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Finally I did the brake bleeding, My first time with motive bleeder. Flushed two bottles of the racing stuff, didn't touch the brakes, I'm pretty comfortable with the braking action.
When I bought the car, brakes where stiffer, but during hard braking the car wanted to turn a little. A local shop performed the four caliper overhaul, they found a couple of frozen caliper pistons. Since then pedal stiffnes hasn't been the same. Should a blame dose two frozen caliper pistons for the less pedal displacement it used to have? |
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09-22-2017, 08:14 PM
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Registered
Join Date: Jul 2000
Location: So. Calif.
Posts: 19,910
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The brake system only needs 1 liter for a complete fill. Wasting new brake fluid is well.... wasteful. Spitting out a liter of new ATE Blue is about $10, Motul RBF about $17, Castrol SRF about $65, but that's the result when pressure bleeding to drain, flush and refill.
Sherwood |
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09-23-2017, 09:33 AM
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Join Date: Jan 2010
Location: SF Bay Area
Posts: 503
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There is a hose (venting?) on the side of the MC reservoir. Does that have to be plugged/sealed when using the Motive?
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11-22-2017, 10:39 PM
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Mighty Meatlocker Turbo
Join Date: Apr 2016
Location: North TexASS
Posts: 18,538
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Quote:
PS - when pressure bleeding with a compressor, you can attach the air supply to the vent nip and leave the original cap on. Last edited by Rawknees'Turbo; 11-22-2017 at 10:45 PM.. |
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11-22-2017, 10:42 PM
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Join Date: Jan 2010
Location: SF Bay Area
Posts: 503
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Quote:
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11-22-2017, 11:12 PM
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cycling has-been
Join Date: Sep 2004
Location: Jersey Shore
Posts: 7,247
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Quote:
How old is that stuff? If it's older than a year I wouldn't be using it. Bill K
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73 911T MFI, 76 912E, 77 Turbo Carrera |
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11-23-2017, 07:30 AM
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Counterclockwise?
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The vent is for boil over and should come out just in front of the driver's a-arm. I use a set of surgical forceps that clamp down.
I thought an unopened can of brake fluid should be good for a couple of years. I didn't think you could get blue anymore.
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Rod 1986 Carrera 2001 996TT A bunch of stuff with spark plugs |
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11-23-2017, 09:18 AM
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Join Date: Jan 2010
Location: SF Bay Area
Posts: 503
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Quote:
You say surgical forceps... the typical ones do not self clamp. How do you keep them clamped down? |
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11-23-2017, 09:36 AM
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Counterclockwise?
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Quote:
The forceps you show do self clamp.
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Rod 1986 Carrera 2001 996TT A bunch of stuff with spark plugs |
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11-23-2017, 10:33 AM
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Join Date: Apr 2011
Location: behind the redwood curtain, (humboldt county) california
Posts: 1,438
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Having spent 10 years as a service writer/manager at GM/fiat/ssubaru dealership, I often got called on to push the pedal for the mechanics. Most of the cars were fairly new but some of them were 10-30 years old.
I noticed a significant number of the older cars experienced a failed maaster cylinder right after the bleed. I put this down to the "full" travel of the MC piston(& cup seal) during the bleed. My sense was that during normal use the brake pedal would only travel part way down the bore. The seal would push any debris only part way down the bore. If you pushed the seal past/over this pile of crud you risk nicking the seal. If the fluid is flushed, every one or two years, (not just bled), you are ok to use foot power. IF you don't know the service history on the car, foot bleeding is a risk. BTW, the shop went to power bleeding and master cylinders enjoyed much longer life. I have had good results with mighty vac. When I install the lift (& do more brakes), I will go to the motive bleeder. Chris |
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11-24-2017, 08:29 AM
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Counterclockwise?
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^^ What you say is true and that is why you put a block of wood under the brake pedal so it does not go all the way down.
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Rod 1986 Carrera 2001 996TT A bunch of stuff with spark plugs |
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11-24-2017, 08:43 AM
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MAC
