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punched into the center core, which can reduce total flow capacity. The turbulence created by the perforated louvers therefore achieves greater muffling capacity at the expense of total volume of air flow. The more turbulence created, the greater the muffling and less total air flow / power
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passes straight through the center of the muffler. The basic design consists of one smaller tube centered inside a larger outer tube that is enlarged or swollen in the middle. The gap between the enlarged part of the outer tube and the center tube is packed with
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production capacity. Depending on the directionality of the louvers, one can choose between slightly higher flow capacity or slightly greater muffling. This lower flow but slightly quieter design approach is commonly used in glasspack mufflers.
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A longer glasspack will reduce noise to a greater extent than a shorter one, as sound is dissipated into the fiberglass damping material. Other glasspack mufflers have perforated
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mesh, and more advanced acoustic engineering, reducing noise while retaining the power-preserving advantages of a straight-through exhaust flow.
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Some modern muffler designs are similar in principle to the glasspack, but use more sophisticated sound-absorbing materials such as
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Glasspacks and other modifications that increase the noise level of exhaust systems are illegal in the United
Kingdom.
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The glasspack is an old, simple, and relatively inexpensive muffler design that has less
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than other types of muffler, but is less effective at muffling noise.
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This article is about the auto part. For the rock band, see
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53:. Unsourced material may be challenged and removed.
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113:Learn how and when to remove this message
356:Crankcase ventilation system (PCV valve)
213:
7:
246:"Noise from roads, trains or planes"
222:"Frequently Asked Questions (FAQ-U)"
51:adding citations to reliable sources
248:. UK Government (Crown Copyright).
14:
27:
458:Overhead valve (pushrod) layout
38:needs additional citations for
1:
263:Diagram of glass pack muffler
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299:Internal combustion engine
15:
916:
767:Diesel particulate filter
719:Idle air control actuator
660:Engine control unit (ECU)
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187:Aftermarket exhaust parts
832:Viscous fan (fan clutch)
744:Throttle position sensor
453:Overhead camshaft layout
129:is a type of automobile
371:Core plug (freeze plug)
952:Vehicle modifications
612:Compression ignition
47:improve this article
762:Catalytic converter
888:Knocking / pinging
480:Combustion chamber
142:, hence the name.
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903:Stratified charge
670:Electrical system
652:Engine management
485:Compression ratio
425:Starter ring gear
324:rotating assembly
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777:Exhaust manifold
642:Spark plug wires
528:Boost controller
515:Forced induction
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579:Fuel injection
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632:Ignition coil
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564:Petrol engine
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559:Diesel engine
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133:in which the
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64: –
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58:Find sources:
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42:
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36:This article
34:
30:
25:
24:
19:
18:The Glasspack
817:Electric fan
617:Coil-on-plug
543:Turbocharger
538:Supercharger
410:Main bearing
400:Firing order
390:Displacement
336:Block heater
320:Engine block
308:Part of the
307:
240:
229:. Retrieved
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197:Modified car
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164:
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126:
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109:
103:January 2018
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57:
45:Please help
40:verification
37:
841:Lubrication
805:Air cooling
622:Distributor
574:Fuel filter
552:Fuel system
533:Intercooler
500:Timing belt
490:Head gasket
420:Piston ring
135:exhaust gas
62:"Glasspack"
941:Categories
893:Power band
853:Oil filter
827:Thermostat
772:EGT sensor
734:MAF sensor
729:MAP sensor
714:Air filter
678:Alternator
637:Spark plug
569:Carburetor
495:Rocker arm
435:Valvetrain
366:Crankshaft
310:Automobile
231:2023-10-11
208:References
140:fiberglass
73:newspapers
627:Glow plug
589:Fuel tank
584:Fuel pump
351:Crankcase
202:Boy racer
127:glasspack
926:Category
871:Dry sump
867:Wet sump
858:Oil pump
822:Radiator
739:Throttle
599:Ignition
470:Camshaft
395:Flywheel
376:Cylinder
361:Crankpin
181:See also
173:Legality
898:Redline
782:Muffler
683:Battery
607:Magneto
159:louvers
131:muffler
87:scholar
921:Portal
709:Airbox
688:Dynamo
415:Piston
405:Stroke
384:layout
312:series
146:Design
89:
82:
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68:
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881:Other
505:Valve
475:Chest
94:JSTOR
80:books
863:Sump
380:bank
341:Bore
66:news
848:Oil
437:and
322:and
49:by
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125:A
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101:(
91:·
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20:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
