brake bleeding

[jlex]

Originally Posted by Cory M

I've used the hell out of the Motive bleeder I bought for $40 15 years ago. Probably one of the best tool purchases I've made. Other than me being a dummy and forgetting to clamp the overflow line it's been trouble free and works great.

If you actually put fluid into the bottle, be careful about the condition of your line. The plastic line broke for me due to age and got fluid into the trunk. Go to Home Depot and get a replacement line if you haven't done so already. That brake fluid is corrosive...

[jlex]

Originally Posted by cmcfaul

What happens if you push the brake to the floor?

Chris
89 Carrera

You run the risk of damaging the seals in the master cylinder as they go beyond their normal range of travel into an area of corrosion.

[RWebb]

pressure bleeding will not introduce air into the system

- unless you let the fluid level in the m/c get too low

[aston@ultrasw.c]

Originally Posted by cmcfaul

bias was fine. I have to believe Porsche designed the brakes with perfect bias with matching compound. Will put some teflon tape on the bleed screws and bleed the rears some more. Rear pads were wearing 2x faster then the fronts. Bet that is reversed now.

Chris
89 carrera

what if the rear pressure limiting valve failed i.e. allowed full hydraulic pressure to reach the rear

the rears could start working too hard, overheat, wear out etc...

just an off the wall idea

[cmcfaul]

Originally Posted by aston@ultrasw.c

what if the rear pressure limiting valve failed i.e. allowed full hydraulic pressure to reach the rear

the rears could start working too hard, overheat, wear out etc...

just an off the wall idea

Bias is to the front since new pads and ffg luid change.

Going to bleed the rears the two person traditional way. If the does not have the desired effect will pressure bleed or rebuild rear calipers. If still not perfect will replace mc
.

[coolmac]

I have the same condition, only reversed. I rebuild all calipers, with new pads and have rear brake bias. I take it for a ride and the rear brakes are smoking, with the front only warm. I'm going to replace the master cylinder. I can't find a Ate Master Cylinder, out of stock, everywhere, for a reasonable price.
Any other Master Cylinder recommended. 1981 911sc

[aston@ultrasw.c]

i have always wondered about buying a brake pressure gauge but never had a good reason

[michael lang]

Originally Posted by jlex

You run the risk of damaging the seals in the master cylinder as they go beyond their normal range of travel into an area of corrosion.

Is there a repair for this or is replacement of the master cylinder the only option?

[jlex]

I suppose you could rebuild the MC by honing the bore and putting in new seals, but I suppose most people just buy a new one. Others who have actually done a rebuild may want to chime in...