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Old 09-26-2010, 10:52 PM
MikeRutledge MikeRutledge is offline
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Default Brake systems on Turbo Regals

86 Grand National Did all of them or any have powermaster brakes Hydroboost or vacuum and if so how can you tell what your car is supposed to have?
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Old 05-03-2011, 02:49 PM
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kenmosher kenmosher is offline
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Default Re: Brake systems on Turbo Regals

The 1984-85 cars had the Hydroboost system with the LM9 engine.

The 1986-87 cars had the PowerMaster (electric) system.
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Old 09-10-2013, 07:06 PM
Oregon87T Oregon87T is offline
 
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Default Re: Brake systems on Turbo Regals

Quote:
Originally Posted by kenmosher View Post
The 1984-85 cars had the Hydroboost system with the LM9 engine.

The 1986-87 cars had the PowerMaster (electric) system.
What exactly is it that goes "wrong" with the PowerMaster system? My car has 32,xxx miles and is flawless but all original. What % of them go bad and what happens, Ken?

Sorry I know a broad question, but I still haven't seen EXACTLY what part it is that apparently fails a lot.



thanks!
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Old 11-20-2013, 02:03 PM
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Default Re: Brake systems on Turbo Regals

The accumulator bulb is probably the #1 failure. It looses the high pressure nitrogen gas charge eventually. My 45K mile car has gone through at least 3 of them that I can remember.

The brake switch on the unit sometimes will develop a leak around the connector (and there was an early recall to replace the switch with a new design).

Occaisonally the pump motor will die ... usually from running too much/too long due to leaking internal seals in the MC or a bad accumulator.
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1987 GN original owner 650+ HP Black
2015 BMW 328xi XDrive wagon
2012 Volkswagen Tiguan (the Tig!) Night Blue Met (sold)
2006 Trailblazer SS Red Jewel Tint 395 HP AWD (sold)
2014 Silverado LTZ Crew 4WD
2012 Honda VFR 1200F Tahitian Blue (sold)
2015 BMW S1000R Racing Red
2013 Honda CBR500R Red (wife's bike)
2014 Triumph Bonneville T100
2003 Harley Davidson V Rod Anniversary Edition
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