1983 Gl1100 interstate front brake line replacement


Information and questions on GL1100 Goldwings (1980-1983)
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danmercer214
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Location: Sanford, MI 48657
Motorcycle: 1983 GL1100 Interstate

1983 Gl1100 interstate front brake line replacement

Post by danmercer214 »



Hi everyone
I’ve rebuilt back caliper and rear master cylinder. I took the front calipers off and after removing all the parts there’s a red jelly substance in the calipers. I’m going to replace the front brake lines. Anyone know of a video I can watch to see how it’s done. I’m a novice mechanic with motorcycles. Worked on many cars and trucks. Would like some guidance on replacing the front brake lines. Rear has been changed. Thank you in advance.
Dan


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LAB3
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Re: 1983 Gl1100 interstate front brake line replacement

Post by LAB3 »

I'm not aware of a tutorial for front brakes but if you where able to do the rear successfully then the front shouldn't be any different. Is there a specific question you have?
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danmercer214
Posts: 30
Joined: Sun Jan 09, 2022 3:50 pm
Location: Sanford, MI 48657
Motorcycle: 1983 GL1100 Interstate

Re: 1983 Gl1100 interstate front brake line replacement

Post by danmercer214 »

Hi,
Thanks for the reply. What I’ve been finding out is they make 4 different styles of front calipers for the 83 gl1100. The kits I’ve ordered had larger pistons than the original. Just having a rough time finding the correct parts. Getting a bit disheartened with this project so far. Back caliper was very easy. Other than that just what I mentioned above. Thanks again for getting back to me.
Take care,
Dan
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WingAdmin
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Re: 1983 Gl1100 interstate front brake line replacement

Post by WingAdmin »

The brakes changed often on the GL1100. There were some front calipers that appeared ONLY on the Aspencade in the 1982 model year, and never used anywhere else, for example.

The brakes for 1983 changed to a linked system, so the brake lines are going to be different than found on an 1982, make sure you get the right ones.

Changing brake lines is relatively easy - the most important thing is the routing. I will typically undo and drain the old ones, then tie or tape the new one to the old one, and pull it through. This ensures the new one is routed exactly the same as the old one.
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LAB3
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Re: 1983 Gl1100 interstate front brake line replacement

Post by LAB3 »

Had the same issue pop up with mine, the caliper seals are different sizes between the right and left sides. Ordered up two sets on eBay while using my phone and found that one side didn't fit after they arrived. As I was trying to sort things out I logged in on a laptop and found an expanded application chart on the exact same ad and sure enough, there it was! Other than that quirk, once I had the proper seals in place it was pretty straight forward in getting the system up and working the way it should.
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bruce swaybill
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1983 honda gl1100i interstate
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Re: 1983 Gl1100 interstate front brake line replacement

Post by bruce swaybill »

The 83 had 25mm pistons on the front right caliper and 32mm on the other two.
(The 82 had 30mm pistons on all three calipers)

The aftermarket suppliers don’t keep the sizes straight but the Honda dealer does.

Good luck with the job.
Bruce S.
Have a nice day! :)
danmercer214
Posts: 30
Joined: Sun Jan 09, 2022 3:50 pm
Location: Sanford, MI 48657
Motorcycle: 1983 GL1100 Interstate

Re: 1983 Gl1100 interstate front brake line replacement

Post by danmercer214 »

Hi,
Someone must have put an 82 caliper on there. It’s 30mm pistons for the one side and 25.4mm on the other. Hoping I bought the correct brake lines which are stainless braided for the 83. I used brakeCrafters.com to find the correct pistons. Anyways thank you for the info. When the weather breaks and I finish getting the rest of the caliper parts I’ll get her back together.
Take care
Dan
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bruce swaybill
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1983 honda gl1100i interstate
2009 triumph bonneville t100

Re: 1983 Gl1100 interstate front brake line replacement

Post by bruce swaybill »

The calipers have the diameter that was machined into the casting stamped on the front side of the caliper, just above the slot for the disc.

It’s possible the original 32 was replaced with a 30mm caliper at some point, perhaps it was just available. When I rebuilt my brakes, which were already de-linked by a previous owner, I swapped the 25mm for an ‘82’s 30mm and replaced the 14mm master cylinder with the ‘82’s 16mm for more capacity/less lever travel.
After almost 40yrs, a lot of “stuff” can happen to these bikes. Someday, someone else will either “enjoy” the improvements I have made or they will curse them….

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Bruce S.
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LAB3
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Re: 1983 Gl1100 interstate front brake line replacement

Post by LAB3 »

If my memory serves it was 33mm, considering how my memory actually works 32mm is plausible. Either way, there's two different sizes left and right.
I'm selling good clean fresh hay. If you want some that's already passed through the horse, that comes a little cheaper!

The best advice on internet motorcycle repair forums comes from posting the wrong answer to your own question.
danmercer214
Posts: 30
Joined: Sun Jan 09, 2022 3:50 pm
Location: Sanford, MI 48657
Motorcycle: 1983 GL1100 Interstate

Re: 1983 Gl1100 interstate front brake line replacement

Post by danmercer214 »

Hi,
Ended up being a caliper from a 1982 gl1100 with 30 mm pistons. So that part is done. Someone used 1/4” long bolts instead of pad hanger pins and the spring pads for both fronts were missing plus I’m going to put the steel braided front brake lines. Still waiting for brake parts to finish that job, then next carbs and after that timing belts and some cleanup.
Thx for the info.
Dan
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