Questions on a 78


Information and questions on GL1000 Goldwings (1975-1979)
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yaont2
Posts: 16
Joined: Wed May 18, 2011 12:25 am
Location: Rock Hill, South Carolina
Motorcycle: 1978 GL1000

Questions on a 78

Postby yaont2 » Mon Dec 12, 2011 11:55 pm



Hey guys, thankfully I don't have any ridiculous issues to disect on my 78 currently. I do however, have a questions or 2. I have thoroughly enjoyed my Wing since I bought it in May, mostly done short trips near home, no more than 50 mile radius from home (still making sure all the kinks are fixed). I'm ready to make some nice long trips this spring and summer and am planning on lots of work this winter to make that happen. I'm planning engine oil, trans oil, rear drive oil, grease the splines, change coolant, timing belts, lots of polishing, and new paint.

My big question is, I know these engines are made to run long and hard, but how long/far would be too much at highway speeds? I know that 4500rpm is roughly 65mph. Coming from my background in cars, this is pretty high. What do you guys reccomend?

Once again, I appreciate all your help!



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virgilmobile
Posts: 7645
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Questions on a 78

Postby virgilmobile » Tue Dec 13, 2011 8:27 am

The engine LIKES to run above 3000 rpm.I think it redlines around 8,so your running just half way.You'll run out of gas long before you run out of bike. :)
The last trip on my 78 was from Lincoln Nebraska to the west coast,then up to Washington and across the top,back down through the Dakotas.
It took a week and some 3500 miles.It was summer and HOT.The only thing I would have done different was to run a heavier oil.The 10w30 was a bit light.I should have used 20w50 at least.
Use the appropriate oil for the conditions.
Put in a new thermostat.STANT at autozone
Flush the brake fluid,front and rear
Take the basics for minor repairs,tools,tape,wire etc.

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dingdong
Posts: 2861
Joined: Thu Apr 08, 2010 8:35 am
Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500
2004 NRX1800 Rune

Re: Questions on a 78

Postby dingdong » Tue Dec 13, 2011 10:05 am

+1 on what virgilmobile says. I run my 76 at 80 to 85 mph all the time for extended periods. That is around 5000 to 5500 rpm. She has a sweet spot at 85. Smooth as silk.
I surprised that your rpm is that high at 65mph. My 76 is turning 4200rpm at 70 mph.
Tom

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

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Fred Camper
Posts: 1152
Joined: Sun Aug 16, 2009 9:15 pm
Location: Metro Detroit, MI
Motorcycle: 1977 GL1000, 1976 LTD GL1000

Re: Questions on a 78

Postby Fred Camper » Tue Dec 13, 2011 8:41 pm

I believe I see 4500 @ 70 mph on my 1977 but I do run a 16 inch rear wheel so that makes a difference. But they run cool all day long at that speed, even at 100 Fahrenheit.

Do be sure your belts are positively less than 5 years old. Old belts are a very expensive risk.

yaont2
Posts: 16
Joined: Wed May 18, 2011 12:25 am
Location: Rock Hill, South Carolina
Motorcycle: 1978 GL1000

Re: Questions on a 78

Postby yaont2 » Wed Dec 14, 2011 12:28 am

Thanks for the wisdom guys! I went out and rode some today, nice day in SC at about 60+ degrees out! I did check again on the rpm per speed, and I stand corrected, 4500rpm does equal 70mph or so. Just got to thinking a little more about my winter teardown and clean up a lot more today.

1. My buddy is going to paint the bike for me this winter, he's amazing with an airbrush so I more or less gave him free roam on ideas within colors I would like.

2. I had to replace my stock exhaust this summer due to the collector on the right side busting a weld. I chose to go with HD Road King take offs which sound pretty good. However, I'm still not satisfied with the sound yet (too quiet still) My current idea is to custom fab some 4 into 4 longshots all the way to the back of the rear tire with no baffles..... I'm curious if that will cause me to need to rejet the carbs???

Any ideas?

Thanks again!!!

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dingdong
Posts: 2861
Joined: Thu Apr 08, 2010 8:35 am
Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500
2004 NRX1800 Rune

Re: Questions on a 78

Postby dingdong » Wed Dec 14, 2011 9:21 am

The only things that will need re-jetting are your ears. :lol: ;) If you are planning on any extended trips you might rethink the straight pipes.
Tom

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

yaont2
Posts: 16
Joined: Wed May 18, 2011 12:25 am
Location: Rock Hill, South Carolina
Motorcycle: 1978 GL1000

Re: Questions on a 78

Postby yaont2 » Wed Dec 14, 2011 11:02 am

I thought about that, but then again, i'm young and like the loud obnoxious sound. :lol:

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WingAdmin
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Posts: 17045
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Questions on a 78

Postby WingAdmin » Wed Dec 14, 2011 11:21 am

I used to have a GSX-R750 with a 4-into-1 Vance & Hines exhaust that would make your ears bleed if you didn't wear earplugs. I now love my super-quiet GL1500 that just kinds of gives an electric hum as it goes along. :)




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