High Output Alternator Recommendation

[ChiefJL]

That’s not necessarily how you’d calculate for alternator size. The amplifiers won’t be drawing anywhere near those peak numbers constantly. Odds are the standard HO alternator would have no problem keeping up. To truly know what your continous draw is you‘d need a meter that will store average amperage over time, which is pretty expensive. The cheap/easy way would be hook everything up and run it at full volume with every accessory running and see if you get any measurable voltage drop. If you don’t, the alternator is keeping up just fine.

Good point, I just went with the simple explanation that is often used in car audio. The actual explanation is that my total component RMS is 3800W, at 13.4V that still requires 283A for the audio. I agree there really is no way to know exactly without hooking it all up and seeing what happens, which I have on my JLUR. I run nearly the same setup on that jeep and prior to getting the Genesis dual battery was in fact having issues. The dual battery helped enough to not make it an issue, but it is not an option for the 392, and I have more “flare” in that rig than I do the JLUR.

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[wicked-warlock]

Good point, I just went with the simple explanation that is often used in car audio. The actual explanation is that my total component RMS is 3800W, at 13.4V that still requires 283A for the audio. I agree there really is no way to know exactly without hooking it all up and seeing what happens, which I have on my JLUR. I run nearly the same setup on that jeep and prior to getting the Genesis dual battery was in fact having issues. The dual battery helped enough to not make it an issue, but it is not an option for the 392, and I have more “flare” in that rig than I do the JLUR.

Good point, I just went with the simple explanation that is often used in car audio. The actual explanation is that my total component RMS is 3800W, at 13.4V that still requires 283A for the audio. I agree there really is no way to know exactly without hooking it all up and seeing what happens, which I have on my JLUR. I run nearly the same setup on that jeep and prior to getting the Genesis dual battery was in fact having issues. The dual battery helped enough to not make it an issue, but it is not an option for the 392, and I have more “flare” in that rig than I do the JLUR.

Well, I just ordered my 2023 392 Unlimited and I'm already too shopping for a bigger alternator. The factory with the tow package won't be enough if I have it my way, lol.

The company I use to like is 4alterstart, but they are out of business.

The other company I like is https://www.powerbastards.com/

But I do not see a 392 option just yet. 160 amps at idle is impressive with 320+ at 1200rpms.

There are not many companies better than that. I'm going to send an email out to them, see if I can get them to make something. I'm sure they will.

Another company is https://www.dcpowerinc.com/collections/high-output-alternators

Someone else mentioned them. I've seen some 200 amp at idle, but nothing for the 392. /cry

Time to start email requests. Someone will come up with one soon enough.

 

[Chance_P]

Dc power and mechman are two reputable brands that I have first hand experience with. No issues with either brand. Loved my mechman 370s I had on my grand cherokee. Made full power at 1100 rpm engine speed.

 

[JLTruman]

Any updates on this? I'm looking at the js for price reasons as it's cheaper than mopar(also upgrade to more powerful alt) and I'm hoping it will get rid of the the bearing failure at the same time. Just noticed the grease line issue this morning and it wasn't there Friday when I gave a coworker a jumpstart. Anyone know how long till it needs to be replaced, I'm gonna do it asap but been busy with work

 

[Bronson90]

Did anyone ever find a 392 ho alternator?

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