How many amps can i safely upgrade my alternator to?

It is a mazda 2.0 liter. Currently has a 70 amp alternator. Need to upgrade it for efficiency reasons. Wondering how many amps I can go up to
I am building an HHO generator and would like it to have 30 amps to be able to run it. Thus i would like to put about a 120 amp alternator on it. Would this be harmful

if you find one rated 120 amps make sure you have the proper voltage regulator for it or ask if it has an internal regulator

This entry was posted on Monday, March 1st, 2010 at 2:37 am and is filed under amps. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

3 Responses to “How many amps can i safely upgrade my alternator to?”

stratoframe on March 1st, 2010 at 7:48 am

Bypass the regulator.
References :
JD M on March 1st, 2010 at 8:05 am

If you can find one, I would say 90 amps should be fine. Usually 90 amp alternators are installed stock into vehicles with power windows and such. The voltage regulator controls how much current flows. Normally the connections are different between alternators of different amperage’s.

Dont bypass the regulator. You will probably over charge and fry the battery. If you are having problems because of a new audio upgrade, go to an audio shop. They have components to solve that problem.
References :
rotor29334 on March 1st, 2010 at 8:33 am

if you find one rated 120 amps make sure you have the proper voltage regulator for it or ask if it has an internal regulator
References :

Acoupower