Sonke sagcina sithanda uhlobo oluthile lomculo, kodwa kuma-petrolheads kungaba ukukhetha okukhohlisayo uma lowo mculo ofanayo ukhiqizwa izinjini zezakhiwo ezahlukene.
Yinye into eqinisekile: i Ibhulokhi Encane V8 I-Chevy's isineminyaka engu-60 icula futhi isazoqhubeka nokucula, kanti i-ZZ6 yakamuva kube eyokugcina ehayizayo, ememezayo ohlwini lozalo olude.
Kodwa ngaphambi kokuba siye emisuka, kufanele sikushiyele ezinye izinto, ukuze ukwazi ukuqonda kahle umehluko phakathi kwe-V8 “Big Block” kanye ne-V8 “Small Block” , noma “Ibhulokhi Enkulu” kanye “Nebhulokhi Encane”.
I-Small Block yazalwa kanjani futhi yini umehluko?
Ngaphambi kokuvela kwe-Small Block V8, ngo-1955, isithembiso se-V8 sabakhi abaningi baseMelika senziwa yi-Big Blocks. Asifuni ukuyinweba kakhulu, kodwa umehluko omkhulu yiwo ophawuleka kakhulu: amabhulokhi amakhulu makhulu ngokomzimba kunamabhulokhi amancane kokubili ngobude nobubanzi, okungasho ukuthi anokususwa okuningi, empeleni kungenzeka. ukuze ube nokugudluzwa okufanayo namabhulokhi amabili.
Amabhulokhi amakhulu anezinduku zokuxhuma ezinde, athanda ukushaywa kwamapiston, ngaleyo ndlela akhiqize i-torque eyengeziwe, kodwa engakwazi ukuzungezisa okuphezulu, futhi ukushuba kwensimbi phakathi kwezindonga zamasilinda nakho kukhulu. Ngakolunye uhlangothi, amakhanda phakathi kwalawa mabhulokhi anezakhiwo ezahlukene, kokubili kuma-engeli ama-valve kanye naseziteshini zokupholisa ezihlukene nezokugcoba. Njengamabhuloki ngokwawo, endabeni yamashaneli okugcoba, ngaphezu kobukhulu, amabhulokhi ngokwawo anama-engeli ahlukene kokubili ekuvuleni kuka-V kanye nama-engeli kanye nokuhlukanisa ama-impeller aqinile/amanzi anyakazisa iziqu ze-valve. etholakala ekhanda.
Onjiniyela bakwaChevy babazi ukuthi amaBig Blocks anendawo yawo egcinelwe izimoto ezinkulu ngakho-ke kwakunesidingo sokudala okuthile okulula, okunamandla afanayo, kodwa okukwazi ukukhiqiza amandla engeziwe ngama-revs aphakeme kakhulu, ngaleyo ndlela kuzalwe i-Small Block.
Kungaleso sikhathi ngo-1955 lapho kwazalwa khona i-Small Block yokuqala yakwaChevy, i 265 (kubhekiselwa kumthamo wayo ngamayintshi ayi-cubic), i-4.3 l V8 encane enamandla asuka ku-162 hp kuya ku-180 hp, ene-pushrod architecture kanye ne-OHV (i-valve ephezulu). Bekukuhle ukuvala indawo yokugudluza okufanayo kodwa ngamabhuloki amasilinda ayisithupha asemgqeni, abenomthambo omncane wezemidlalo futhi abegxile kakhulu ekongeni uphethiloli.
walandela i isiqephu 283 4.6 l, le V8 izoba nesibopho sokunika amandla imithambo yezemidlalo yakwaChevy, futhi eyokuqala ukuhlanganisa efekthri isistimu yomjovo womshini we-Rochester - lolu hlelo oluguquguqukayo luzuze i-hp eyi-1 cubic inch ngayinye.
Inganekwane 327 kwaba ukuvela kweSmall Block 265 esivele sidumile. Le 5.3 l V8 izoqopha umlando enguqulweni yayo ye-L-84, ezofika izohlomisa i-Corvette C2 Stingray. Nakulokhu futhi ukuvela komjovo owenziwe ngomshini nguRochester, kuzoholela ibhulokhi ye-L-84 ukuthi idonse u-1,146 hp nge-cubic inch ngayinye, irekhodi elaphulwa kuphela ngo-2001 ngesizukulwane sesi-3 se-LS6.
Sidlulela nasenganekwaneni Ibhulokhi Encane 302 , le 5.0 l V8 izomaka isizukulwane, njengoba izimpande zomklamo wayo zivela ngokuqondile emikhawulweni yomncintiswano we-Trans Am, yi-SCCA (Sports Car Club of America), lapho amabhulokhi amakhulu kunama-cubic amayintshi angu-305 ayengavunyelwe. Esikhathini esihle kakhulu salo mncintiswano, umbango phakathi kweCamaro Z/28 kanye ne-Mustang Boss 302 kwaphikiswana ngawo ngokujika nokujika futhi ekuhambeni, i-290 hp abaningi ababethi empeleni yayisondele kakhulu ku-350, yayiyinjabulo abashayeli bezindiza.
Inkinga kawoyela kanye nokuthuthuka kwezobuchwepheshe njengesixazululo
Ngama-70s, inkinga kawoyela kanye nenkathi ye-Smog (ukungcoliswa komoya okubangelwa ukukhishwa kwezimoto, okubonakala ngenkungu eyakhiwe amagesi angcolisayo), kwakungabulala i-Small Block yakwa-Chevy, kodwa akunjalo. Onjiniyela bakwaChevrolet banikezwe umsebenzi wakwaHerculean wokuthola ibhulokhi engu-5.7-litre 350, i-LT1, ekwazi ukuhlangabezana nezindinganiso zemvelo kuyilapho inesifiso sokudla esilinganiswa kakhudlwana. Noma kunjalo i-360 hp yayo ikhanya. Kodwa-ke, ngokufa kwe-Muscle Cars, imisipha ehlanzekile yaseMelika izoba namandla ayishumi amnyama, enziwe i-L-82. Le Small Block 350 kakade inama-hp angu-200 kuphela, okwenza i-Corvette imoto enezinzuzo ezingatheni.
Izikhathi zishintshile futhi ubunjiniyela sebushintshile, yilapho-ke Ibhulokhi Encane engu-350 L-98 . umjovo we-elekthronikhi uzokwenza kube nokwenzeka ukubuyisela okunye ukusebenza okwalahlwa uCorvette noCamaro ngesikhathi seSmog. Amandla ayengenamandla, kwase kuzuziwe kuphela phakathi kuka-15 no-50 hp, kodwa ayengaphezu kokwanele ukuba iCorvette idlule ngamahloni ku-240 km/h ngo-1985.
Eceleni kwe-Factory Small Blocks, uphiko lwe-GM Performance luhlale lunikeza izixazululo zamaphrojekthi ahlukahlukene adingwa Umlandeli kaGM. THE ZZ4 , okungeyesine esizukulwaneni sokusebenza okuphezulu I-Small Block 350, izoba yisimo sobuciko ngo-1996 kulokhu kufuduka okuyinganekwane okungu-5.7 l kwe-Chevrolet.
Isahluko esilandelayo: i-LS
Uhlu lozalo lwe-Chevrolet lwe-LS-generation Small Blocks lwaqala ngo-1997. Cishe uzwile ngabo, noma ngabe ukusebenza kwabo, ukufinyeleleka, noma ukushintshwa okwenziwa kalula uma kubhekwa ubukhulu bawo obuminyene kakhulu. Kusukela ku-5.7 l LS1/LS6 engokomfanekiso kuya ku-7.0 l LS7 enkulu, amabhulokhi e-LS aphawule isizukulwane esilangazelela amandla, ukwethembeka nokusetshenziswa okusesilinganisweni, ngezindleko eziphansi kunomncintiswano.
Kwabashisekeli bamandla esikole esidala, i-GM Performance isanikeza, ngomthamo wesilinda wenganekwane ongu-7.4 l, ibhulokhi ye-LSX-R 454. Ngo-1970 i-mythical 454 LS6 kwakuyi-V8 Big Block eyayihlomisa i-Chevelle SS, enamandla angu-450. hp. Namuhla kungenzeka ukukhipha ngendlela ye-N/A (okufiswa ngokwemvelo) kusuka ku-LSX-R ngaphezu kuka-600 hp.
ZZ6, okwakamuva
Siqede ukuvakasha nge-Small Blocks yakwa-Chevrolet ngenjini yakamuva evela kwa-GM Performance, entsha ZZ6 . Yebo, isiko liyaqhubeka nale 5.7 l V8 Small Block, futhi ukugubha le minyaka engu-60, le ZZ6 ingaphezu kokuba enamandla kunawo wonke ama-5.7 l eyake yaba khona - 405 hp kanye no-549 Nm ekhishwe ku-quad body carb yakudala - la mandla angu-100% e-analog ancike kumakhanda e-LS V8 aklanywe ngokukhethekile. Inhloso bekuwukukhuphula isivinini sokugeleza komoya, nge-camshaft enolaka kakhulu kodwa ngokuhlonipha i-pushrod-type camshaft, isethi yamavalvu asenziwe kabusha, ama-crankshaft afojiwe namapiston e-aluminium anokuqukethwe kwe-silicon ephezulu.
Yize isizukulwane se-LS sizoyidedela i-LT, kungenxa yobunjiniyela obufana nalona lapho sifisa eminye iminyaka engu-60 ye-Small Blocks V8 esiwine ngayo iChevrolet. "Isikole Esidala" noma sanamuhla, IMPILO ende KUYA KU-V8.
I-Chevy Small Block 302