Good Sam Club Open Roads Forum: Class C Motorhomes: 2021 E450 dual alternator
Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in Class C Motorhomes

Open Roads Forum  >  Class C Motorhomes  >  Class C

 > 2021 E450 dual alternator

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 3  
Next
brianjw

Here and There

Senior Member

Joined: 10/25/2009

View Profile



Posted: 05/21/21 07:47pm Link  |  Quote  |  Print  |  Notify Moderator

Does anyone have this package, or can anyone help with parts? Specifically with the gas 7.3L.

My RV has the single 210 amp alternator, and I’d like to upgrade to a 240/157a dual alternator setup.

Nobody lists an aftermarket setup yet and the dorks at the parts dept were not just unhelpful, but angry that I was asking... Supposedly without a vin number of a unit with dual alternators, they can’t look at parts diagrams and tell me what brackets/idlers/belt etc would be required.

Thanks for the help!

Home Skillet

Pearland Texas

Senior Member

Joined: 10/21/2004

View Profile


Offline
Posted: 05/21/21 08:33pm Link  |  Quote  |  Print  |  Notify Moderator

You can find lots of info here.
You can also contact the Ford Upfitter team on there.

https://www.fordbbas.com/home/


2005 Gulf Stream Conquest 31ft
BigFoot Levelers,TST in tire TPMS,Bilstein Shocks,Trans temp guage,Lowrace iWAY

theoldwizard1

SE MI

Senior Member

Joined: 09/07/2010

View Profile


Offline
Posted: 05/22/21 05:25am Link  |  Quote  |  Print  |  Notify Moderator

Curious. Why do you think you need dual alternators ?

bobndot

USA

Senior Member

Joined: 08/21/2007

View Profile


Offline
Posted: 05/22/21 08:43am Link  |  Quote  |  Print  |  Notify Moderator

Is it a good idea to do this while the brand new rv is still under warranty ?

Dusty R

Charlotte Michigan 48813

Senior Member

Joined: 04/05/2003

View Profile


Offline
Posted: 05/22/21 10:47am Link  |  Quote  |  Print  |  Notify Moderator

theoldwizard1 wrote:

Curious. Why do you think you need dual alternators ?


X-2

KD4UPL

Swoope, VA

Senior Member

Joined: 03/16/2008

View Profile



Good Sam RV Club Member

Offline
Posted: 05/22/21 10:57am Link  |  Quote  |  Print  |  Notify Moderator

What "parts" store were you at? Autozone or Advance are likely clueless. NAPA or Federated would likely be a bit more helpful. The Ford dealer parts department would likely be your best choice.
I too would check with Ford on possible warranty complications.
What are you going to be running with the extra power? 210 amps is huge in the world of automotive alternators.

pnichols

The Other California

Senior Member

Joined: 04/26/2005

View Profile



Good Sam RV Club Member


Posted: 05/22/21 11:16am Link  |  Quote  |  Print  |  Notify Moderator

Let me chime in here with some thoughts:

1. Large and reliable alternators will probably become more important as lithium coach batteries become more common in motorhomes. Supposedly lithium battery banks charge fast - but only if one has a charging method that can deliver the high currents that the batteries will accept. For dry camping - especially when many hours of enough solar aren't available - a large capacity alternator driven by an idling chassis engine might be very useful.

2. Since any vehicle's alternator is very important, having two on board - when one or the other is getting used a lot for high current lithium coach battery charging year after year - to me would be a necessity for equipment backup purposes should one or the other fail when drycamping. Always have a Plan B for critical Plan A failures!

P.S. I think that emergency service vehicles often have dual alternators.


Phil, 2005 E450 Itasca Spirit 24V

brianjw

Here and There

Senior Member

Joined: 10/25/2009

View Profile



Posted: 05/22/21 11:21am Link  |  Quote  |  Print  |  Notify Moderator

It was the Ford dealer parts dept, they’ve historically been awful.

I’m not concerned about warranty, the second alternator wouldn’t be integrated into factory electronics at all. I’ve modified everything I’ve ever owned.

I’m going to run a 400 amp hour lithium battery setup. I want to be able to run the roof top AC off of the Victron inverter while driving (or just quickly recharge the batteries while driving). The plan is to run a 60 amp sterling B2B charger off of each alternator, for a combined 120 amps to the lithium battery bank. I don’t want to overwork/overheat a smaller single alternator asking too much from it, and this seems like the safest way to do it. A little overkill, sure. No, I don’t want to have to rely on the generator while I’m driving. In fact if the solar and alternator perform well enough the generator will come out.

brianjw

Here and There

Senior Member

Joined: 10/25/2009

View Profile



Posted: 05/22/21 11:25am Link  |  Quote  |  Print  |  Notify Moderator

pnichols wrote:

Let me chime in here with some thoughts:

1. Large and reliable alternators will probably become more important as lithium coach batteries become more common in motorhomes. Supposedly lithium battery banks charge fast - but only if one has a charging method that can deliver the high currents that the batteries will accept. For dry camping - especially when many hours of enough solar aren't available - a large capacity alternator driven by an idling chassis engine might be very useful.

2. Since any vehicle's alternator is very important, having two on board - when one or the other is getting used a lot for high current lithium coach battery charging year after year - to me would be a necessity for equipment backup purposes should one or the other fail when drycamping. Always have a Plan B for critical Plan A failures!

P.S. I think that emergency service vehicles often have dual alternators.


Exactly this, thank you. Most ambulances around here are privately owned ragged out rigs. The company I work for has switched to a lot of transits for new rigs (or HD commercial trucks) so I haven’t seen new 7.3L gas ambulances around here yet. Maybe I need to head over to a ford truck forum and see if I can find a VIN that works.

pnichols

The Other California

Senior Member

Joined: 04/26/2005

View Profile



Good Sam RV Club Member


Posted: 05/22/21 11:31am Link  |  Quote  |  Print  |  Notify Moderator

brianjw wrote:

It was the Ford dealer parts dept, they’ve historically been awful.

I’m not concerned about warranty, the second alternator wouldn’t be integrated into factory electronics at all. I’ve modified everything I’ve ever owned.

I’m going to run a 400 amp hour lithium battery setup. I want to be able to run the roof top AC off of the Victron inverter while driving (or just quickly recharge the batteries while driving). The plan is to run a 60 amp sterling B2B charger off of each alternator, for a combined 120 amps to the lithium battery bank. I don’t want to overwork/overheat a smaller single alternator asking too much from it, and this seems like the safest way to do it. A little overkill, sure. No, I don’t want to have to rely on the generator while I’m driving. In fact if the solar and alternator perform well enough the generator will come out.


I regularly charge my E450 motorhome's 230 AH AGM coach battery bank by idling it's V10 to spin the stock 130 amp alternator. Since AGM batteries also charge faster than liquid acid batteries, this idling charge method only takes a relatively short time. HOWEVER - I do wish that I had dual alternators for critical equipment redundancy!

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 3  
Next

Open Roads Forum  >  Class C Motorhomes  >  Class C

 > 2021 E450 dual alternator
Search:   Advanced Search

Search only in Class C Motorhomes


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:




© 2022 CWI, Inc. © 2022 Good Sam Enterprises, LLC. All Rights Reserved.