Brake system-Refreshed and No pressure

[dxke38]

Yes Coopercraft are larger four piston calipers which is why I was disappointed with the amount of effort needed at the pedal. With the 5/8" master cyls less effort was required. I notice no difference in the pedal travel if the brakes are bled of all air and the linkages adjusted correctly.

[mtnjag]

Good news. Thanks

[mtnjag]

Do you know the piston size?

[dxke38]

Sorry Layne, I don't know the piston size. I believe they are the same as Ser 2 front caliper small pistons, just four of them instead of two alongside a larger one. Coopercraft don't state the size on their website but if I can verify I'll post it. The benefit to me was the increased brake pad area.

[mtnjag]

Thanks for the info. Yes, Coopercraft site keeps it a secret

[mtnjag]

Brakes are functioning well with good balance front to rear. Broke in new pads and have tested with hard braking with positive results. Have installed original Dunlop 5/8" MCs with different stroke distances, orig front calipers to rear, and the Wilwood 4 piston (small pistons) at the front. Finally got it bled out which was more of an issue than it should have been but evidently had a stubborn pocket that we worked out.

Thanks for all the help.

[poofacio]

I have exactly the same problem, I will let you know when (if!) I find a solution.

Tried everything, every method, every suggestion, still got air in rear system. Clamping the flexi (to rear cage) gives a solid pedal so the M/C is fine.

[mtnjag]

I did get it, just drove and bled, drove and bled. Why? Don't know.