77 GL1 rear end


Information and questions on GL1000 Goldwings (1975-1979)
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Cpowell28570
Posts: 9
Joined: Fri Mar 27, 2015 11:53 am
Location: Newport, North Carolina
Motorcycle: 1982 GL1100, 1981 GL1100A

77 GL1 rear end

Postby Cpowell28570 » Fri Mar 27, 2015 12:03 pm



I have a 77 GL1. I love the spoke rims on it so much more that my mags on my 82 GL1100. I'm not currently in a position to just dissemble both and see if it works. I know the rear end gear boxes are different outer shapes but will the bolting and drive shafts line up?
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82 GL1100 rear
82 GL1100 rear
77 GL1000 rear
77 GL1000 rear



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tom84std
Posts: 493
Joined: Fri Jul 13, 2012 7:40 am
Location: Arlington, Texas
Motorcycle: '84 STD 1200
2002 VTX1800
2007 Shadow 750
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2004 Virago
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Re: 77 GL1 rear end

Postby tom84std » Fri Mar 27, 2015 5:18 pm

Very interesting question and I'm sure someone here knows that answer. I'm sure I'm missing a point, but what about the splined hub itself? I'm wondering if you could just swap out the wheel and leave the gearbox alone. Honda has a history of making similar parts compatible between models. VTX 1800 owners swap their final drive assemblies with VTX 1300 assemblies to take advantage of different gearing and to lower highway RPM. Makes me wonder about any difference in ratio between a 77 and an 82.

goldminerusa
Posts: 245
Joined: Wed Mar 07, 2012 8:20 am
Location: Southern NH, home again!
Motorcycle: 1982 gl 1100standard, 1983 1000c

Re: 77 GL1 rear end

Postby goldminerusa » Sun Mar 29, 2015 7:21 am

I don`t know either, but a quick parts fiche check shows the 1000 case ring and pinion doesn`t have part #`s, the 1100`s do. The part drawings show the cases are substantially different as are the pinion dimensions and the associated bearings, seals and layout, probably to handle additional stress from increased engine output. Again from the fiche, I think there`d be shock mount problems with the 1100 case being larger(longer axle bolt)1100 shock mounts to the case, 1000 mounts to axle bolt. None of this means the laced wheel wont fit the larger case though. But I doubt it because of the larger/stronger case dimensions. I agree the laced rims have more eye appeal.

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Cpowell28570
Posts: 9
Joined: Fri Mar 27, 2015 11:53 am
Location: Newport, North Carolina
Motorcycle: 1982 GL1100, 1981 GL1100A

Re: 77 GL1 rear end

Postby Cpowell28570 » Mon Mar 30, 2015 1:42 pm

Thanks for the input so far guys however I have noticed that the inner splines to the rims will not match up so I'm going to have to use the final drive on the 77 if it lines up to the drive shaft on the 82. I took some pics to try to evaluate. Unfortunately the only pic I could get for the 77 is out of the Clymer manual, but it is a good thing I have that book it's been a God send. And the shocks for the rear drives are at different angles so basically the whole rear would have to move anyways. I noticed a collar on the 82 that uses and O-ring wich isn't a problem because I have access to a metal lathe. The more obtuse angle is no problem because I have a taller set of shocks off a 82 CB 650... If you can't tell I"m a Honda fanatic.
82
82
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