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About Sandy post. (Sandy, Oregon) 1938-current | View Entire Issue (May 28, 1981)
Pog» 14 Im pro pe rly in fla te d tires a re costly unsafe There is a sure way to in m deage It crease your gas mileage. It w ill not cost anything but your time and a little effort: Check the a ir pressure in your tires regularly Chances are good that m ost d r iv e r s have not checked — or inspected — their tires today, yesterday, a week ago. or even a month ago Thus, u n d e rin fla te d tires nation are iX n T across a ° w a s the t e oVm,Ikons causing a waste of m illions of barrels of oil each year. We checked (with permis sion) a group of cars on a large parking lot and found that a striking percentage of cars tested had underinflat ed tires - many drastically below the tire m anufactur e rs recommended a ir pres sure level. With me was a B F Good rich tire specialist who had w ith him a professional, highly accurate a ir pressure gauge norm ally used to test tire pressures on race cars Selecting cars at random, all four tires were checked, the inflation pressures recorded, tire sizes and conditions noted, and the manufactur e rs recommended inflation Turbo engines a re boost in to fu tu re An<J„ Dr,ver Predicts Ihe lu 'L e " P "'’ " US ' n' ° A tu rb o c h a rg e r is de- 10 " * - ? ■ “ "■ some of ». _ « h as°r tThreni dcS.cr,bes lhe h , th h< decade 'per- this otherwise lost heat ener «y and ^ e it to help the en- gine overcome some of its ch a re ,1 rh " rb° ' chargi r — the most inexpen- duce <he engine's volum etric efficiency sive way to transform an or- A turbocharger consists of into a high-powered machine ^ h Îh d t i JeOPar<J‘Z,nK e‘ ther lia b ikty or gas mileage * by‘ Product of the gas inlet compressor c o n n e c t^ by a common shaft The ex- haust turbine is driven by the exhaust stream at speeds < onomy era, turbochargers can deliver high perform - ance from a small displace- ment engine Running at low of up to 120 000 rn m Th inlet comp S ^ X T v e s at the same high ia te pressing a,r tS f,ve t0 X rpm. the engine produces h c V m Z " v b“ ‘ Th hk 3 KentucRy Î S 2 2 5 Ü “ ,h\ S’ retCh pounds of boost pressure ,nd intake manifold, making the r " u ,“ n« " ’ ■«■™ much As a resu lt h l v j As a result. Buick, hord. In te rn a tio n a l, Mercedes- sunnZ.n d ° it,ak ’ Porscbe' Dat‘ sun and Saab now - or w ill offer stock produc- tio n ca rs fe a tu rin g the d „ v n ? " ,rhos " " " '" T S' n' - dU"- °Perate on the amount of air available, presto - more ef. ficiency' M°re m ixture in the corn- bustion cham ber creates higher cylinder pressure - hence the engine realizes a " « " ’ prew.on r’ a“ „ ,“ L ..“ cars w'thou* ' " ' ‘ " “ '"K e" ‘ p ,,,o n s o r c h a m b e r ’ " ’ P " Th,s ’"«»<■« cylinder «»n fcisieaUv. r . 7 kel ARCO I 1 * * ARCO f*** R Ï» » graphi ... . 1 fflotor oil l: : < „trbhehargm g £ h a u s t t T f 'ln T " ' ’ ’ , 1 Î u f° rre 3 rg e iz T d a . r “ i n . o ' î i ’' |,r” SUr' thorah he englne' thereby increasing the en- g in e , a b ility Pressures fo r that p articular had ... . . . . . pressures fo r that p a rticu la r had good tires and the rest Such severe underinflation size tire were w ritten down had one or more tires that results in increased tire fle x A fter checking 25 vehicles showed problems caused by ing, which can cause exces — domestics and imports - spot balding, worn shoulders sive tire temperatures and we found that 39 percent of and cupping. early failure Vehicle stabili all the tires checked were On one car we checked, ty and handling also can be underinflated by four pounds th« two front tires had seven adversely affected - result per square inch (psi) or pounds less a ir than recom ing in severe sway or over more Twelve percent were mended, and the left and steer, for example o v e rin fla te d fo u r psi or right rear tires had 15 and 16 more. Many studies have shown pounds less, respectively, that improper inflation can Thirteen of the 25 vehicles than they should have had cost consumers money breathe Wh" e '"» « ■ "» "» combus- tlon e if 'C»ency and volume lr,C '‘" ‘,lcn cv are lhe ideal, there are trade-offs which lim it the degree of practical turbo ,n o d , h ? » dam & a™ rhere 15 mand on lhe engine when e engine operates at a low rpm only when your foot ample, as (he effeetive eom- pression ratio increases does cylinder pressure T h is increases the lo ld im , h . L Thus^you T a te ■ages J, high poweerJ whe"„ „T -ben1oXD „ ° ^ ^ gasoline powered a ir pump, ¡■ pun, a ir through ,Phe £ take, pumping it into the combustion chamber, and ■ben forces it out throueh ■be exhaust system P o w L » derived by adding fuel to P',h ' n,i * I • Purchase 6 quarts cash & prem '' ’eTeXda"bd the entire eneme T h " 05 , ° n tm I ’* ® * p ir X 'K tern designer undor«, a turbo“ e f f ^ L U" der5Un<i a and . L " . T " an en«1M “ them ‘ 1 '" * ° ac’ to „ " , " * ,Urb° dev,lop- the a ir and burning the re sultant m ixture in the com For proper engine func bustion chamber tion. many design and me During combustion, con chanical factors must be siderable energy is released weighed when the fuel is burned in I^uel-injected engines are the engine cylinders While , ? . - th* y are easier to in- some of this energy is con s ta ll and m a in ta in . The ve rte d in to useful w ork precise combination, setup pushing the piston down on and maintenance of all the the power stroke, a great right parts guarantees re lia portion of the released ener b ility. fuel efficiencv. clean gy is lost out the exhaust in exhaust and throttle respon the form of heat siveness carry. • Purchase 4 quarts (m in.) I oil change. fes SAVE AT THE FOLLOW ING N e W i o "« h l N t l e l st 8 Halsey FAIRVIEW ARCO NE 223rd 8 Halsey S M 6?S J « 5 P • SE I 62nd 8, D iv is io n M A R K ET GRESHAM A M /P M M l BRUCE & BILL'S ARCO W Powel1 af M 'lle r Wood V illag e on the Freew ay SANDY ARCO M t. Hood Hwv ¡n
