When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Yes we combine shipping for multiple purchases.Add multiple items to your cart and the combined shipping total will automatically be calculated.
1979 Honda Power Chamber Exhaust System - Vintage Motorcycle Ad
Original, Vintage Magazine AdvertisementPage Size: Approx. 8" x 11" (21 cm x 28 cm)Condition: Good
A UNIQUE METHODTO TUNE THE EXHAUSTFLOW AND OPTIMIZETHE POWER CURVEOF MIDDLEWEIGHTTWINS,An engine can achieve its Ifull horsepower potential only Jwhen it has some sort of Jsystem to scavenge exhaustgases out of the combus- EMtion chamber efficiently, rflYears of research f JBhave proven however, EMthat there is no one eflideal system for allengines. For example,the gas-flow pulses of OKCa four-cylinder enginediffer greatly from Ot ....thoseof a single-cyl i nder power pl a nt. fijEsMMAnd so does the opti-mum exhaust system.For middleweighttwin-cylinder engines, HondaHAWK*'ENGINE RPM(IOOO)engineers have developed aunique system to make the mostof this particular configuration.The Power Chamberexhaust system.By routing the alter-natingexhaust pulsesKB from each cylinderK»f through the expansionJj area and into both muff-lers, the Power ChamberKHA relieves the back pres-sure at each /r cylinder precisely whenthe exhaust valve opens. Andthe exhaust pipe curl inside thechamber makes it possible forthe design engineers to selectthe exact pipe length for opti-mum exhaust flowtuning. Thenet benefit is a significantincrease in mid-range perfor-mance (see accompanyingpower curve).But the Power Chamberdoes more than boost perfor-mance. It also plays a principalrole in the reduction of exhaustnoise. Which means the mufflerscan be designed for a pleasantexhaust note, a shorter, sportierstyle, and lower weight.And si nee the PowerChamber is located directlyunder the engine, this places asubstantial percentage of theexhaust system’s weight closerto the machine’s center ofgravity. The motorcycle’s massis more centralized, whichprovides improved handling.Tuned exhaust pulses.Tuned back pressure. Morepleasant exhaust tone. Idealexhaust pipe length. Betterlooking mufflers. Masscentralization. And MkMLmost i m porta nt I y,improved JC KF,mid-rangeW Power-A'1theseTflBw/ benefits are aT d i rect resu It ofHonda’s uniqueapproach to one problem.You can see the PowerChamber exhaust system onthe 1980 Honda CX500 Custom,CX500 Deluxe, Hawk"(CB400T),CM400T CM400A, and CM400E.At your Honda dealer.HONDA.FOLLOW THE LEADER.©1979 American Honda Motor Co.. Inc.13962-AL-7912-04
