Mach2

I don't believe rebuilding the alternator from an HHR for more output is an option. Unlike older alternators, the HHRs has an adjustable output. When it senses a low battery condition it can bump the output voltage to charge a battery quicker. This smart charge circuit will limit how much current the alternator can put out.

upzaw2000

Was that a large chain auto shop that did that or bob auto shop around the corner.
Do you recommend any shop to do that kind of work? Sounds pretty risky, but it may not be, its just the first time i have hear something like that.

bigred

I had to put a yellow top battery an 2 1.2 farad caps in to run my system..You can put the extra battery to the left of the stock battery and still have room for your spare tire..It will make a very big differance in the amount of power you have..Still every weekend I put the charger on a slow charge to keep them charged fully..

Snoopy

No it wasn't a chain.. It was one of those places that "specializes" in the electric/electronic components and the rebuilding of alternators, starters, generators (remember them) etc. Most of these type businesses seem to be disappearing, however.

Mach2 posted saying he doesn't believe this can be done because of the type of alternator that is now employed. And, that is probably a good reference.

However, I noticed by your signature, you are in the DFW area. Open the phone book and look for "auto electic". Consult a couple of them for POSSIBLE valid info.

upzaw2000

ok what do you suggest about this, a hyper voltage regulator?
http://store.allcityperformance.com/sunhyvorekit.html

Meat Hook HHR

I am running 4 premier 3000 spl amps and two 3000 watt premier spl subs and a 780 pemier deck, I have to run 4 Yellow top batteries and had to upgrade my alternator to a higher output. Costly but worth it, dang worth it, i shattered my sunroof in comp.

upzaw2000

WOW, where did you get a h/o alternator?

betterof2evils4

DANG!!!!! Got any pics of that setup meathook?

Meat Hook HHR

So SO Sad. After a few good months of happy use from my system, I am here to say don't change your factory alternator, the wiring in the hhr can not handle a 250 amp alternator. My car is now settin in a junk yard some where burnt to s crisp. If you are gonna do a system use capacitors, or install an extra 1 wire alternator ust for your extra batteries. Good news though. Allready startin on the new HHR.

SoCalHHR

The stock HHR alternator is 120a. That coupled with a yellow top or two, should be enough for "most" audio applications.