Alternative Higher Amp Alternator (140 amp)

[-=Jeff=-]

When I went to do this on my 1990. I found the case hitting in a couple spots. the Later design Alternator uses a slightly bigger case which causes it to not fit. in my experience..

I would Like to see pictures of the one you installed, maybe when I did it I mised something..

I ended up upgrading my alternator internals and going with LEDs helps

[ZBrink]

Originally Posted by -=Jeff=-

When I went to do this on my 1990. I found the case hitting in a couple spots. the Later design Alternator uses a slightly bigger case which causes it to not fit. in my experience..

I would Like to see pictures of the one you installed, maybe when I did it I mised something..

I ended up upgrading my alternator internals and going with LEDs helps

I edited my original post an added in a photo of the late style CS144 mounted. It fit just fine in my 1990 I'm totally kicking myself for not taking side by side photos though. I've got to get better at photo documenting this stuff to post.

I thought the only difference between the early and late CS144 was the case back where the bearing mounts. The way I understood the readings is that later versions were beefed up and the bearing shows through the case versus sitting inside the case as was on the original versions.

[-=Jeff=-]

Originally Posted by ZBrink

I edited my original post an added in a photo of the late style CS144 mounted. It fit just fine in my 1990 I'm totally kicking myself for not taking side by side photos though. I've got to get better at photo documenting this stuff to post.

I thought the only difference between the early and late CS144 was the case back where the bearing mounts. The way I understood the readings is that later versions were beefed up and the bearing shows through the case versus sitting inside the case as was on the original versions.

yes but also the case surrounds the Stator is thicker and covers more. I found issues when I tried it on my 1990. I ended up beefing up my alternator when I rebuilt it

[secondchance]

Zack,

Higher amp alternator does not require an extensive rewiring. All that's needed is beefing up from alternator to the battery by adding a 8 ga. wire. also, Marc recomended beefing up and additing an extra wiring from the battery (not the actual battery but the distribution block (?) next to the battery to HVAC fan module. Latter allows HVAC fan to run a little faster resulting in air speed increase at the vent.
I am running a custom 200 amp "hair pin" alternator (Nippon Denso internal in CNC housing machined to mimick CS144) and overall C4 ZR-1 is a happier car.
Prior to this, when I had my alternator rebuilt locally, rebuild shop told me they can be rebuilt to 140 amp and I took that option. I think it cost me $65. This was about 6-7 years ago, I think...
https://www.zr1.net/forum/showthread...ght=alternator

[ZBrink]

Originally Posted by secondchance

Zack,

Higher amp alternator does not require an extensive rewiring. All that's needed is beefing up from alternator to the battery by adding a 8 ga. wire. also, Marc recomended beefing up and additing an extra wiring from the battery (not the actual battery but the distribution block (?) next to the battery to HVAC fan module. Latter allows HVAC fan to run a little faster resulting in air speed increase at the vent.
I am running a custom 200 amp "hair pin" alternator (Nippon Denso internal in CNC housing machined to mimick CS144) and overall C4 ZR-1 is a happier car.
Prior to this, when I had my alternator rebuilt locally, rebuild shop told me they can be rebuilt to 140 amp and I took that option. I think it cost me $65. This was about 6-7 years ago, I think...
https://www.zr1.net/forum/showthread...ght=alternator

I found all of my factory wiring looms under the hood to be in good condition, still factory sealed, etc. I decided it wasn't worth it to cut all of them open in order to run the higher gauge wire to the battery and to beef up the fusible links, especially considering I didn't need 200 amps.

My original plan was to build out my OEM alternator to 200 amps myself at home. Once I realized I didn't need 200 amps, I looked at building it out to 140 but with the increased cost on the consumer market for parts, it was only about $25 more to just buy a new 140 amp alternator.