Alternator upgrade
Thread Starter
|
Senior User
Joined: Jan 2004
Posts: 124
Likes: 0
From: nebraska
Alternator upgrade
having troubles with my motorcraft on my 7.3 idi. I am thinking of upgrading to a higher output and or different brand possibly a delco 12si. Has anyone upgraded interested in your thoughts or upgrades.
The Southernmost Mod
Joined: Dec 2004
Posts: 6,902
Likes: 20
From: Caracas, Venezuela
The usual upgrade for these trucks is the 3G alternator, RJM has a great (yet a bit expensive) product. But first you need to find out which model you have under the hood currently.
The Southernmost Mod
Joined: Dec 2004
Posts: 6,902
Likes: 20
From: Caracas, Venezuela
Plug trouble? I haven't had one issue with mine in its 21 years with me. Of course, you'll need to replace the Alternator wiring if you do the swap, but it's cost effective and a great improvement. Just do a search for 3G swap and you'll get plenty of good info on how to do it properly. As for durability, even to this day some Super Duty trucks use it, that's after more than 3 alt. gens later, that should tell you something.
Thread Starter
|
Senior User
Joined: Jan 2004
Posts: 124
Likes: 0
From: nebraska
Yes I was thinking of the 2G for plug trouble my bad. Yes We do have a large electrical load -- bale bed for moving round bales of hay. I would think the load to be similar to a snow plow a greater load but perhaps not as often as a plow would go up/down and angle. With really heave bales the load may be as high as 700 amps a dual battery set up on gas burners was a must with a isolator or ignition would die. High load(700) lifting for appx. 20-30 seconds then light load out(50) then heavy load back in 20-30 (700) so about 1400 amp draw in 1.5 min time calculated by measuring voltage drop on battery then using battery load tester to duplicate voltage drop and reading load. Any thoughts would be appreciated
Trending Topics
The Southernmost Mod
Joined: Dec 2004
Posts: 6,902
Likes: 20
From: Caracas, Venezuela
Do a search for the RJM 3g product, there are 130A to 200A products which should be enough. Personally I think a stock large case 3g should suffice with 130A to 200A. If you need more juice at lower rpm a smaller pulley will do the trick, but you need to research this further, too small and you'll smoke the alt bearings.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Thread
Thread Starter
Forum
Replies
Last Post
TX92F150
1987 - 1996 F150 & Larger F-Series Trucks
25
Sep 9, 2012 03:38 PM