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post #1 of 8 Old 11-22-2009, 03:31 PM Thread Starter
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alternator

how do you change a alternator on a 7.3?

2003 Ford F350 Crewcab 7.3 Powerstroke
mods:
6in. Lift
37x13.50x20 Toyo Open Country M/T
20in. Moto Metal 951's
2 12" Kicker subs
Hifonics amps
Kenwood in-dash
4in. down pipe with 5in.exhaust with 6in. tip.
Soon to come:
Tony wildman chip
afe cold air
2005 front end
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post #2 of 8 Old 11-22-2009, 03:56 PM
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Quote:
Originally Posted by Red_Diesel View Post
how do you change a alternator on a 7.3?
I'm not trying to be a jerk, Red Diesel, but they're pretty self explanatory. Take off your serp belt with a 1/2" breaker bar by inserting it into the fitting on the belt tensioner, unhook the wiring harness, unbolt the alt., & remove. Since you're not replacing your serp belt(right?), you don't have to remove your upper rad hose, just let the serp belt hang, reinstall the new alt.(reverse of removal) & you're set.

"HEAVY" 2001 F-250 XLT 4x4 EC SB:
TW 6pos chip, S&B CAI, Monster 4" exhaust w/ Power Elbow, Big Head WGA, Technicooler, ITP boost fooler, Gen 1 Wicked Wheel, Six-Gun Tuner, Optima Yellow Tops, AutoMeter(Boost, Trans, EGT), CCV mod, MTS TC, MTS valve body, Trans Tech performance rebuild kit, TransGo shift kit, Hornblasters 242 Shocker Train Horns.

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post #3 of 8 Old 11-22-2009, 03:58 PM Thread Starter
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i was just checking because i have never done it before, was just wondering how to loosen the belt. and also should i get a aftermarket alternator since i am running a powerful stereo, 1500 watts.

2003 Ford F350 Crewcab 7.3 Powerstroke
mods:
6in. Lift
37x13.50x20 Toyo Open Country M/T
20in. Moto Metal 951's
2 12" Kicker subs
Hifonics amps
Kenwood in-dash
4in. down pipe with 5in.exhaust with 6in. tip.
Soon to come:
Tony wildman chip
afe cold air
2005 front end

Last edited by Red_Diesel; 11-22-2009 at 04:02 PM.
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post #4 of 8 Old 11-22-2009, 04:02 PM
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Quote:
Originally Posted by Red_Diesel View Post
i was just checking because i have never done it before, was just wondering how to loosen the belt.
If you look @ your tensioner, there's a fitting for a 1/2" ratchet. Use a 1/2" breaker bar with a long handle & I believe you push the bar to the driver's side & the belt will be loose.

"HEAVY" 2001 F-250 XLT 4x4 EC SB:
TW 6pos chip, S&B CAI, Monster 4" exhaust w/ Power Elbow, Big Head WGA, Technicooler, ITP boost fooler, Gen 1 Wicked Wheel, Six-Gun Tuner, Optima Yellow Tops, AutoMeter(Boost, Trans, EGT), CCV mod, MTS TC, MTS valve body, Trans Tech performance rebuild kit, TransGo shift kit, Hornblasters 242 Shocker Train Horns.

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post #5 of 8 Old 11-22-2009, 04:19 PM
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yep cory stated what needs done. are ya getting it rebuilt or putting a new one on?

2006 Ford F250 CCSB FX4 6.0




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1997 F350 CCLB 2WD 7.3
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post #6 of 8 Old 11-22-2009, 04:28 PM Thread Starter
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Putting a new one on, thinking about gettin aftermarket.

2003 Ford F350 Crewcab 7.3 Powerstroke
mods:
6in. Lift
37x13.50x20 Toyo Open Country M/T
20in. Moto Metal 951's
2 12" Kicker subs
Hifonics amps
Kenwood in-dash
4in. down pipe with 5in.exhaust with 6in. tip.
Soon to come:
Tony wildman chip
afe cold air
2005 front end
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post #7 of 8 Old 11-22-2009, 07:11 PM
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You'll be fine with the stock alternator and 1500w. I ran my 3000w system on the stock alternator for a few months before upgrading to a 200a. Still looks like my lights are shutting off at night, only other difference is I don't see a 50RPM drop at idle when the bass hits.

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post #8 of 8 Old 11-22-2009, 07:55 PM
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If you dont have enough of a capacitor in your system, either multiple or one really big one. That is the only way you will ever cure your headlights from dimming. Your stereo pulls a direct draw from wherever its hooked to when it romps them air waves. If you have it running through a capicitor the energy gets stored there and when the bass hits hard it pulls from the cap instead of the power source like a battery. The OE alternators are pretty good on the 7.3 psd's, unless you get a really good deal on aftermarket vs OE then I would say its not needed. I would say spend a hundred bucks or so and buy a nice capacitor so your headlights stop dimmin also You dont need huge wattage to bump, Im runnin a mere 800 with a custom ported box and two p-1s and I hit at 137 DBs according to the guys at the stereo competition a few months back . Its all about sound waves and tuning them to work in harmony with its enviroment! lol stereos are a science in there own!

00 3/4T Ext/Cab SB 4wd

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