Home » Public Forums » GMCnet » Absolute best alternator for a 403?
| Absolute best alternator for a 403? [message #358378] |
Mon, 07 September 2020 15:08  |
6cuda6
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Registered: June 2019
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Guys what is the best alternator you can get for a 403....80 amp? 100 amp, 140 amp? Delco, NAPA, Auto Zone?
Im going to replace mine next week and dont feel like goofing around or reading 2000 thread all over the net.....(not feeling it today, to lazy)
Rich Mondor,
Brockville, ON
77 Hughes 2600
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| Re: Absolute best alternator for a 403? [message #358379 is a reply to message #358378] |
Mon, 07 September 2020 15:15  |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
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6cuda6 wrote on Mon, 07 September 2020 15:08Guys what is the best alternator you can get for a 403....80 amp? 100 amp, 140 amp? Delco, NAPA, Auto Zone?
Im going to replace mine next week and dont feel like goofing around or reading 2000 thread all over the net.....(not feeling it today, to lazy)
The one you have now after you take it to a local reliable rebuilder. Lifetime replacement from the chains is not a deal. You end up with a dead alternator you have to take out and take in to aget the replacement. I’m not the only one here with that opinion.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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| Re: Absolute best alternator for a 403? [message #358380 is a reply to message #358379] |
Mon, 07 September 2020 15:42 |
6cuda6
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Registered: June 2019
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Good point Sir!
midlf wrote on Mon, 07 September 2020 16:156cuda6 wrote on Mon, 07 September 2020 15:08Guys what is the best alternator you can get for a 403....80 amp? 100 amp, 140 amp? Delco, NAPA, Auto Zone?
Im going to replace mine next week and dont feel like goofing around or reading 2000 thread all over the net.....(not feeling it today, to lazy)
The one you have now after you take it to a local reliable rebuilder. Lifetime replacement from the chains is not a deal. You end up with a dead alternator you have to take out and take in to aget the replacement. I’m not the only one here with that opinion.
Rich Mondor,
Brockville, ON
77 Hughes 2600
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| Re: Absolute best alternator for a 403? [message #358382 is a reply to message #358378] |
Mon, 07 September 2020 15:52 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
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I did mine myself. Bearings and brushes. Retained all diodes and Delco regulator because old proven USA parts. All internal connections got cleaned with D5. That way I know it’s done right. Very inexpensive.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: Absolute best alternator for a 403? [message #358383 is a reply to message #358378] |
Mon, 07 September 2020 15:54 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
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6cuda6 wrote on Mon, 07 September 2020 16:08Guys what is the best alternator you can get for a 403....80 amp? 100 amp, 140 amp? Delco, NAPA, Auto Zone?
Im going to replace mine next week and dont feel like goofing around or reading 2000 thread all over the net.....(not feeling it today, to lazy)
Rich,
The stock alternator is a 27SI frame that comes in 2 size (great idea delco). Ours is the smaller size. I believe that some of the later coaches came with 100 amp units. They can be built up to 130 but the frame has to be modified or something I do not recall. If you get offered a larger number physically compare it to what you have because the large version is not a drop in replacement.
If you have the house bank in the rear, it is tough to charge that from the main engine anyway.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: [GMCnet] Absolute best alternator for a 403? [message #358384 is a reply to message #358379] |
Mon, 07 September 2020 15:48 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
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Amen -- get a local rebuilder.
Ken H.
On Mon, Sep 7, 2020 at 4:18 PM Steve Southworth via Gmclist <
gmclist@list.gmcnet.org> wrote:
> 6cuda6 wrote on Mon, 07 September 2020 15:08
>> Guys what is the best alternator you can get for a 403....80 amp? 100
> amp, 140 amp? Delco, NAPA, Auto Zone?
>>
>> Im going to replace mine next week and dont feel like goofing around or
> reading 2000 thread all over the net.....(not feeling it today, to lazy)
>
>
>
> The one you have now after you take it to a local reliable rebuilder.
> Lifetime replacement from the chains is not a deal. You end up with a dead
> alternator you have to take out and take in to aget the replacement. I’m
> not the only one here with that opinion.
> --
> Steve Southworth
> 1974 Glacier TZE064V100150 (for workin on)
> 1975 Transmode TZE365V100394 (parts & spares)
> Palmyra WI
>
> _______________________________________________
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: Absolute best alternator for a 403? [message #358400 is a reply to message #358399] |
Tue, 08 September 2020 04:31 |
6cuda6
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Matt ive done hundreds back in the day but i no longer have access to a "growler" and sometimes people find unique things that work really well in an environment like this (like the new Sanden compressors) so i figured i'd ask before hand.
Matt Colie wrote on Mon, 07 September 2020 23:486cuda6 wrote on Mon, 07 September 2020 17:09I would rather keep the good older stuff and just drop a set of brushes in it etc...its still charging but im sure it could use a refreshning.
Rich,
They are so easy to refresh that you might feel silly.
Matt
Rich Mondor,
Brockville, ON
77 Hughes 2600
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| Re: Absolute best alternator for a 403? [message #358405 is a reply to message #358400] |
Tue, 08 September 2020 08:24 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
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Rich,
Your gray is showing.
A growler was a tool for the armature of generators. You won't need one.
If you just put in brushes, (That takes a special tool to hold them up during assembly) you will be most of the way there.
If you have access to a lathe that can clean up the slip rings, that is nice, but it is not essential.
You may want to replace the front bearing, but those usually just slide off.
Oh, before I forget, that special tool to hold the brushes back? The best I have found is the long plastic snout from a spray can. It goes through the hole under the brushes.
Matt
6cuda6 wrote on Tue, 08 September 2020 05:31Matt ive done hundreds back in the day but i no longer have access to a "growler" and sometimes people find unique things that work really well in an environment like this (like the new Sanden compressors) so i figured I'd ask before hand.
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: Absolute best alternator for a 403? [message #358406 is a reply to message #358378] |
Tue, 08 September 2020 09:15 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
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New brushes come with the “tool”, a single piece of solid wire. But like Matt said the spray straw seems to work best. Rear bearing is a press fit. It can be tapped in and out easily with an appropriate socket. Build a “piece of wood with hole” tool to evenly support the rear housing so the aluminum won’t be distorted.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: [GMCnet] Absolute best alternator for a 403? [message #358413 is a reply to message #358378] |
Tue, 08 September 2020 10:19 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
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My personal choice is the 80 Amp as larger amps tend to put more load
On Mon, Sep 7, 2020 at 1:08 PM 6cuda6--- via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Guys what is the best alternator you can get for a 403....80 amp? 100 amp,
> 140 amp? Delco, NAPA, Auto Zone?
>
> Im going to replace mine next week and dont feel like goofing around or
> reading 2000 thread all over the net.....(not feeling it today, to lazy)
> --
> Rich Mondor,
>
> Brockville, ON
>
> 77 Hughes 2600
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
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jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: Absolute best alternator for a 403? [message #358517 is a reply to message #358378] |
Sat, 12 September 2020 14:02 |
hertfordnc
Messages: 1164
Registered: September 2009
Location: East NC
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Just so i'm clear, any old alternator for a TOronado will work, right? It's like $30 on RockAuto and would probably carry one if i went on a long trip.
Dave & Ellen Silva
Hertford, NC
76 Birchaven, 1-ton and other stuff
Currently planning the Great american Road Trip Summer 2021
It's gonna take a lot of Adderall to get this thing right.
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| Re: Absolute best alternator for a 403? [message #358519 is a reply to message #358517] |
Sat, 12 September 2020 14:45 |
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Matt Colie
Messages: 8547
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Location: S.E. Michigan
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hertfordnc wrote on Sat, 12 September 2020 15:02Just so i'm clear, any old alternator for a TOronado will work, right? It's like $30 on RockAuto and would probably carry one if i went on a long trip.
David,
I just had to look and I am glad I did.....
The RockAuto 30$ number is a 63 Amp and according to the picture is not a 27SI. I think it is a 12SI and mounts differently. Besides, if you have a fully functional coach and the alternator quits, just start the APU and strap across the isolator.
Now Starter, that is one to worry about. A local friends just went out, but fortunately the worst is that he may miss our next lunch gathering and he knows a good local shop to rebuild it. Our starters are specific to the 425 transmission and that have been out of production for 40 years. The dangerous thing about them is that they were really too robust. They keep trying to work when they should have given up. This means that when they finally quit, they are long past quick "get you home" fixes. When they do start to have trouble (take this as serious advice), they behave just like that bad electrical connection in the starter circuit that you have been meaning to look after but she usually cranks for you. Right up until she doesn't.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: [GMCnet] Absolute best alternator for a 403? [message #358521 is a reply to message #358517] |
Sat, 12 September 2020 14:33 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
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No, as the 80 amp unit is larger.
Make sure it is80 amp.
You can always call and ask me fore the right #
On Sat, Sep 12, 2020 at 12:02 PM dave silva via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Just so i'm clear, any old alternator for a TOronado will work, right?
> It's like $30 on RockAuto and would probably carry one if i went on a long
> trip.
>
>
> --
> Dave & Ellen Silva
>
> 1972 Revcon Olds 455, toro drive train. All Stock
>
>
>
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Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: Absolute best alternator for a 403? [message #358524 is a reply to message #358519] |
Sat, 12 September 2020 17:05 |
hertfordnc
Messages: 1164
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Location: East NC
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Matt Colie wrote on Sat, 12 September 2020 14:45
Now Starter, that is one to worry about. A local friends just went out, but fortunately the worst is that he may miss our next lunch gathering and he knows a good local shop to rebuild it.
Matt
Ok, but rock auto has that too for like $35 - olds toronado 72-78
Dave & Ellen Silva
Hertford, NC
76 Birchaven, 1-ton and other stuff
Currently planning the Great american Road Trip Summer 2021
It's gonna take a lot of Adderall to get this thing right.
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| Re: Absolute best alternator for a 403? [message #358536 is a reply to message #358400] |
Sun, 13 September 2020 01:45 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
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I think that you guys are missing the biggest reason for going to the 100 amp alternator. It is not for getting 100 amps out of it, (you seldom need that kind of sustained electrical power) but for the higher amp capability at slow or idle engine speeds. Another thing that also helps improve low / slow speed output is going to a smaller pulley on the alternator. I have both on mine.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: Absolute best alternator for a 403? [message #358538 is a reply to message #358378] |
Sun, 13 September 2020 08:19 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
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Dollar carburetor and electric, Gainesville GA. A bunch of old gray headed farts. One of them's sons is taking over the binniss. He's way younger, I expect we can get old stuff rebuilt as long as he can find or make the parts. Bearing, front bushing, regulator module all up under 30 dollars and easy to install.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: Absolute best alternator for a 403? [message #358541 is a reply to message #358524] |
Sun, 13 September 2020 09:11 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
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Matt Colie wrote on Sat, 12 September 2020 14:45Now Starter, that is one to worry about. A local friends just went out, but fortunately the worst is that he may miss our next lunch gathering and he knows a good local shop to rebuild it.
Matt
hertfordnc wrote on Sat, 12 September 2020 18:05
Ok, but rock auto has that too for like $35 - olds toronado 72-78
David,
Hang on a moment.
Yes, it is 36$us (including an 18$ core), but 4 day shipping is 10$ and 3 day shipping is 31$. And all from who knows where?
So, if you are off in BFE or someplace other than an urban campground and that good old 10MT rolls snake eyes, you could be twiddling your thumbs for a while and listening for the approaching ox-cart. This is why that this is the only heavy spare I carry. We have a 23 and there is no room for things that don't matter.
Only because a faithful Black's List member we were able to get home so Mary could get to work Monday.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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