T&T: Intake manifold muffling

[Thomas Averill]

If you have ever taken the air cleaner off your car motor and opened up the
trottle under load, you will note that most of the engine noise comes from the
intake.  A friend of mine demonstrated that if he cut some vent slots into a
gallon plastic jug and shoved the opening into the intake port of his Leman
diesel, it quieted the engine down a great deal more than the wimpy foam sock
that Lehman provides as an air cleaner. So now he has the jug taped to the
intake.  He also lined the engine room with a thin sheet of lead which really
made the engine noise much less.



Has anyone out there tried putting a silencer on their Lehman intake?  If so
what did you use (build) as an intake silencer??  My first thought was to
adapt a car muffler.  I guess an added intake restriction could cause a
richening of the fuel mix (an oily foam sock doesn't help much either).  What
do the experts (or non-experts) thinK?



Thanks



Tom