Forums/Z31P/z31-repairs-forums suspension-chassis-and-brakes-aa/85 z31 NA Brake help
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85_z31: (2016-10-19 17:12:22)
I am finishing up my 85 z31 before I get my license, I bought new brake calipers and drilled and slotted rotors, we bled all the lines from right rear, left rear, right front, and left front about 10 times, after that we went to take it for a ride and the brake pedal was still very squishy? I just ordered a new master cylinder should that fix the squishy brake pedal? And should I bench bleed the master cylinder or can I just put it on and start bleeding?
nickvance: (2016-10-19 18:35:20)
keep pumping the brake and it should firm up
85_z31: (2016-10-19 20:07:22)
Ok thank you very much
shromy: (2016-10-19 22:58:42)
you sure you didnt flip the calipers to the wrong side the bleeder screws have to point up.
mtherkamp: (2016-10-20 12:52:44)
left rear is actually further away from master cylinder than the right rear, start with that one first, then do right rear, right front, left front. The way the lines are run it is a longer distance to left rear. Also, mine we also spongy for a while, but after driving it around and using the brakes for a few days the pedal got nice and firm, so suspect air pocket worked its way out up to the master.
mtherkamp: (2016-10-20 13:25:45)
if you want to bench bleed the master, put it gently in a vice, run rubber hoses up from the outlet ports back into the reservoir, fill the reservoir with fluid and push on the piston until you don't get air coming out of the hoses anymore
nickvance: (2016-10-20 13:42:30)
post a pic of your Z31 i want to see it with fresh paint
88sinZ: (2016-10-21 03:06:52)
i've got a pair of front 5lug late model N/A hubs if you're interested. cheap cheap, i'm running late turbo hubs now and have no use for them. Fresh bearings and seals.
if you want to keep 4lug a 17x9 +10 (F) and -5 ~ -10 (R) is what you should aim for, unfortunately this is going to severely limit you to huge spacers or hunting super rare, expensive wheels.