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914World.com _ 914World Garage _ weird question - exhaust "pulses"

Posted by: jkeyzer Jan 9 2006, 01:42 AM

Oddball question of the day:

My exhaust pulsates strongly at idle. Is this normal?

If I hold my hand near the exhaust pipe I hear a rapid foof-foof-foof-foof and can feel the pulses of pressure hit my hand. It's pretty strong, much stronger than any other car I have owned.

Is this a function of my exhaust flow characteristics or an indication that something is wrong (leaking valve, nonstock cam?) or is it perfectly normal?

Just curious...

Posted by: Dr. Roger Jan 9 2006, 02:17 AM

probaby emphasized due to short length of exhaust system and/or narrow pipe compared to front engine cars. popcorn[1].gif

Posted by: bondo Jan 9 2006, 02:20 AM

Mine does that.. in fact I was just noticing that yesterday while I was trying to determine if it was running fully on all 4. I never notice with my last 914 because it had 4 exhaust tips.