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16-Volt System Users Come In

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Old Nov 3, 2022 | 10:23 AM
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Default 16-Volt System Users Come In

Good morning gents,
Looking at possibly moving to a 16-volt system in my 1999 Camaro SS turbo streetcar.
I know I'll need a 16-volt alternator and battery at minimum but are there any other changes or mods required to the electrical system?
My battery is in the trunk with upgraded, large gauge wire already so that should be fine.
Will the additional voltage affect any of the vehicle controls like the BCM, power windows, gauges, coils etc.?
Not super concerned with weight but more with longevity and cost as while I want to do it right, I don't want to do it often lol.
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Old Nov 4, 2022 | 08:10 AM
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Seems completely pointless
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Old Nov 4, 2022 | 10:22 AM
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Originally Posted by rotary1307cc
Seems completely pointless
I actually found a really good post on Yellowbullet right after posting this that pretty much has me thinking the same thing.
A solid alternator and battery in 12v configuration are fine for what I'm doing.
I would still appreciate your input on why you think that though.
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Old Nov 4, 2022 | 11:07 AM
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Would be much easier to go to a 24 volt system!!


but WHY???
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Old Nov 4, 2022 | 11:20 AM
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Originally Posted by Biebs
Would be much easier to go to a 24 volt system!!


but WHY???
There are definite advantages to moving to a 16-volt system but there are also draw backs.
Weighing the pros and cons is the question.
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Old Nov 5, 2022 | 01:31 AM
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Originally Posted by The ******
Good morning gents,
Looking at possibly moving to a 16-volt system ......................................
Not super concerned with............. longevity and cost.............................................. ............ lol.
.................................................. ...If Cost and reliable transportation are issues, 12 volt system is the correct solution.
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Old Nov 5, 2022 | 04:46 AM
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Originally Posted by Biebs
Would be much easier to go to a 24 volt system!!


but WHY???
but WHY NOT?
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Old Nov 5, 2022 | 08:51 AM
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Originally Posted by The ******
I actually found a really good post on Yellowbullet right after posting this that pretty much has me thinking the same thing.
A solid alternator and battery in 12v configuration are fine for what I'm doing.
I would still appreciate your input on why you think that though.

Because honestly all you are adding is non standard parts, more chances for a heartache/issues for no real benefit

on a 12v system if the components are sized correctly they will support what is desired to be supported and be very reliable doing it


All on reliable easy to source charging components

you tell me what benefit you believe it gives in an actual street car
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Old Nov 5, 2022 | 09:54 AM
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My car has a 14v setup, charges at 16.3v. Probably wasn't worth the money but the fans do bring coolant & trans temps down better/faster.
Still have my 12v setup if anything goes bad. My only reason for switching was wanting the engine to crank faster & it does that.
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Old Nov 5, 2022 | 04:10 PM
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It doesn't make sense until it does lol.

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Old Nov 7, 2022 | 09:51 AM
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Originally Posted by rotary1307cc
Because honestly all you are adding is non standard parts, more chances for a heartache/issues for no real benefit

on a 12v system if the components are sized correctly they will support what is desired to be supported and be very reliable doing it


All on reliable easy to source charging components

you tell me what benefit you believe it gives in an actual street car
Everything seems to run a bit better with the extra voltage, fans, pumps, etc. plus the 16-volt batteries seem to recover from loads faster.
I chased low voltage with my car all summer and will be ordering a JS Racing 320-amp Alternator, so I just wanted to look at the possibility of maybe going 16-volt since I was buying the alternator anyways.
I'm confident the 12-volt JS unit will be more than enough to run all my accessories and provide power at rpm.
I tend to over think things when they are a particular nuisance like dead batteries or AFR gauges shutting off from low voltage lol.
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Old Nov 7, 2022 | 10:00 AM
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Just looked up JS Alternator and they make up to a 400amp Alt for an fbody - had no idea there were car alt's rated for 400amps.

If you get one of the JS alternators please report back on how well it works.
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Old Nov 7, 2022 | 10:21 AM
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Originally Posted by JAYPLUMB
Just looked up JS Alternator and they make up to a 400amp Alt for an fbody - had no idea there were car alt's rated for 400amps.

If you get one of the JS alternators please report back on how well it works.
@jayyyw is running one and gets 14.8 volts up to 8,500 rpm, the guys at JS said I'll get full voltage from idle to 9,000rpm with their overdrive pulley.
The JS guys said a 250-amp unit would probably be fine, but I have an onboard compressor I'd like to get working and maybe add an oil cooler down the road so I'm gonna spring for the Cadillac Escalade 98-04 unit in the 320-amp configuration to be covered, basically the truck alt. with their tweaks.
If you go this route, consider the larger case unit if you have room, the larger case handles to load better and has a little more output at idle according to the JS guys, fitment is the only question.
I will report back in the spring on its performance.
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