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Anyone using a lightweight alternator?

 
Old 06-25-2019, 08:26 AM
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Originally Posted by HarryB View Post
Care to share a bit more info?
well. i mean. the NB starter is a few lbs less than the NA..
not really a big diference. but lightest of the options!.
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Old 06-25-2019, 02:14 PM
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A lightweight alternator would be for weight only, as the load is variable based on the electricity needed. In other words, the alternator spins more freely when less electricity is needed. That said, has anyone underdriven their alternator, or is there a need?
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Old 06-25-2019, 05:40 PM
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Originally Posted by Leafy View Post
You don't even need a heavy alternator to power eps, I ran the volvo pump with both the stock and geo alternator with a tiny model aircraft battery without issue. The geo tracker alternator actually put out more real world amps than stock anyways.
Got data logs of the voltage going to the ignition coils, etc. when the EPS is under heavy load? If that EPS hits 40 amps with some wide and sticky hoosiers the rest of your electrical system (ignition, ABS pump, etc.) won't be too happy about it.
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Old 06-26-2019, 08:23 AM
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Originally Posted by cordycord View Post
A lightweight alternator would be for weight only, as the load is variable based on the electricity needed. In other words, the alternator spins more freely when less electricity is needed. That said, has anyone underdriven their alternator, or is there a need?
Post 49, for starters
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Old 06-26-2019, 09:10 AM
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Originally Posted by cordycord View Post
That said, has anyone underdriven their alternator, or is there a need?
I have to believe if you build it they will come.
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Old 06-26-2019, 11:30 AM
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there was a guy in jacksonville florida. called wayzee pullies or something
use to make pullies. C&C.. small batch.

I would love some aluimnum underdrive pullies. just alt and water pump.. I dont want to get rid of the factory balancer... sorry.
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Old 06-26-2019, 05:23 PM
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Some internetting found this; https://www.ebay.com/i/382676201831?chn=ps

But it replaces the crank pulley, and seemingly deletes the harmonic dampener.
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Old 06-26-2019, 05:39 PM
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Originally Posted by themonkeyman View Post
Some internetting found this; https://www.ebay.com/i/382676201831?chn=ps

But it replaces the crank pulley, and seemingly deletes the harmonic dampener.
You rike deskroy engine? Buy this kit.
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Old 06-26-2019, 06:02 PM
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Originally Posted by sixshooter View Post
You rike deskroy engine? Buy this kit.
Mmmmm yes. Short nose? Long Nose? They'll all die.

Can't tell if the WP or alternator pullies in that kit are oversized at all, kinda looks like not
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Old 06-26-2019, 06:20 PM
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Originally Posted by masterjr33 View Post
there was a guy in jacksonville florida. called wayzee pullies or something
use to make pullies. C&C.. small batch.

I would love some aluimnum underdrive pullies. just alt and water pump.. I dont want to get rid of the factory balancer... sorry.
Isn't the Fluidampr the easy way to do this? Along with the minor benefit of stopping your oil pump from exploding.
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Old 06-26-2019, 06:23 PM
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Originally Posted by Tran View Post
Isn't the Fluidampr the easy way to do this? Along with the minor benefit of stopping your oil pump from exploding.
I believe the Fluidampr is the stock diameter, no underdrive effect.
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Old 06-27-2019, 03:56 PM
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Just bolted on a Powermaster 8178. It's 5.74lbs, as opposed to 10.63lbs for an NA8 alternator. Still need to make a pulley/tensioner setup.


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Old 06-29-2019, 09:13 PM
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Easy button for random lightweight alternators: ultralight end link tensioner. Especially nice with L/R threaded ends.

Prototype Supermiata little volt kit?

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Old 06-30-2019, 08:06 AM
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Tensioner solution looks neat. Is that alternator internally regulated?
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Old 07-05-2019, 12:50 PM
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Ah, you found the expensive and harder to mount version of the susuki alternator.

And yes, many things worked fine on my car. Until I let Chang drive it it was more reliable than an STS car, 2 years no missed runs. Charging system was never an issue. And neither was system voltage.
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Old 07-06-2019, 03:36 PM
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Originally Posted by TNTUBA View Post
I see all this work on small alternators and I have been running a 140 amp FD RX7 unit (which is 2 lbs heavier) in my car for the last 4 seasons.

Guys notice me pleeeaaaaaase!
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