Missed an update here a few weeks back... so here's a run down on what happened about 2 weeks ago...
Today (2 weeks ago) I pulled the "jumbo" brakes off of the 940 wagon that I'm decomissioning at the moment, and then I pulled the right front brakes off my 740 sedan, and then I replaced only the right front with the jumbo gear, and took it for a drive. The old ones were knackered, pitted, rusted, ruined, and shaking like crazy, but still worked, just not pleasantly. Turns out all the shake was from the right hand side gear, with the left being OK. Anyway, taking it for a drive was to see what the retard on each side was like post swap of only the right. IE, how even are the two setups purely from a hydraulic pressure to brake force perspective. I know the pads are obviously different, and could have played a roll in the outcome, however the result was: Nearly exactly equal. There was a slight tendancy for the jumbo gear to slow the car more, but only slight. Could just be the pads. There was discussion about master cylinder size/applicability here, too. I will have a measure up tomorrow, and check the masters in both cars, but it seems to me that they're probably not different, and certainly, the 740 pedal feel was unchanged, or unnoticably changed.
And a few pictures of the old ruined and new stuff:
Old ruined:
https://twitter.com/FredCookeNZ/status/ ... 7177055232
Jumbo girllng:
https://twitter.com/FredCookeNZ/status/ ... 5968238592
Jumbo rotors:
https://twitter.com/FredCookeNZ/status/ ... 8666524672
ABS Girling back:
https://twitter.com/FredCookeNZ/status/ ... 7735993344
Both sets of rotors were worn to maximum limits or beyond, but it was still an upgrade. I'll put fresh rotors and pads in it at some point in the future. How bad was it?
22mm rotor was 21.5 at the lip and 19.2 in the trough the pad left, with min thickness 20, it's safe to say these are dead.
26mm rotor was 26 at the lip and 24 in the trough the pad left, with min thickness 24, worn out, but still usable and OK.
IE, I went from 19.2mm to 24mm today, and when I replace them will go from 24mm to 26mm :-)
Next post, today! And yesterday, too.