Adapting Rear Master Cylinder from GL1800 to GL1100

cross over parts from other wings, hondas, or any other parts sources that can be used on our wings.

Moderators: robin1731, Rat, Forum Moderators

Post Reply
User avatar
Easter
True Blue Steel Biker
True Blue Steel Biker
Posts: 2999
Joined: Thu Sep 13, 2012 11:33 am
Location: South of Houston 100 miles

Re: Adapting Rear Master Cylinder from GL1800 to GL1100

#31

Post by Easter »

I replaced my brake lines with stainless lines. That gave me banjo fitting on both ends. Just be sure and put the banjo bolt into the master cylinder before bolting up the MC because you will need (probably) to twist your line a bit and that is very hard to do with just the bolt on the end of the line.
Bikes at present:

83 XL 600r with a 2004 XR650L engine
And a slightly worse for the wear BMW GS adventure bike awaiting repair
83 GL in process :IDTS:
dougeferguson
Rusty Probie
Rusty Probie
Posts: 2
Joined: Thu Oct 20, 2016 1:19 pm

Re: Adapting Rear Master Cylinder from GL1800 to GL1100

#32

Post by dougeferguson »

Thanks Easter for your reply,
Did your new hose go then from the master cylinder directly to the rear caliper? (skipping the splitter and delinking the front caliper from the system)
User avatar
Easter
True Blue Steel Biker
True Blue Steel Biker
Posts: 2999
Joined: Thu Sep 13, 2012 11:33 am
Location: South of Houston 100 miles

Re: Adapting Rear Master Cylinder from GL1800 to GL1100

#33

Post by Easter »

Yes, it is a single brake line with banjos on both ends. This is an '80 and did not have linked brakes. But I did de-link my '83.
Bikes at present:

83 XL 600r with a 2004 XR650L engine
And a slightly worse for the wear BMW GS adventure bike awaiting repair
83 GL in process :IDTS:
FrontRunner
Cast Iron Member
Cast Iron Member
Posts: 88
Joined: Sun Jun 03, 2018 10:27 pm
Location: Belmont West Virginia

Re: Adapting Rear Master Cylinder from GL1800 to GL1100

#34

Post by FrontRunner »

This has me wondering if that spare rear brake Master cylinder I have for my 2000 Kawasaki Nomad might also be a viable part for my GL1000. I'll have to look into that in the near future. Unfortunately I'll be working 12 hour nights for the next 3 days and I seem to get nothing done when i am on nights. This might be a good job for my upcoming 2 weeks off. Freedom starts next Tuesday at 6 pm. By freedom I mean my normal 8 day break followed by an additional 4 days vacation and 2 more normally scheduled off days which equals a nice 14 day break.
1978 GL1000 My 1st GL Learning experience
2000 Kawasaki Nomad 1500
User avatar
Bear151556a
Tin Member
Tin Member
Posts: 18
Joined: Fri Aug 28, 2015 11:50 pm
Location: La Crosse WI

Re: Adapting Rear Master Cylinder from GL1800 to GL1100

#35

Post by Bear151556a »

Also, if you want to keep your linked rear brake, russell and Aeroquip make adapters allowing you to put a banjo bolt fitting on a steel line. Just gotta do a google search
1977 Gl1000 Standard---Ran last year, Just needs a battery,carbs might be dirty(yeah right) sold
1983 Gl1100 Interstate--In need of beautification, runs like a dream
1983 Gl1100 Aspencade-Parts for above
1985 Gl1200 Aspencade-Daily ride
User avatar
Easter
True Blue Steel Biker
True Blue Steel Biker
Posts: 2999
Joined: Thu Sep 13, 2012 11:33 am
Location: South of Houston 100 miles

Re: Adapting Rear Master Cylinder from GL1800 to GL1100

#36

Post by Easter »

Bear151556a wrote:Also, if you want to keep your linked rear brake, russell and Aeroquip make adapters allowing you to put a banjo bolt fitting on a steel line. Just gotta do a google search
Actually, all that is required is to remove the brass insert from inside the outlet of the MC. A banjo bolt will thread in but will not go deep enough to seal unless this insert is removed. I have used easy-outs to extract them.

edit---Sorry, my typing got ahead of my reading. Linked brakes will present a different issue. If you decide to keep them be sure the master cylinder is sized to suite both front and back brakes.
Bikes at present:

83 XL 600r with a 2004 XR650L engine
And a slightly worse for the wear BMW GS adventure bike awaiting repair
83 GL in process :IDTS:
Jeffer949
Rusty Probie
Rusty Probie
Posts: 1
Joined: Fri Apr 21, 2023 1:46 pm

Re: Adapting Rear Master Cylinder from GL1800 to GL1100

#37

Post by Jeffer949 »

Hi everyone. I'm a mechanic that for some reason said I would tackle fixing my friends 83 Gl1100's brakes. Lines where completely closed off and the rear M/C was bad. I got new lines but got them for the linked brakes. Then found out how bad my MC was and now im down the line of swapping in the GL1800 MC. It seems its the consensus that you need to un-link your brakes to do this. Well finally found the adapter we need to use the GL1800 master and keep the stock hard line from the MC to the front/rear proportioning valve. It is from www.Belmetric.com Its a M10x1 inverted flare to 10mm banjo. You will only have to slightly bend your hard line up to align everything up. I honestly made an account just to put this info on this thread as most google searches eventually lead to this thread someway or another.

https://belmetric.com/m10x1-0-metric-br ... 1.0DF4.75
User avatar
Sidecar Bob
Honored Life Member
Honored Life Member
Posts: 7631
Joined: Sun Jun 11, 2006 10:14 pm
Location: Kawartha Lakes, Ontario

Re: Adapting Rear Master Cylinder from GL1800 to GL1100

#38

Post by Sidecar Bob »

Sorry for the late reply (I didn't notice this earlier). The 1100's so-called "proportioning valve" is actually just a splitter. The proportioning is accomplished by using calipers with different sized pistons.
Mr. Honda ('83 GL1100/Dnepr) summer How a motorcycle evolves thread
The Famous Eccles ('84 CX650EI/VeloUral) winter Never Ending Build (CX500forum)
Click: Colour schematics for all GL1000 & GL1100 and GL1200 standard models plus instructions on how to download the full size version
"A guy with two sidecars can't be all bad." - Cookie
Another guy with two sidecars..... Hmmmm... must be something to that....
Post Reply
  • Similar Topics
    Replies
    Views
    Last post

Return to “Parts Reference Forum”