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3G advice

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ArdWrknTrk

Re: 3G advice

Administrator

You want the big yellow cab wire on the fused side of the fuse block, or attached to the starter relay hot side.

If it's on the alternator output side of the fuse it isn't protected at all.

Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.

ArdWrknTrk

Re: 3G advice

Administrator

So, you don't see this on the test page?

Can you tell me what numbers are on the regulator case?

Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.

Tyler

Re: 3G advice

In reply to this post by ArdWrknTrk

ArdWrknTrk wrote

You want the big yellow cab wire on the fused side of the fuse block, or attached to the starter relay hot side.

If it's on the alternator output side of the fuse it isn't protected at all.

Fixed. Makes sense. That IS what Gary said to do...

1985 F150 4x4 SB 300 I6: Comp 268 cam, '68 240 head, Offy DP, FI manifolds, Holley Sniper 2300, DUI street/strip distributor, BW T-18, Tuff Country 4" suspension lift, Yukon Offroad hubs + front and rear Duragrip LSD 3.73 ratio, 33-12.5/15s

Gear Vendors overdrive unit on order.

Oklahoma boy livin in Washington State. Retired submarine MMNCM (Nuclear Machinist's Mate, Master Chief)

Tyler

Re: 3G advice

Right out of the box

Tyler

Re: 3G advice

Tyler

Re: 3G advice

Final of installation. Sniper fuse and relay mounted next to the mega fuse.

ArdWrknTrk

Re: 3G advice

Administrator

In reply to this post by Tyler

Thank you for that.
That's odd! And I'm really sorry if I've steered anyone wrong with my prior posts.

I try to document things, so I'm not leading anyone astray.
I'll have to look up the numbers on your regulator.

Output looks good!
If your engine has the same 3:1 pulley ratio mine does and assuming idle of 600 rpm it looks like you should be able to put out 80+ amps without touching the throttle.
That's definitely more than my 2G was rated for at redline.

Very clean installation!

Anyway, you shouldn't have any problem with the battery going low or the lights you plan to install.

Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.

Rusty_S85

Re: 3G advice

In reply to this post by Tyler

Tyler wrote

Final of installation. Sniper fuse and relay mounted next to the mega fuse.

Looks good. Im thinking of making a bracket off my charcoal canister mounting plate to mount my mega fuse down low. Will help hide it from view and remove a lot of clutter from being up high. Would just have to simply run the wire from the mega fuse up to the solenoid.

Also wish I could run dual V belts on my setup but I will have to live with a single V belt.

On the Sniper wiring, I am trying to get in touch with Holley to see what kind of pins they use in their harness, I want to depin the connector and make my own harness using a relay/fuse box I am sourcing off the web to contain everything in a nice OE looking housing.

"Old Blue" - '56 Fairlane Town Sedan - 292-4V, Ford-O-Matic transmission, 3.22:1
'63 Belair 2dr sdn - 283-4V, Powerglide transmission, 4.56:1
'78 Cougar XR7 - 351-2V, FMX transmission, 2.75:1 9inch
"Bruno" - '82 F150 Flareside - 302-2V, C6 transmission, 2.75:1 9inch, 31x10.50-15 BFG KO2

Tyler

Re: 3G advice

In reply to this post by ArdWrknTrk

I certainly appreciate all the patience and help from everyone in this group!

On to the ball joints, front brake pads, rotors and springs aaannd....axle pivot bushings.

Tyler

Re: 3G advice

In reply to this post by Rusty_S85

Great ideas!

Gary Lewis

Re: 3G advice

Administrator

Well done! Looks great and is going to put out more at idle that the original alternator ever could at full tilt.

Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

Tyler

Re: 3G advice

I went for a long drive today. When I came home I checked the alternator and it was pretty hot on the back side near the exhaust manifold. I have nothing to compare the temp to. I could barely keep my hand on the wire plug and case. This means it was probably not much over 140F if any.

Have there been any issues with 3G upgrades and overheating the wires? I didn't see any when researching. It was a pretty cool day today so I worry about those 100 degree summer days.

Might look into a heat wrap.

ArdWrknTrk

Re: 3G advice

Administrator

The back is hot because the windings and rectifier board are shedding heat and the fans inside the case are expelling it your the back.
I'm not sure about proximity to the exhaust of a 300.

What wires?
The harness doesn't carry substantial current.
Some foil faced sleeve couldn't hurt.

The cable should be rated for the fuse and the length.
i.e. 175A can use 3' of #2 wire, but not 10' of #2

Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.

Gary Lewis

Re: 3G advice

Administrator

Jim - The back is close to the exhaust manifold, as is the wiring.

Ty - Can you get a shield in between? A simple piece of aluminum half the distance would make a huge difference.

Gary, AKA "Gary fellow": Profile

Gary Lewis

Re: 3G advice

Administrator

Oops - Ty, I tagged you in a new thread I've started about changes to the 3G page. Can you take a look here: http://forum.garysgaragemahal.com/Help-On-3G-Page-td86569.html

Gary, AKA "Gary fellow": Profile

Tyler

Re: 3G advice

In reply to this post by ArdWrknTrk

The regulator and it's plug of wires get pretty hot. I'll just keep an eye on it. Might wrap the manifold if I can or fab a heat shield as Gary suggesed. The back of the alternator is only about 1.5" from the manifold.

ArdWrknTrk

Re: 3G advice

Administrator

In reply to this post by Gary Lewis

Right Gary.
But it's not any closer than every other 300 with EFI manifolds on the planet.

I'm not about to bicker
I'm tired of it

Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.

Tyler

Re: 3G advice

I found an old thread referencing a Motorcraft regulator with a LRC from Ebay. I have one in my cart.

Anything I need to consider before I buy and install into my DB alternator?

Not fond of the squeal...

Gary Lewis

Re: 3G advice

Administrator

I have a 2-second LRC, if I remember correctly, and it solved the squeal problem. I say go for it. And it is a very easy installation.

Gary, AKA "Gary fellow": Profile

ArdWrknTrk

Re: 3G advice

Administrator

In reply to this post by Tyler

Just be aware that the brushes are pinned back so you can get it installed, and that the brushes in your 'old' regulator may hang up or fly free as you remove it.

Remove the shipping pins only after it is secured in place.

Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.

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