Strange Air Trap

[Gary Derian]

It is a Helmholz  resonator designed to cut intake noise.

Gary Derian <gderian at cybergate.net>



>Hi all,
>  a mechanic friend of mine has asked me on several occasions if I could
explain a strange type of air trap that is on 80+ autos.  Today he asked
again.  Here are the particulars:
>  1994 Chevy S10, 4.3L V6.  On the air intake tube, close to the radiator
support, there is a small opening on the top of the tube less than an inch
square, that leads to a large, molded, plastic buble.  This plastic buble is
empty and does not have anything attached.
>  My guess is that it is some kind of air dampener.
>  Does any body know why?
>
>
>
>
>Clarence Wood
>Software&Such...
>1982 280zx Turbo
>Savannah, Tn.