Kawi2strokes.com Forum

Rebuilt front master cylender changed the top line was clogged and took caipar apart and cleaned and still sticks and front wheel wont spin rotor is good any ideas what it could be?

Tanner at z1 enterprise has brand new after market calipars for z1.I was told you can run them on h1 h2 is this true. Thank you

Clogged lower line?

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If it surges, that's normal, upshift.

Ill check it but i bleed it pump up took all the air out of the line

Likely the small expansion hole in the master cylinder is still blocked. If you remove the cap you see two holes, this is the tiny second hole, try a very small piece of wire in it to clear it. Also, make sure the master cylinder piston is free to return all the way back.

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1974 Kawasaki H2B 750, 1981 Yamaha XV750 Cafe, 1986 Kawasaki KDX200, 2003 Honda XR100, 2004 SDG140. 2006 Ninja 500R Turbo intercooled fuel injected.

Check for corrosion buildup in the caliper piston "o" ring groove. It will hinder free movement of the piston.

This is most likely correct, the hole is very tiny and it's easy to think you have it cleared when it isn't(ask me how I know). You can tell if the piston/pad is sticking by giving the caliper a little smack on the outside with a brass hammer. If it is stuck it will release so at least you can roll it to where you need to work on it.

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1969 H1, 1971 G3SSA, 1974 G5, 1973 H2A, 1975 S3A, 1975 H1F, 1973 Z1, 1988 HD FLTC, Captain America chopper, 2000 Excelsior Henderson, 1965 Bridgestone BS90

Yes, Z1 calipers bolt right up. Z1 brake pipe from caliper to rubber hose differs from H series calipers.

Clogged return hole in the M/C ..... I have drilled them slightly larger with a tiny jet drill bit

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72 H2- 69 H1-73 Z1 -85 RZ350-1986 Ducati F1B -79 Ducati Darmah- 78 Ducati 900GTS-80 DUCATI SSD- 82 Ducati Pantah 600SL- -02 Harley FXD-87 GSXR1100-83 KDX200A1-79GS1000S WES COOLEY

I would caution about doing that, drilling it will leave a small burr under the hole, which is in the master cylinder bore and will kill the seal quickly, also, that hole causes lever sponginess as the very first bit of lever travel squirts fluid back up through it, a bigger hole will let more escape and cause more lever travel. With the master cylinder at rest, riding down the road, that hole is the fluid heat expansion, and pad knockoff (pull back) hole.

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1974 Kawasaki H2B 750, 1981 Yamaha XV750 Cafe, 1986 Kawasaki KDX200, 2003 Honda XR100, 2004 SDG140. 2006 Ninja 500R Turbo intercooled fuel injected.