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Registered
Join Date: Nov 2017
Posts: 175
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Pressure Bleeding 76 911 !?
I am presuming that my 76 2.7 911 brake plumbing is much the same as most:
How can you use a pressure bleeder when the system from the brake fluid reservoir to the MC is not designed to be pressurized eg the hose connections are only push fit rubber hose connections (especially the short 2" rubber (RES to MC) connections located between the back of the brake pedal and bulkhead. I wonder how many may have pop'd off or leaked fluid though applying pressure to the non-pressurised section of the brake system. Be interesting to know how people get around this, before I do it: Take a chance, put additional hose clips on, my presumption is wrong and out of factory they do have hose clips on all connections, push fit is considered adequate ........? Cheers |
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Join Date: Jun 2009
Location: Sweden
Posts: 1,189
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Use a lower pressure and you should be ok
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SEARCHING FOR ENGINE 6208326 (last seen in car with VIN 9111101452) 911E Coupe -70 Carrera 3,2 -84 Sold |
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Use the pressure recommended in the bleeder info. I’ve had my pressure bleeder for about 12 years and never had any leaks.
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Registered
Join Date: Apr 2019
Posts: 101
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I use the motive bleeder. I had 5-10 psi on it and no issues. Make sure you pinch off the vent line and watch for leaks out of it. I ended up with a footwell full of brake fluid…
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Pressure blending works fine, but make sure you pinch off or cap the overflow tube or you’ll have a whole bunch of fluid running out near the front wheel!
Oops, my browser didn’t refresh and I gave you the same answer as Nonstock, but now you have two opinions saying the same thing.
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Rutager West 1977 911S Targa Chocolate Brown |
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Join Date: Oct 2018
Posts: 1,023
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I use 10-12 PSI on my 1979. No issues.
The only time I did have an issue was when I got distracted and left pressure in the system while eating dinner. A little fluid started leaking past the reservoir hoses. |
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Registered
Join Date: May 2002
Location: Portland, Oregon
Posts: 12,651
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Same here on my 1973. Never an issue. Never a leak.
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Harry 1970 VW Sunroof Bus - "The Magic Bus" 1971 Jaguar XKE 2+2 V12 Coupe - {insert name here} 1973.5 911T Targa - "Smokey" 2020 MB E350 4Matic |
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Targa_PB_78_SC
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I put a vacuum cap on my vent line. Use about 5 psi, 78 SC with boost. Pressure bled the fronts, I have speed bleeders for the rears. Both work well. I’ve have brake fluid leaking out the frunk before I realized I needed to plug off the vent on the reservoir.
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BareRearedRookie |
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Registered
Join Date: Nov 2017
Posts: 175
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Many thanks everybody
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