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4flyboy 4flyboy is offline
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Join Date: Jul 2006
Location: Delray Beach/So. Cal
Posts: 2,857
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Brake Booster failure '84 Turbo Look?

Hi guys,

My new to me factory T.L. has the vaunted 930 suspension and brakes.....not to be confused with breaks. Just sayin.

Anyway, I'm finally finding time to sort the car and the brakes are disappointing to put it mildly.

They stop the car but it feels as if I'm pushing against a firm piece of drywall. My buddy Mark here in Tampa has a vacuum gage.

He had me sit in the car and do the requisite start of the engine with my foot on the brake pedal....it doesn't soften or move at all.

We then pulled the check valve from the back of the Booster we got a solid 21 reading from the metal nipple that protrudes from the panel behind the booster with the vacuum gage..

A blow on both ends of the check valve and pipe produced airflow one direction and a no airflow the other.......

Does this mean that my Booster is faulty? Dread! Are there other tests that I may preform?

A search of our hosts parts catalog warns of one manufacturer and astronomical pricing......and indeed a new "oem" booster is well North of $800.....yikes.

Alternatives? Rebuilt? Rebuild kit?

I've done a search and there seem to be few failures....usually Master Cylinder and such?

I'd appreciate any input and suggestions.....Thanks, Scott
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Scott

"Houston, Tranquility Base here, the Eagle has landed"

Silver 1984 M491 Sunroof Coupe

Last edited by 4flyboy; 01-21-2014 at 08:37 PM..
Old 01-20-2014, 10:34 AM
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