hi guys just finished installing r31 brakesto my datsun 1600 i got front and rear brakes with a new master but need help i have bled the brakes heaps of times they are not going hard no peadle any help will be helpfull cheers

1) If you've replaced the master cylinder it needs bleeding before the calipers.
2) Have you installed the calipers with the bleed nipples at the highest point? Any air will sit at the top of the piston cavity and won't bleed out if the nipples are located lower than this.
3) How are you bleeding the calipers? To be absolutely sure no air gets back into the system, lock-off the bleed nipple before the brake pedal bottoms out.

Hope this helps

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Rod

u havnt got any leaks?
my car was like that and turns out i have a bad pipe

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YOU JUST GOT TO LOVE JDM AND BMX
current rig's:
1970 datsun 1600 p510: 73 SPEC WITH SR SHED
prev rides:
1970 datsun 1600 wp510 project SOLD
1969 datsun 1600: SIMS metal
1984 KE70 corolla:defected/crushed
1985 KE70 corolla:SOLD
1982 KE70 4AGE drift pig SOLD
1978 120Y wagon SOLD