77 front brakes

[leggman]

I had been noticing that my 77 feels like it weighs a ton when I try to push it around my shop so I checked the front brakes and they were totally locked up. Upon dis assembly I found this.

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I also noticed that one of my pistons was badly pitted and in my opinion not useable.

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I have extra calipers from a 79 that are good but not sure if they can be interchanged?
While I am at it I might as well get braided stainless front hoses.
Any suggestions on caliper rebuild kits or brake hoses out there?
I am thinking about renaming the bike munny pit

[pidjones]

I think Wingovations has pistons. I usually ebay or Amazon the rebuild kits. K&L kits are Ok. Probably need a master cylinder kit while you are at it. The kits for those never have the reservoir o-ring, so I make my own with o-ring cord and superglue.

[delling3]

79 brake calipers are different than 77. They have different offsets. It may be possible to fabricate spacers to make them fit - I am not sure. Someone else can probably chime in. I would look to get some replacement stainless pistons, and a rebuild kit.

[PDub]

I used Brake Crafter's rebuild kits with stainless pistons on my '76. The calipers are waiting to be reinstalled on the bike, but the quality seems very good and I have no reason to think there will be any problems when they are put back in service. Everything went back together well, but I did have a problem with the piston seals.

At first, I couldn't get the piston to go in the cup and as I was reaching for a c-clamp to force it, I caught myself and stopped before I did something stupid to think it through. Took the seal out and flipped it over and it went back together fine. When I did the second caliper, I looked closely at the seal and for the life of me couldn't see a chamfer or anything that would indicate a top or bottom. I figured I had a 50% chance of guessing the right side up but I got it wrong. Flipped it over and everything went together fine.

I'm replacing the original, date coded 1975 hoses with stainless (made a big difference on my Hawk GT) and am rebuilding the masters as well so everything should be like new. After reading Mike Nixon's article about brake fluid, I've decide to go with silicone fluid as well hoping to reduce maintenance.

[scootsx2]

I used Brake Crafter's rebuild kits with stainless pistons on my '76. ...
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The Brake Crafters rebuild kits and pistons are good. I have used them on three bikes. No issues whatsoever.

[bagger13]

I used the Brake Crafters kits on my 78 and replace the lines with stainless lines also replaced the master with one of Randakks updated masters. Stops great now !