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Old 09-14-2010, 09:00 PM   #1
Redwinger
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Join Date: Dec 2001
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Location: Newburyport, MA
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Hellrot

Default Header leaking will I damage the car?

As the title states, my headers are leaking badly on my 02 Impreza. New OEM header and gaskets are comming tomorrow and I should have them installed by Sunday.

Will the lack of backpressure hurt my engine in any way if I drive it daily in the meantime...or will it just hurt my ears and my brain from huffing all the exhaust fumes?
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Old 09-14-2010, 11:00 PM   #2
PhilSine
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02 WRX Wagon (WRB)
98 OBS-T, 91 Legacy SS

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The lack of backpressure isn't harmful but the open exhaust direct off the head offers a chance of burning an exhaust valve. Just last week I pulled the head from a friends Subaru engine with a burnt exhaust valve caused by running an open exhaust for only two days.
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Old 09-15-2010, 12:32 AM   #3
Y_I_K_E_S
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+1... I would drive it as little as possible until you get the new gaskets put on.
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Old 09-15-2010, 09:27 AM   #4
Redwinger
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thanks guys, i only drive about 4 miles round trip to work - but i'll take the motorcycle if i'm risking doing more damage.
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Old 09-16-2010, 10:54 PM   #5
Bluefoton
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now with a HID retrofit

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why would an open exhaust / leaky header burn valves???
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Old 09-18-2010, 04:24 AM   #6
williaty
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Quote:
Originally Posted by Bluefoton View Post
why would an open exhaust / leaky header burn valves???
It doesn't.

Badly tuned cars that suddenly have no O2 sensor because the exhaust has been removed can and do cause engine failures though. Properly tuned, the car will run safely with no header on it. Won't pull worth ****, but it'll run fine.
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Old 09-20-2010, 07:23 PM   #7
Redwinger
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BTW. Got this leak fixed and my car feels amazing, best in years. Quiet, less vibration, and pulling better all around the rpms. Funny how you forget how your car is supposed to feel after all those miles.
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