05 ford f350 alternators

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=129907
Printed Date: April 29, 2024 at 12:15 AM

Topic: 05 ford f350 alternators

Posted By: biggfe
Subject: 05 ford f350 alternators
Date Posted: December 28, 2011 at 2:20 PM

I got a 05 Ford F350 Daully. Alternator went out and im thinking of replacing it with the higher output one. The standard size alt. is 110 amp.Im thinking of replaceing it with the higher output alt 135 amp. I have two amps one 200 wattts and one 700 watts also 7" dvd screen with navi and siriurs... any thoughts....

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biggfe

Replies:

Posted By: DYohn
Date Posted: December 29, 2011 at 11:44 AM

Higher output is always better, IMO. Make sure you upgrade the big 3 if the OEM wiring can't handle the extra potential.

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Posted By: biggfe
Date Posted: December 29, 2011 at 6:06 PM

All ready did big three.... And installed the new higher output alt today.... Everything is running just fine.... bass seems to hit a little harder.... Thanks

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biggfe

Posted By: oldspark
Date Posted: December 30, 2011 at 12:15 AM

Your amps if RMS Watts (watt else?) mean an extra 90A at full blast.

Not that that means you need a bigger alternator from a battery POV (ie, as long as it charges and discharges within limits so the battery has recharged sufficiently by drive's end), but burp power increases with a bigger alternator.

The latter is demonstrated by your new 135A alternator ie,

biggfe wrote:

bass seems to hit a little harder....

Yes - you have up to 25A extra available, hence at least another ~250W of power before the alternator overloads and the voltage drops from say 14.2V anywhere down to ~12.5V (which may mean at least 20% lower output compared to 14.2V).

Only if high power voltage dips become unwanted is a bigger alternator required.