Rock Auto for Bosch trucks. They're maybe 1/3 of the price AB wants.

Can't speak for the Gems alternators, but I had good luck recently with an Autozone "gold" alternator for a v-belt 3.9. It got me out of a Saturday pinch and beat waiting on a UPS truck.
 

best4x4

Well-known member
Mar 1, 2015
595
72
Beaumont, TX
You can slap in a Bosch P38 RR Alternator with 1 small modification which can be done 1 of 2 ways. #1 get yourself a Tach from a 96-99 GEMS D1 and simply swap it out in the cluster, or #2 just swap pulleys from the original alternator over to the P38 120AMP unit. I did #1 on my 95 because for some dumb reason the OEM pulley was like 2MM from the upper fan shroud. With the smaller pulley that issue went away.
 
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p m

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Apr 19, 2004
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www.3rj.org
You can slap in a Bosch P38 RR Alternator with 1 small modification which can be done 1 of 2 ways. #1 get yourself a Tach from a 96-99 GEMS D1 and simply swap it out in the cluster, or #2 just swap pulleys from the original alternator over to the P38 120AMP unit. I did #1 on my 95 because for some dumb reason the OEM pulley was like 2MM from the upper fan shroud. With the smaller pulley that issue went away.
That is a bit of a mystery for me.
It's a given that serpentine belt 14CUX trucks have 67mm pulley. But, IIRC, so do GEMS D1s. The 55mm pulleys appeared on nominally 120A GEMS P38A trucks.
Am I wrong?
 
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DiscoClay

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Mar 18, 2021
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Chapel Hill, North Carolina, USA
Side note:

If you use a Chromium based browser (chrome, Brave, etc..) this plugin is a MUST for rover "memorialization duties": the wayback plugin. It lets you easily call the Internet Archive (archive.org) to save a copy of the page you are on... in case it ever goes away.
 

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