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Crotchety Old Bastard
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Brake Vac Line: Why does it have a one-way valve?
Why does the vacuum line for the brakes on my SC have a one-way valve?
Am I to assume that the valve opens only when the engine is pulling a vacuum? What are the symptoms of a bad one?
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
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08-12-2002, 07:29 AM
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Insert Tag Line HERE.....
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Its actually there to keep the loss of vacuum to your booster on low/no vacuum situations. Think of it more like keeping a steady amount, not fluctuating like the vacuum in the engine does under different throttle conditions. You shouldnt notice any "engine" issues, like bad idle, power, etc if it is bad, unless your booster is leaking. Simply pinch off the lines on either side with the engine running, you should notice no change in RPMs.
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08-12-2002, 07:42 AM
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78 Porsche 911SC 3.0L, 3.3Turbo soon. 
78 Porsche 911 Turbo
1972 porsche 72 rsr clone
1995 porsche 993
1995 porsche 993
1990 porsche C2 911
1966 porsche 911
1984 Porsche 911
2003 Porsche 996
