Alternator/stator parts list for 93 St1100 help?

Jamjam

Jamjam

Joined
Jun 17, 2019
Messages
31
Age
54
Location
Grass Valley CA
I finally found a shop that will do the upgrade on my bike (current stator dead) but Honda dealer says “no stator is available”. I see people are talking about 40-amp models and a “base plate.” Are these available and what else do I need? Time to get this bike running or say good bye. Thanks in advance!

ps I found this on ebay... Not sure it’ll work and if it’s all I need. Messaged seller.

www.ebay.com

Honda 1995-2003 ST Alternator Assembly 31100-MAJ-G42 New OEM | eBay

Find many great new & used options and get the best deals for Honda 1995-2003 ST Alternator Assembly 31100-MAJ-G42 New OEM at the best online prices at eBay! Free shipping for many products!
www.ebay.com
 
Jamjam said:
mechanic told me it may be advisable to replace rectifier as well in case it caused stator to fail.
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I personally reckon that's unlikely on the ST1100 at this point in it's life. More probable are age related failures (bushings, bearings etc). Maybe the rectifier has been supplying unstable voltages & that lead to the stator death, but the stator has more parts that are prone to age related wear than the rectifier does.

But if you're worried, any auto-electrician should be able to hook the rectifier up to a power source & oscilloscope to check the rectifier functions as intended. Around my area (not in US), the going rate is "a case of beer" for the 20mins it takes.

Or even since you're replacing the stator anyway, crack open the old one, take pics, and garner opinions here (there's a number of electrically qualified folks that grace these halls).

(Caveat, I'm neither a mechanic or an electrician).
 
Go with the 40amp upgrade and pitch the regulator and it's likely burnt up connection. The amount of work is the same, and the 28amp unit may start leaking oil at the wiring exit point, then you are back to square 1.

The process is very well documented and there is even a traveling tool kit with the special tools needed that greatly simplifies the installation.

Check st-riders.net archive of wisdom for more info.
 
You are correct there is a base plate that is needed to upgrade to the 40amp alternator. The alternator is readily available as are all the misc. o-rings and fastener hardware. The base plate is no longer manufactured and is unavailable from mother honda. I did a search on Fleabay and began contacting sellers with complete engines or alternator listings until I found a seller who was willing to pull the plate off the engine he was selling. The engine needs to be '96 or later. Good luck. Item #1
1593117664461.png
 
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ad.hom said:
Heh, I JUST posted on your other thread.

These guys claim they have an 1100 stator in stock, shipping could be pricey though: https://www.carmo.nl/index.php?main_page=product_info&products_id=2680&language=en
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Just to keep this consistent with the other two or three, same-subject threads of Ben’s - this is NOT a replacement 28amp “stator” for Ben’s ST1100.
sirepair said:
I have a 40amp unit, with base plate on a spare engine. Yours for $200 + shipping.
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Now there‘s a sweet deal! You’re a prince, Pat! Ben still need the other parts though. I wonder how long it will be before the shaft is N/A... Anyway, see the link I posted for the parts and tools list, plus my free loaner STOC upgrade tools kit.

John
 
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sirepair said:
I have a 40amp unit, with base plate on a spare engine. Yours for $200 + shipping.
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Sirepair, If he doesn't want it, I'll take your alternator and base plate. I actually only need the base plate as I have a new alternator and everything else that I need to do the upgrade, but if I need to buy them both I will.
 
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John OoSTerhuis said:
Just to keep this consistent with the other two or three, same-subject threads of Ben’s - this NOT a replacement 28amp “stator” for Ben’s ST1100.

Now there‘s a sweet deal! You’re a prince, Pat! Ben still need the other parts though. I wonder how long it will be before the shaft is N/A... Anyway, see the link I posted for the parts and tools list, plus my free loaner STOC upgrade tools kit.

John
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Thanks John, I feel totally out of my element shopping for parts. I contacted Pat for the 40 amp alternator and will have my inop 93 stator for parts. Not clear what additional parts I need to purchase for the mechanic to do the upgrade. You mention a “shaft”—guess that’s not attached to either the stator or the alternator? So confused
 
Jamjam said:
Thanks John, I feel totally out of my element shopping for parts. I contacted Pat for the 40 amp alternator and will have my inop 93 stator for parts. Not clear what additional parts I need to purchase for the mechanic to do the upgrade. You mention a “shaft”—guess that’s not attached to either the stator or the alternator? So confused
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Please read this link I posted for you already, and all the links imbedded therein and ask any questions still remaining after that:

40 Amp Alternator Upgrade - A Two Part Series ! Now With VIDEO !! *

40 Amp Alternator Upgrade - A Two Part Series ! Now With VIDEO !! *
www.st-riders.net
Also, look through the images album I also posted in other thread(s):

Error - ST-Riders Media Gallery

www.st-riders.net www.st-riders.net
Here’s an image from my album showing the two charging system’s parts (28amper - top, 40amper - below):
863D920B-5BD5-466F-BA6E-3913D7657E90.jpeg

This image shows the old and new parts combined that are used during an alt upgrade/conversion:
78E5932E-0EB9-4612-AE36-11C2717E3FBF.jpeg
I’m not sure what more I can do for you right now.

John
 
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John OoSTerhuis said:
Please read this link I posted for you already, and all the links imbedded therein and ask any questions still remaining after that:

40 Amp Alternator Upgrade - A Two Part Series ! Now With VIDEO !! *

40 Amp Alternator Upgrade - A Two Part Series ! Now With VIDEO !! *
www.st-riders.net
Also, look through the images album I also posted in other thread(s):

Error - ST-Riders Media Gallery

www.st-riders.net www.st-riders.net
Here’s an image from my album showing the two charging system’s parts (28amper - top, 40amper - below):
View attachment 257692

This image shows the old and new parts combined that are used during an alt upgrade/conversion:
View attachment 257693
I’m not sure what more I can do for you right now.

John
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Ok thank you John. I will show this to the mechanic and get everything organized for them. Best, Ben
 
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