Dupli-Tech alternator conversion


Information and questions on GL1200 Goldwings (1984-1987)
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Devil-Doc
Posts: 57
Joined: Thu Oct 06, 2011 7:01 pm
Location: Virginia
Motorcycle: 1982 Honda GL 1100

Dupli-Tech alternator conversion

Postby Devil-Doc » Thu Oct 06, 2011 7:19 pm



Looking at buying a 1984 Aspencade with 64,000 miles, pretty clean and seems well maintained. Current owner has had it about 1.5 years.

No info on previous owners maintenance records. Current owner will sell it to me for $1,800
He hasn't had to do any repairs only routine maintenance like new battery, oil, plugs etc.

Probably has a old alternator/stator on it and I heard the stock ones on the 1200's are notoriously under powered?? Put out only 55 amps when 90-95 is really needed.

Owner hadn't mentioned it being under powered, if it's ok should I get this kit when it comes time to replace it or replace it immediatly after buying the bike in anticipation of it going out?

Timing belt is another concern with a bike with 64,000 miles on it.



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detdrbuzzard
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Location: 42.23/83.33/636
Motorcycle: '84 aspencade,'93se
'75750.'79750/9k
'79 750f.'85450sc
'06 st1300a

Re: Dupli-Tech alternator conversion

Postby detdrbuzzard » Fri Oct 07, 2011 6:43 am

change the timing belts and check the stator. if you don't plan on adding a bunch of lights or useing heated gear don't worry about changing the stator just clean and put some dielectric grease on the connectors
'99 ST1100, '93 se
'75 cb750k, '79 cb 750f, '79 cb750 superK
cb 450sc, sunL70
'06 st1300a
.... william

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Devil-Doc
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Motorcycle: 1982 Honda GL 1100

Re: Dupli-Tech alternator conversion

Postby Devil-Doc » Fri Oct 07, 2011 12:40 pm

How do I check the timing belts? Should I ask him to have the bike checked by Honda before buying?

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detdrbuzzard
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Joined: Thu Oct 23, 2008 5:54 am
Location: 42.23/83.33/636
Motorcycle: '84 aspencade,'93se
'75750.'79750/9k
'79 750f.'85450sc
'06 st1300a

Re: Dupli-Tech alternator conversion

Postby detdrbuzzard » Fri Oct 07, 2011 1:04 pm

if you can't find out how old the timing belts are then change them, just looking at them won't do
'99 ST1100, '93 se
'75 cb750k, '79 cb 750f, '79 cb750 superK
cb 450sc, sunL70
'06 st1300a
.... william

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Devil-Doc
Posts: 57
Joined: Thu Oct 06, 2011 7:01 pm
Location: Virginia
Motorcycle: 1982 Honda GL 1100

Re: Dupli-Tech alternator conversion

Postby Devil-Doc » Fri Oct 07, 2011 2:33 pm

Yea, I'll get right on that being that timing belts are so inexpensive along with Honda service rates.

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WingAdmin
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Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Dupli-Tech alternator conversion

Postby WingAdmin » Fri Oct 07, 2011 3:25 pm

Devil-Doc wrote:Yea, I'll get right on that being that timing belts are so inexpensive along with Honda service rates.


No, seriously. Timing belts are the absolute first thing you should do when you get a new-to-you Goldwing, unless you know they were changed recently.

Timing belts are designed not to stretch, at all. They can't, otherwise the timing of the cylinders would change. For that reason, they don't crack, or show wear like regular serpentine or V-belts like you see in a car. The damage to an old timing belt is entirely inside the belt, to the glass fibers that prevent the belt from stretching. They don't crack or age like you would expect. A timing belt that is about to fail the next time you hit the starter button can look exactly the same as a brand new timing belt that was put on yesterday.

Our Goldwings have interference engines. That means that the valves and the pistons occupy the same space in the cylinder (not at the same time). If a timing belt fails, the valves stop moving while the pistons keep going. Your engine will stop with a very loud bang. Some very bad things happen.

The best that could happen is that you bend or break some valves as the piston hits them. Fixing this involves pulling the head of the affected side and replacing the valves and valve seals on that side of the engine. I can guarantee you that will cost more than replacing the timing belts.

The worst that could happen is that the valves punch holes in the piston(s), spraying metal fragments through the rest of the engine, and destroying your engine. I have a souvenir piston sitting on a shelf in my garage from an engine that this happened to. This also will cost more to fix than replacing the timing belts.

How long will timing belts last? It's anyone's guess. There are a lot of variables. Has the bike sat for a long period of time? That is a quick way to make belts fail. Has it been subjected to a lot of heat, or ridden in a hot environment? That shortens the belt life. Has oil or other contaminants gotten on the belts? Again, this will shorten their life.

Sometimes it's just bad luck. Are you willing to bet the life of the engine in your bike on old belts that may well be the original 20-year old belts that were installed when the bike was manufactured?

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Devil-Doc
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Motorcycle: 1982 Honda GL 1100

Re: Dupli-Tech alternator conversion

Postby Devil-Doc » Fri Oct 07, 2011 5:24 pm

I was being fesicious like my favorite character Dr. Gregory House from House M.D. LOL!!

Should I ask the owner of the bike to change the belt before buying it? What's the labour rate and part cost of changing a belt?

The current owner of this 1984 Aspencade (64,000 miles) has been riding it (and owned it) for 1.5 years and had only needed to replace plugs, air filter, and battery, says it runs fine but did say it sat for 6 years under a tree and was home to some mice when he bought it.

He's in-between jobs and needs to sell it.

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trukr
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Location: sheffield, Illinois
Motorcycle: 1984 gl1200 aspencade

Re: Dupli-Tech alternator conversion

Postby trukr » Sat Oct 08, 2011 12:00 am

Sounds to me like you may want to consider not buying it at all if you are worried about the cost of things that can and will go wrong with an older bike. There are many things that could happen that the previous owner knows nothing about. I bought an 84 aspencade and have had many things that I've had to fix within a short amount of time. There are never any guarantees when buying a used bike. If you buy it also buy a clymers repair manual and do repairs yourself will save you some money.

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Devil-Doc
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Motorcycle: 1982 Honda GL 1100

Re: Dupli-Tech alternator conversion

Postby Devil-Doc » Sat Oct 08, 2011 12:52 am

I don't want to buy a Lemmon!! Nor do I want to buy a bike and not be able to ride it for awhile soon after buying it!!

Buying a bike to save money not sink it into a "money pit"!! Thanks for playing.

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tech1
Posts: 181
Joined: Fri Jun 18, 2010 8:21 pm
Location: East Moline IL
Motorcycle: 1986 Goldwing 1200 SE-i Aspencade
2009 audo comfort
GL1800

Re: Dupli-Tech alternator conversion

Postby tech1 » Sun Oct 16, 2011 10:46 am

Hi First off are you mechanically inclined? Because Yes you have to work on older bikes. Yes you will have to put money into it and parts are harder to find but they are not too hard to work on. If not ask around your area and find a local mechanically inclined freind that might help or do it for you. Second I would FIRST replace the timing belts. I am an auto technition and have found my 86 SEi fairly easy to work on. I work on mine and know it fairly well. it's not a money pit if you can fix it yourself. That is saving you money. And heck it cost only $100 a year to insure! smooth comfortable ride. I guess it's comes to how much you want to pay for a newer bike or less for one with some repairs sooner. they are a piece of mechanical machinery and sooner or later will need repairs AND maintance as with a newer bike. Either way welcome two wheels.
Tech1

pwtuten
Posts: 5
Joined: Thu Mar 17, 2011 4:31 pm
Location: Aurora, MO
Motorcycle: 1984 GL1200 Aspencade

Re: Dupli-Tech alternator conversion

Postby pwtuten » Sat Nov 05, 2011 7:39 am

Thanks for all of the replies here.. I have a 84 Aspy with 81,000 on it. I got it when it had 70,000 this spring, so I have put 11,000 on it this summer and plan to ride it throughout the winter as long as the snow and ice hold off. I do have the maintenance manual for it, so I guess I had better get started looking for timing belts and figure out what it needed to replace them before I have any of those souvenirs. I love my new to me bike and it would break my heart to loose her from my stupidity! Thanks again for all the information this site has!




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