scargo

One of the first things I did with my S2K was to measure the sound level of the engine and exhaust at idle. The reasoning for doing so is that problems seem to first show themselves as noise somewhere so I wanted a baseline for future comparison. I read that the #4 cylinder problem first showed up as noise. I suppose one could also use a stephascope to isolate a noise much like a doctor hears a noisy heart valve. I used a Radio Shack digital sound level meter. I hope this information is useful to someone.

S2000 Decibel Level Readings at Idle
17 June, 2000

Engine
A Weighted, Slow response
71 DB, Right, Front, and Left side of engine
A Weighted, Fast response
71-72 DB, Right, Center, and Left side of engine
C Weighted, Slow response
Right= 80 DB
Front= 82 DB
Left = 82 DB
C Weighted, Fast response
Right= 79 DB
Front= 81 DB
Left = 81 DB

Tail Pipe
A Weighted, Slow response
79-80 DB
C Weighted, Slow response
101 DB
C Weighted, Fast response
100-101 DB

Engine Fans
C Weighted, Slow response
86-87 DB
C Weighted, Fast response
87-88 DB