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planthead
Mad Brick Rider
Joined: 28 Jun 2006
Posts: 127
Location: Bemidji MN, USA
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 Posted: Mon Jun 01, 2009 10:14 pm Post subject: Need Clarification on 50amp Alt Swap |
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Getting ready to swap out my 33amp for a 50amp and have reviewed the info I could find on the net but need some clarification on how to wire the 50 amp.
Can I wire the output straight from the alternator to the starter using my own wire and not the OEM wire?
Can I do the same with the small wire (field something??), or does that have to go somewhere else before it gets the starter. And does the small wire from the bike side connect to the small post next to the the big 8mm post?
My goal is to just leave the OEM wiring bundle alone so I can put the 33amp back in if I sell the bike with out the PIAA's.
The other question I guess I have is how do you know if the rubber bumbers are bad and should be replaced?
Thanks,
Tony
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'93 K1100LT 61k |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Mon Jun 01, 2009 11:55 pm Post subject: |
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Who gives a rip about bringing the bike back to stock? If you sell it just jack the price up by what you paid for the 50A alt and you break even.
Monkey nutz(those rubber bushings): If they look worn then they probably are. Again, if you have to buy new ones then just jack the price up by that amount and break even.
Wiring:
Get a ring terminal and connect the blue wire to the smaller post on the 50A alternator.
Wire a good sized lead (at least 12 gauge) from the positive battery terminal to the larger post on the 50A alternator.
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93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
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Scott_Anderson
Site Admin
Joined: 05 Sep 2006
Posts: 3122
Location: Central Iowa, USA
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| Posted: Tue Jun 02, 2009 5:20 am Post subject: |
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| Flying Duck wrote: | Who gives a rip about bringing the bike back to stock? If you sell it just jack the price up by what you paid for the 50A alt and you break even.
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Agreed. Having taken the alt out of mine to service it and check the "monkey nuts" I can tell you that it aint worth the trouble to put the old one back in for "stock" status.
If you sell and the buyer want's it "that stock" give em the smaller alt and let them change it.
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1995 K1100LT 0302044
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
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"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.)
1997 R1100RT ZC62149(sold) |
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planthead
Mad Brick Rider
Joined: 28 Jun 2006
Posts: 127
Location: Bemidji MN, USA
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| Posted: Tue Jun 02, 2009 9:09 am Post subject: |
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Point taken on the stock issue. Thanks for the wiring help; I would have done it completely bass ackwards.
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Tue Jun 02, 2009 10:33 am Post subject: |
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What 50A alternator are you using? If you're using one from an R bike then you'll need to get the drive cup for the 50A alt on a K. You can't swap in the one from your 32A alt as they are slightly different. About $15 - part number 12312305329
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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planthead
Mad Brick Rider
Joined: 28 Jun 2006
Posts: 127
Location: Bemidji MN, USA
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| Posted: Tue Jun 02, 2009 12:22 pm Post subject: |
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It came with the drive cup attached.
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old guy old bike
Flying Brick Rider
Joined: 18 Jul 2007
Posts: 373
Location: Lisbon, OH
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| Posted: Thu Jan 07, 2010 9:25 pm Post subject: |
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Can you use the alternator from a K1200?
Jeff
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1993 K1100LT
2003 K1200GT Gone but not forgotten
2014 Victory Crossraods |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Fri Jan 08, 2010 2:01 am Post subject: |
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| old guy old bike wrote: | Can you use the alternator from a K1200?
Jeff |
I've wondered the same thing. Why don't you try it and let us know if it works? 
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Fri Jan 08, 2010 2:02 am Post subject: |
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Back to monkey nutz: If they're worn, they'll tell you. (They start to make noise.)
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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Ted
Site Admin
Joined: 03 Apr 2003
Posts: 1117
Location: Further
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| Posted: Fri Jan 08, 2010 12:00 pm Post subject: |
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Monkey nutz are almost always in need of replacing if they are original - they are cheap and easy to replace (as always, spit makes a great lube  ). When I did mine on my K75S some years ago they had the consistency of mud and the fins on the cup were chipped and cracked.
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 Ted
KOG#1 |
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old guy old bike
Flying Brick Rider
Joined: 18 Jul 2007
Posts: 373
Location: Lisbon, OH
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| Posted: Fri Jan 08, 2010 10:56 pm Post subject: |
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Local dealer says he has never done it but sees no reason why an alternator from a k1200 won't work. Guess I will be the tester and pick one up on Fleabay. There are quite a few to choose from and a bunch of them under $50 buy it now.
Jeff
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1993 K1100LT
2003 K1200GT Gone but not forgotten
2014 Victory Crossraods |
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lrome48
Flying Brick Rider
Joined: 30 Jan 2006
Posts: 364
Location: Northridge, SFV,Southern California
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| Posted: Sat Jan 09, 2010 2:34 am Post subject: |
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U | old guy old bike wrote: | Local dealer says he has never done it but sees no reason why an alternator from a k1200 won't work. Guess I will be the tester and pick one up on Fleabay. There are quite a few to choose from and a bunch of them under $50 buy it now.
Jeff |
k
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L
Jeff, the 60amp K1200 alternator will not work. It is physically larger and will not fit the K75/100/1100 intermediate flange.
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Larry
K75
97 K1100 LT Specialk under construction
87 SpecialK75 Carols done!
2004 K12 Special the 'Beast' delivered
K1100 Standard Custom Gone but not forgotten |
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old guy old bike
Flying Brick Rider
Joined: 18 Jul 2007
Posts: 373
Location: Lisbon, OH
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| Posted: Sun Jan 10, 2010 5:57 pm Post subject: |
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Larry,
Thanks for the heads up on the 60A alternator. Would have been money down the drain. Going to scout for a 50A.
Jeff
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1993 K1100LT
2003 K1200GT Gone but not forgotten
2014 Victory Crossraods |
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old guy old bike
Flying Brick Rider
Joined: 18 Jul 2007
Posts: 373
Location: Lisbon, OH
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| Posted: Sat Jan 16, 2010 9:43 pm Post subject: |
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Picked up a 50A from an R bike on Fleabay for $29.99 plus the $15 for the housing. Don't feel to bad about the deal. waiting on the monkey nutz and housing from Chicago BMW.
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1993 K1100LT
2003 K1200GT Gone but not forgotten
2014 Victory Crossraods |
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