shifting and what is the top end of an '83 Interstate


Information and questions on GL1100 Goldwings (1980-1983)
  • Sponsored Links
pschweitzer
Posts: 74
Joined: Mon Jun 10, 2013 6:03 pm
Location: Warrenton, Virginia
Motorcycle: 1983 Goldwing Interstate GL1100I

shifting and what is the top end of an '83 Interstate

Postby pschweitzer » Mon Jun 29, 2015 8:23 pm



After reading some posts about guys riding their old wings up to 75mph I started to wonder if my 83 is performing up to snuff. I do OK at 60 or below (and life is good below 60 by the way), but after that I have to push it to get above and the bike feels like a truck pulling a heavy trailer uphill. 60mph is about 3000 rpm on my tack and in 5th gear.

Also I think this is normal for old wings but shifting is not what I would call smooth. Some could be me, but I clunk into gear and I had better have a bit of revs on coming off a stop or the bike lets me know. It has been running a lot better since I change out the synthetic for straight 10W40 Castrol motorcycle oil.

I am still learning on all things old wings so sorry if these are silly questions.



User avatar
MikeB
Posts: 1226
Joined: Fri Dec 04, 2009 12:54 pm
Location: Tacoma, WA
Motorcycle: 1998 - GL1500 Aspencade.
2003 - GL1800A

Re: shifting and what is the top end of an '83 Interstate

Postby MikeB » Mon Jun 29, 2015 9:41 pm

MikeB
Tacoma, WA, USA

User avatar
Wilcoy02
Posts: 725
Joined: Sun Nov 21, 2010 11:37 pm
Location: Marengo, Ohio
Motorcycle: 1983 GL1100 I purchased 3/16

1983 GL1100I frame with an 80 engine. poor boy installed with C-5 ignition--DIED in Grande Prairie Alberta Canada 8/15


98 valkyrie sold 8/16

Re: shifting and what is the top end of an '83 Interstate

Postby Wilcoy02 » Mon Jun 29, 2015 11:14 pm

No questions are silly except if you don't ask it.

Take 8-10 oz of oil out of the bike and add sea foam to the oil. Ride it for about 100 miles straight and change the oil while it is still warm. The sea foam will loosen up some old crud and your shifting should be better. Replace oil with motorcycle oil for WET CLUTCHES. Best bet to get your engine back up to speed use the Honda oil for the engine.

User avatar
littlebeaver
Posts: 4420
Joined: Mon Sep 21, 2009 6:11 pm
Location: Kansas City, Kansas
Motorcycle: 1981 gl 1100 I , 79 Yamaha XS11
Special, 82 Kawa 750 CSR, 82 Kawa 750 LTD, 03 Kawa Nomad 1500, 99 Kawa Voyager 1200

Re: shifting and what is the top end of an '83 Interstate

Postby littlebeaver » Mon Jun 29, 2015 11:21 pm

My 81 goes up to and probably far past 85 mph wide open, see on my speedometer it only goes up to 85 but after I hit that, it just bounces and I know I am still increasing speed, I'd say well over 100, I don't do this very often but sometimes I wanta haul butt on a straight road :shock: ....Maybe check your float heights as the bike should get up to 80 easily, they may not be set right...Wake that SOB up. :lol: ...Also you may want to do a compression test...

pschweitzer
Posts: 74
Joined: Mon Jun 10, 2013 6:03 pm
Location: Warrenton, Virginia
Motorcycle: 1983 Goldwing Interstate GL1100I

Re: shifting and what is the top end of an '83 Interstate

Postby pschweitzer » Tue Jun 30, 2015 5:47 am

Carbs were rebuilt by Pistol Pete about a year ago and I did a complete top end this winter. Have not done a compression test so that is a good idea. I know I need new pipes as I only patched the seam and weld cracks (and I think the baffles inside are probably shot but that will be next winter's project). I usually run Valvoline for motorcycles (wet clutch) but it is getting hard to find or the auto stores just aren't ordering as much in my area. I'm going to change the rear gear oil as well. I don't know when the last time the PO did this.

User avatar
moneypit
Posts: 145
Joined: Mon Jul 07, 2014 2:43 pm
Location: Grand Haven Mi
Motorcycle: 1983 GL1100I Interstate

Re: shifting and what is the top end of an '83 Interstate

Postby moneypit » Tue Jun 30, 2015 7:02 am

My 83 tops out at 500 mph and I don't even have to shift it shifts on it own.....

User avatar
HawkeyeGL1200
Posts: 918
Joined: Sat Jul 05, 2014 11:53 am
Location: Courtland, Va.
Motorcycle: 1984 GL1200 Interstate
1981 GL1100 Interstate

Re: shifting and what is the top end of an '83 Interstate

Postby HawkeyeGL1200 » Tue Jun 30, 2015 7:43 am

I don't have a 1983 model, but I do have a 81 and a 84... they both shift a little on the clunky side. The 83 model you have and the 84 model have about the same gear ratio in the transmission, from what I understand. Top end is probably 120-125 MPH on them. I've not found a place I feel comfortable running that fast, but I have run in the mid-90's a few times.

The older GL1100's have a slightly different gear ratio and won't go quite as fast on the top end, but will probably do 110-120.. again, never rode mine that fast... the Police don't like it
I am wrong as often as I am right concerning what is wrong with someone else' motorcycle without having seen the machine in person. Guessing with limited information, as to the source of the trouble, is sketchy at best.

pschweitzer
Posts: 74
Joined: Mon Jun 10, 2013 6:03 pm
Location: Warrenton, Virginia
Motorcycle: 1983 Goldwing Interstate GL1100I

Re: shifting and what is the top end of an '83 Interstate

Postby pschweitzer » Tue Jun 30, 2015 5:26 pm

You know I think I'm just a cautious rider and never like to be above 3000rpm for long. That is probably not the way to run this bike. Down shift and I am cruising. Once there, shift into 5th and keep going. I keep riding this like it is a car. I got up to 80mph no issues in 4th but back down quickly. Lee Highway through Warrenton, VA has a lot of cops.

User avatar
bruce swaybill
Posts: 64
Joined: Wed Dec 11, 2013 11:26 pm
Location: farmington, ct
Motorcycle: 1983 gl1100i interstate

Re: shifting and what is the top end of an '83 Interstate

Postby bruce swaybill » Wed Jul 01, 2015 1:10 pm

My '83 Interstate will pull very hard and smooth in fifth gear from 50mph (3000rpm) all the way to the recommended max of 80mph (4800rpm), with accessories (fairing and bags). She likes to rev: just crank that grip - don't be shy. It will cruise nicely below 3000rpm if the carbs are sync'd well. In fact, when it gets rougher/noisier below 3000rpm with a handfull of throttle, that's how I know it needs re-sync'ing.

Above 50mph fourth gear should not be required - ever. If you NEED fourth to accelerate to 80mph, then something is not what it should be. I would check the compression - the spec is 171psi, mine are 164-168psi. Less than 140psi indicates a problem.
Also, check the fuel filter for clogging if she doesn't want to rev willingly with more throttle.
The ignition timimg not reaching full advance will also inhibit higher revs.

My tranny is very clunky. I remember these bikes, actually, all bikes in the early '80s were clunky. Since its origins go back to the mid '70s, no wonder! I also have to be carefull not to find any "false nuetrals" between 3rd, 4th and 5th gear. Probably due to wear - who knows what happened to her before I "rescued" her.

Cherish every ride; you don't know how many rides she has left in her....
Ride Happy!
Have a nice day! :)

pschweitzer
Posts: 74
Joined: Mon Jun 10, 2013 6:03 pm
Location: Warrenton, Virginia
Motorcycle: 1983 Goldwing Interstate GL1100I

Re: shifting and what is the top end of an '83 Interstate

Postby pschweitzer » Wed Jul 01, 2015 5:47 pm

Finished replacing gear oil. Probably got more messy that I should be it's done and very clean now.
I bought a compression tester today from PepBoys and ran a fast check on a warm engine.
1 - 165psi
3 - 160
2 - 150
4 - 145

I'm kind of surprised that the left side is low. It was the better looking side when I did the head work. I'm not going to sweat these numbers unless someone sees something amiss. I ran the bike about 60 miles this afternoon and it ran OK. It doesn't miss. There is a little tap in the valves I think (my hearing is not great with a full face helmet). Since I still consider myself new to these old wings I am going to try and find someone to ride it and see that they think. I also need to replace the pipes one of these days and that could account for these numbers as well.




Return to “GL1100 Information & Questions”




Who is online

Users browsing this forum: No registered users and 2 guests