Done and picked-up by lunchtime...
Miscellaneous saddles and 2 x blanking plugs for the existing distribution block...
Fast forward to the evening. JtC came up and the new hard lines went in like a dream; it all looks pretty darn neat...
We retained the original distribution block for the existing front-to-rear line, then blanked off the old ports to the front brakes and fed the block from the rear master cylinder circuit.
While JtC was bolting up hard lines, I set to work pumping 2.5L of diff oil into the 12 bolt.
A once over the car to check all nuts were torqued up and it was time to bleed!
Though it soon became apparent that no fluid was coming out of the master front circuit...
After some choice words and head scratching for half an hour, it was time to hit technical assistance. We soon found this...
Right Stuff Detailing - Tech Centre - Trouble Getting Pressure To Brakes
Sounded like our problem - and answer 2 seemed the most likely culprit...
"The most common issue is the rod that comes out of the front of the brake booster and pushes the piston of the master cylinder. (NOT the booster rod that goes to the pedal, the opposite side.) This rod is often slightly too long and causes a pre load on the master cylinder. This pre load generally prevents fluid from flowing properly out of one of the master cylinder ports".
So we set to work and cracked the nuts holding the master to the booster. A couple of 3 mm thick spacers went in and the nuts re-torqued... success! Fluid exiting the master on the front circuit!
Note the master mounting nuts reversed and square spacers between the master and the booster...
We gave the brakes a bleed to see if we could get brakes - and we can - the Chev has operating disc brakes!
Technically we could throw the wheels on and go for a drive, but it was almost 23:00 so the decision was made to up-stumps for the night. Removing the temporary spacers and shortening the booster-to-master push rod would have to wait till next time.
Sooo close!
John out
