Topic: Nissan Disc brakes - Question for experts - Test your mechanical Knowlege

[kghost]

Alright all you smart savvy honda fanatic's.......

Nissan Brakes.

The Stock brake piston diameter for CB750F (1977/78) disc brakes is 38.1 mm. This is the piston diameter not the bore on the caliper.

This is identical to the nissan brakes on the 77/78 goldwing.

Now I have a really great set of calipers.....but they are a bigger diameter on the piston. They are 42.8 mm on the piston diameter.

Would be kinda cool to use them as they would have more power but I sure am curious what they came off so I can order a seal.

The brake caliper body is identical to the 750F and the goldwing....only difference is the bigger piston....

Anyone have a clue what they go on?

[scondon]

79-81 750 DOHC bikes have an identical looking caliper. Not sure if the bore is any different though.

[bryanj]

I think the 750/900 twin cam was bigger but the seal is nearly double the cost!

[kghost]

Well after an hr at the Honda shop looking through parts manuals, model types and service manuals I found they are CBX brakes 

CBX has the 42.8 mm piston vs the standard 38 for the supersport.

So...hell I'm gonna install them

The Cafe project rolls along

So far 77 k model frame, 78 SS front forks, CBX front brakes, drilled rotors, 78 SS swing arm and rear disc w/ drilled rotor, Boge shocks, custom aluminum sprocket for a 530 chain, Billet headlight ears, Low ride clip ons, 74 K model engine getting ready to come apart.

The list continues