Front master cylinder conversion


Information and questions on GL1100 Goldwings (1980-1983)
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1fastgl1100
Posts: 131
Joined: Mon Apr 22, 2013 5:33 pm
Location: Ocala, Florida
Motorcycle: 1983 GL1100A and 1982 GL1100A Modified

Front master cylinder conversion

Postby 1fastgl1100 » Sun Feb 16, 2014 4:55 pm



I want to replace the front brake master cylinder on my 82 gl1100. every time I need to add fluid the screws seem to shear off and have to be drilled out. I have tried all the tricks (soap on ends, anti-seize even plumbers tape) nothing seems to work)
I have been looking at a master cylinder from a Valkyrie. does anyone know if the Valkyrie models had linked brakes or does master cylinder operate both front brakes.



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WingAdmin
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Re: Front master cylinder conversion

Postby WingAdmin » Mon Feb 17, 2014 2:22 pm

The master cylinder has probably corroded (it's aluminum, and corrodes white powder). I would put a few drops of tapping fluid down each screw hole, then use the correct size tap to go down the threads and clean up whatever is causing things to bind up in there.

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1fastgl1100
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Location: Ocala, Florida
Motorcycle: 1983 GL1100A and 1982 GL1100A Modified

Re: Front master cylinder conversion

Postby 1fastgl1100 » Wed Feb 19, 2014 4:26 pm

WingAdmin wrote:The master cylinder has probably corroded (it's aluminum, and corrodes white powder). I would put a few drops of tapping fluid down each screw hole, then use the correct size tap to go down the threads and clean up whatever is causing things to bind up in there.


Tried all that and am sick and tired of dealing with this style master cylinder. I have an adapter for the 7/8" handlebars to accept 1" master cylinder. went and looked at an older Valkerie and sure enough it is a twin disk system. I plan to order a used one and install it and hope to get better performance than I do with the older style.
Some items just need to be upgraded for safety and this is one of those items.

sw3dl1
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1981 GL1100 Interstate
1980 GL1100 Standard
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Re: Front master cylinder conversion

Postby sw3dl1 » Thu Feb 20, 2014 8:11 am

Let us know if that works. I've rebuilt a few of these, but good alternative would be welcome.

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SteveB123
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Re: Front master cylinder conversion

Postby SteveB123 » Thu Feb 20, 2014 8:51 am

Plenty of new 14mm masters on EBay for cheap, slightly smaller piston that will increase caliper pressure, for a given input.
http://www.ebay.com/itm/Front-Hydraulic-Brake-Master-Cylinder-Honda-GL1500-GL1200-GL1100-GL1000-New-/121276196116
Current:82 GL1100 Interstate, 60 Amp Poorboy, MSD coil
Previous: 93 GSX1100F Katana
82 GL500 Silverwing

User avatar
1fastgl1100
Posts: 131
Joined: Mon Apr 22, 2013 5:33 pm
Location: Ocala, Florida
Motorcycle: 1983 GL1100A and 1982 GL1100A Modified

Re: Front master cylinder conversion

Postby 1fastgl1100 » Mon Feb 24, 2014 6:14 am

SteveB123 wrote:Plenty of new 14mm masters on EBay for cheap, slightly smaller piston that will increase caliper pressure, for a given input.
http://www.ebay.com/itm/Front-Hydraulic-Brake-Master-Cylinder-Honda-GL1500-GL1200-GL1100-GL1000-New-/121276196116


actually purchased one of those cheap ebay pieces of $*** and never will again the darn thing wont stop one rotor much less two and I have already rebuilt it once.




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