Spitfire8 Posted October 22, 2010 Share Posted October 22, 2010 I heard that when using silicone fluid, master and wheel cylinder bores should be smooth-finished rather than crosshatched. This apparently prevents the silicone from creeping past the cups. I also suspect the greater lubricity of silicone eliminates the need for crosshatch lubrication of the cups. Anyone had experience with this? Link to comment Share on other sites More sharing options...
1936 D2 Posted October 22, 2010 Share Posted October 22, 2010 I heard that when using silicone fluid, master and wheel cylinder bores should be smooth-finished rather than crosshatched. This apparently prevents the silicone from creeping past the cups. I also suspect the greater lubricity of silicone eliminates the need for crosshatch lubrication of the cups. Anyone had experience with this?When I did the above honing on my cylinders, (both master and wheel), I did it with the technique specified in the honing tool kit - which was the crosshatch style. That is the type I used in the description in post #40.I do think it would be better to use the smooth-finished style though. It just sounds like it would seal better. It would be VERY hard to do well though compared to the crosshatched version. Link to comment Share on other sites More sharing options...
Guest Silverghost Posted October 22, 2010 Share Posted October 22, 2010 Re: cylinder honing for silicone brake fluid. If you run the hone and very slowly pull it out it will minimise the cross-hatch pattern. I always use silicone grease on brake rubber piston cups , pistons & brake cylinder walls ; both master & wheel cylinders. Sil - Glide or Silicone Dielectric grease can be used. I never had ANY leaks or weeping when using Dot 5 Silicone brake fluid ! Link to comment Share on other sites More sharing options...
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