Kungaba kuhle futhi kuphole ukusho ukuthi eminyakeni engu-20 edlule, abakwaBMW benza indlela yokuqeda amandla ekilasi le-GT lePorsche, besebenzisa ingqondo yabo kuphela kanye ne-inline-six, kodwa lokho bekungeke kube njalo.Injini ye-S54B32 imane idlale i-fiddle yesibili ku-4.0L V8 ephikiswe kakhulu, kodwa leyo ngenye indaba.Isitatimende esiyiqiniso kakhulu kungaba ukuthi i-S54 imemezele ukuphela kolayini wokuklabalasa, umndeni ohlotshaniswa ne-M50/S50 wama-BMW ayisithupha ahamba ngomugqa.
Kwakuwuhlelo olunwetshiwe olusuka ekuqaliseni okujwayelekile kokushisa okushisayo: engeza i-bore kanye ne-stroke enjinini endala bese wengeza ubuchwepheshe obusha obutholakala ngendlela ye-Double VANOS (BMW ikhulumela i-variable cam phasing kuwo womabili ama-camshaft angaphezulu, akwazi ukulungisa. i-centerline yokuthatha isuka ku-70-130° kanye ne-exhaust centerline isuka ku-83-128°).Engeza iqhubu elincane ekucindezelweni (kuya ku-11.5:1), imizimba ye-throttle ngayinye, abalandeli be-rocker cam abalandela umunwe, i-Double VANOS eshiwo ngaphambilini, kanye nepani likawoyela le-wet-sump lezigaba ezimbili elishiswe ngaphakathi, kanye nalesi sici esiphezulu sesithupha- Isilinda siba yinto ekhetheke kakhulu emuva ngo-2001 nanamuhla.
Ukuba nomphumela othize we-104 horsepower-per-litre kanye ne-stratospheric 8,000-rpm redline akuzange kuzwakale ngaphandle kwezihlalo ezimbili zase-Italy ezinenjini ephakathi nendawo noma amasondo amabili aseJapan.Ubuhle bangempela bale njini bubonakala uma udabula lesi silo.Abagijimi abathathayo abanephrofayili ye-CNC, amagumbi avuthayo agaywe yi-CNC, amavalvu amakhulu engxubevange, iziqondiso zamavalvu ethusi, kanye nokusakazwa kwengxubevange eqinile ehlanzekile konke kubonakala kusekhaya kakhulu enjinini yomjaho kunokuthile okuphuma emgqeni wokukhiqiza.
Lolu hlu lwesici lufundeka njengenganekwane kwabaningi bendabuko abaqopha imihosha, abahlanza Umshini Wokushayela Ophelele.Ngenhlanhla, kithina sonke, i-aftermarket iphakela isidingo salabo bethu abathanda ukukhula.Ama-drifters, abagijimi abahudulayo, kanye nabadlali besikhathi esifushane abahlaselayo bajabulela amakhithi amakhulu e-turbo eyodwa noma inkazimulo ye-centrifugal-blower.Ubuhle bangempela bokuguqulwa kwenjini umvuzo owutholayo, lapho lezi zigayo ezinomthamo ophezulu wevolumu zithola ukulangazelela okungekona okwemvelo kanye nokwesekwa okufanele.Lesi siqeshana sizokuqondisa, okugcina amandla, ngokusebenzisa inqubo yokulungiselela ukuphela okuphezulu kwamandla amakhulu ku-boost.
Ekuqaleni, sizoqaqa futhi sihlole ukulingwa kwethu okubalulekile.I-ounce yokuvimbela ikhilogremu yokwelapha lapha.Ukufaka lolu hlobo lwesikhathi nemali ekulingiseni okungasebenziseki kungaba yiphutha elikhulu.Nakuba i-S54 ingenalo idumela lokuqhekeka, ukuthatha isikhathi sokuhlanza, ukuhlola ngokubukeka, nokuhlola ingcindezi amajakhethi amanzi kuwumsebenzi ofanele.
Ongakwazi kungakulimaza kanye nesikhwama sakho semali.Kubaluleke kakhulu ukuhlola ngokugcwele ukusakaza kwekhanda lesilinda sakho ukuze wenze isiqiniseko sokuthi kufanelekile ukuthola umsebenzi obizayo, onzima ngaphambili.
Uma usukwazi ukushayela umnyombo ukuthi uyasebenza, yisikhathi sokuhlola imigomo yakho.Lesi sakhiwo sibandakanya imoto eyi-E36-chassis drift, esebenzisa i-short-block ye-BMW, yonke ephakelwa ishaja eyi-centrifugal Rotrex.Ukusetshenziswa kwe-stock short-block kudala i-conundrum encane njengoba i-piston yokuqala ingakhululekile ngokwanele ukuze isebenze ngokugcwele i-VVT uma kukhona ama-valve amakhulu asetshenziswa ohlangothini lokuthatha.
Kulesi sakhiwo sikhethe usayizi we-OEM (35mm) ama-valve e-nitrided stainless stainless and 31.5mm (1mm oversize) ama-Inconel exhaust valves;kokubili ku-single keeper groove ukuguqulwa okuhlukahlukene.Kokubili ama-camshafts amakhulu e-VAC Motorsports etholakala ku-Schrick “Forced Induction” kanye namathuba okuqabula i-rev limiter-kissing kumjaho wokushibilika kudinga ukulawulwa okufanele kwamavalvu.Kwasetshenziswa isethi eqinile yamavalvesprings anezinga eliphezulu amabili avela kuSupertech Performance kanye nezigcini ze-titanium ezifanayo ze-featherweight.
I-S54 isebenzisa ingalo yerocker eyehlukile ye-BMW, elandela umunwe ebekwe ku-rocker shaft.Lokhu kunikeza ukusheshisa ukuvulwa kwe-valve kanye nokuphindaphinda kwesilinganiso se-rocker, kodwa, ngokusho kwabanye, kungaba yinto eyinkinga yokugqoka.Sibone impumelelo ekusebenziseni i-WPC Treatment kubalandeli be-OEM rocker, nakuba abanye bengakhetha ukumbozwa kwe-DLC.
Ngezingxenye ezibekiwe, manje sesingakwazi ukusondela ohlwini lwezinqubo esizozihlanganisa esitolo semishini.Noma umgijimi othathayo we-S54 enephrofayili ye-CNC ngokuphelele, kunezindawo ezincane okufanele zithuthukiswe, njengephrofayili yesihlalo kanye nobubanzi bomphimbo wephaketheni.Ichweba le-exhaust liyi-venturi enesivinini esikhulu, ehlukanisiwe, emise okwe-D, ehloselwe ukukhipha amagesi asetshenziswe ngokwemvelo, asetshenziswe kakhulu e-RPM.Umsebenzi wephrofayela, njengokuqondisa umgijimi, uzoba nezinzuzo lapha.Ukusebenzelana okujwayelekile komshini kwe-valve yokuqondisa kusasebenza ekudluliselweni kokushisa, ukuvala ama-valve, nokuphila isikhathi eside.Iziqondiso ze-valve ze-S54s kufanele ziqondiswe njengoba kudingeka.
Ngemuva kokwenza iphrofayela yembobo nokugqoka, sibheke ukuthi simane sisheleleze izimpawu zamathuluzi ezibukhali zamagumbi omlilo.Siphinde siqinisekise ukufana kwe-volumetric nge-burette.Ukunakwa okukhulu kufanele kukhokhwe kuphrofayela yesihlalo, uma kubhekwa ukwanda kosayizi we-valve ku-exhaust.Isihlalo sevalvu sisebenzisa izinjongo ezimbili ezibalulekile: ukucwilisa ukushisa ku-valve ku-valve yejakhethi yamanzi, nokuhlinzeka ngoguquko lwembobo ukondla igumbi elivuthayo emkhathini wethu obalulekile ocindezelwe (futhi ovame ukupholisa kancane).
Iphrofayili yesihlalo ingalandelwa ngokugqwala ngesandla ukuze kuqinisekiswe isixhumi esibonakalayo esihambisana kahle sesihlalo kuya kuvalvu.Uma umsebenzi wamavalvu usuhloliwe futhi uhloliwe, isinyathelo esilandelayo ukuhlola idekhi kanye nokuhlolwa kwe-flange lapho i-PCD ejikelezayo igoqa “ama-six ne-nines” ukuze kuqedelwe okubushelelezi nokuyisicaba.Ukuhlolwa kwengxenye yokugcina kwenzeka kuleli phuzu ngaphambi kokushaya iwasha yezingxenye.Uma sinezingxenye ezihlanzekile nezifanelekile, silungisa ama-valve ebhentshini.Sinamathela ezimisweni zomkhiqizi wekhamera futhi siphetha umhlangano wokugcina ngokuhlola okokugcina.
Ngaphambi kokuthi sisike i-chip eyodwa, sidinga ukubeka futhi silinganise zonke izinjongo zethu.Osayizi bevalvu yokukhipha neyokukhipha 35mm no-31.5mm ngokulandelana.Umgomo wethu wokungenisa okungenani u-85 wamaphesenti aleyo 35mm - noma okungenani ububanzi bomphimbo obungu-29.75mm ephaketheni phakathi kwesihlalo nembobo.Ithagethi ye-exhaust isondele kumaphesenti angama-90 ka-31.5mm - noma 28.35mm - ububanzi bomphimbo.
Abaningi bangase baqaphele ukuthambekela kokunaka okukhokhwa ekuqothulweni kulolu hlelo lokusebenza;ake lokhu kugcizelele ukubaluleka kwayo ekusebenzeni kahle kwevolumu.Khumbula ukuthi onjiniyela baseMunich bachitha isikhathi sabo esiningi bethatha.Sikhweze ikhanda lesilinda emshinini wesihlalo se-valve ye-Serdi futhi sasebenzisa i-convex-radius yokufaka ukuze sithole ububanzi bomphimbo obunzima.Sidinga lesi silinganiso ngaphambi kokuthi sithuthe abagijimi.Kusinikeza ikhono lokuhlanganisa ngesandla izimpawu zomshini noma ama-seams ashiywe yi-rotary throat insert kanye.
Ukusikwa kwesihlalo sokuhlola kusiza ukuhlela iphakethe lomphimbo.Nakuba usayizi womphimbo ophelele usaphikisana, akukho mpikiswano yokuthi ukuthuthukisa isilinganiso sawo kuyisici esibalulekile ekuthuthukiseni ukugeleza okuphelele.
Isigaba esilandelayo asidingi uketshezi lwesakhiwo noma ukubhala.Amachweba okungena abekwe nge-O-ring groove futhi i-exhaust ingaba nkulu ngendlela ekhathuni ukuze ibhale kanye nokufanisa imbobo.Ngakho-ke, isipiliyoni nobuhlakani amakhono amabili acunula isigayo esinesandla esiqinile.
Izindawo ezinkulu zokwenza ama-chip yizinyanga ezimise okwe-D ze-exhaust port.Sigaya, siqondise, futhi senze ihaba isimo sika-D.Akumele kudlule cishe u-2mm wokususwa kwezinto ezindongeni zembobo kufanele kube kwanele ezinhlelweni eziningi ezingaphansi kokwedlulele kuno-1,100 whp.Amaphethelo acijile nezihlukanisi ekuthatheni zithola ukushelela kanye nokukhala kwenkunzi nge-80-grit cartridge roll elula.
Uma sekufakwe iphrofayili, i-exhaust ithola i-80-grit ilandelwa yi-120-grit.Silandela ngokuphambanisa okuncane ukuze siwise phansi ukuthungwa kokulawulwa kwekhabhoni.Igumbi lomlilo lithola i-massaging yokuqedela efanayo ne-exhaust, iwisa izindawo eziphakeme kanye nama-burrs amathuluzi ukuvimbela noma yikuphi ukushisa kwangaphambili noma ukuxhuma okukhanyayo.
Ukuqhubeka kwembobo ye-exhaust ukusuka ku-chippy kuye kokushelelayo.Imbobo ye-exhaust ithola umsebenzi omkhulu kakhulu wokususwa kanye nokubunjwa kabusha kwekhanda le-S54 elihloselwe ukubona i-boost.
Ukufaka imininingwane yezihlalo zamavalvu kungenye inqubo abaningi abayibheka “njengobuciko obumnyama.”Ngempela akuyona into engaphezu kwe-physics ne-geometry.Igumbi le-S54's compact 33cc combustion lisebenzisa ipulaki ye-spark engu-12mm evame ukutholakala ezithuthuthu ukuze ilingane namavalvu ashiwo ngenhla.
Ngokuhambisana netimu ehlangene, kodwa enomoya ophezulu, sikhethe kokubili izinqamuli zezihlalo ezinama-engeli angu-5 kanye ne-radiused, ezitholakala ku-Goodson Machine supply.Bobabili abasiki basinike isihlalo esisebenza kahle esingu-1mm, esingu-45-degree, esihambisana nokusikeka okuguquguquke kahle, ngaphakathi nangaphandle kwesitsha.
Uma usebenzisa amavalvu e-titanium noma usebenzisa amazinga aphezulu kakhulu wamandla amahhashi, kufanele ucabangele isihlalo esinengxube yethusi njenge-Moldstar90 noma efanayo (qaphela umdlavuza, ama-beryllium alloys).Siqedela i-QC ngomsebenzi wokugoba ngesandla, sisebenzisa inhlanganisela ye-clover yakudala, ecolekile ukuze sihlole iringi yethu yokuphazamiseka.Iphinde inikeze ubuso be-valve obuphukile kahle ukuze kugwenywe izinguquko ezinkulu zokugqekeza ku-valve.
Lezi zinqubo zihamba phambili kuphela ngeziqondiso zamavalvu eziyindilinga futhi ezisulwe ngokufanelekile.Lokhu kulungiswa ngendlela edingekayo, ngokuvamile kusukela kumakhilomitha aphakeme kakhulu kanye nama-cores okulungisa ampofu.Igayidi efanelekile yokushintshanisa iyunithi yethusi-manganese etholakala kwaSupertech Performance.Khumbula, kulesi simo, ukugxila kuyinkosi.
Ngaphandle kwezibophelelo ze-flange eziningi ngendlela, siyakwazi ukukhomba ngqo bese sibhodisa iphrofayili yokuthatha kanye nokukhipha ama-flange amaningi ngesandla.Ihlinzeka ngokukhwelana okubushelelezi futhi okuyisicaba kwe-gasket entsha phakathi kwekhanda lesilinda nokuphindaphindeka.Ikhanda lesilinda libe selinyakaziswa futhi linemba lileveli ngaphambi kokuthi sisuse .002-.003 inch per-pass on the Rottler mill with PCD insert.Lokhu kushiya ngemuva kokushelela, i-MLS- noma i-copper-head gasket friendly, maphakathi no-30s (Ra) ukuphela.Amakamelo, unqenqema lwembobo, namaphethelo edekhi yangaphandle akhishwe ngefayela le-rotary le-fat-flute ngaphambi kokukhipha ama-chips.
Umshini ovela phezulu we-Rottler onamathuluzi edayimane e-polycrystalline ushiya isibuko sothingo endaweni yekhanda yesilinda.
Kuleli qophelo, ukwenziwa kwama-chip sekuphelile futhi sekuyisikhathi sokugeza ukukhandleka kwethu nokuswayipha.I-brake clean noma i-solvent - ephakelwa utshani - futhi umoya ocindezelwe ungasusa imfucumfucu eyinkathazo ezindaweni eziqinile.Uma usuzizwa uphephile ngalezo zindawo eziqinile, sekuyisikhathi sokusebenzisa izingcezu zethu ezicwebezelayo ze-aluminium ngokusebenzisa iwasha yezingxenye.
Izinhlobo ezimbili zemishini zihlinzeka ngokuhlanzeka okuphumelelayo kakhulu: amakhabethe ashisayo ane-aqueous high-pressure spray noma i-ultra-sonic submersion.Esimeni sethu ngeyokuqala ukusebenza kwayo kufana nokomshini wokuwasha izitsha omkhulu kuma-steroids.Uma usukhuhle umshini wokuhlanza onengcindezi ephezulu, oshisayo, kanye ne-caustic kancane, izingxenye zokuphonsa zithola ukugezwa kwamanzi aphuma epayipini lemboni kanye nomlomo kuze kube yilapho insipho isiphumile.Lezi zinyathelo zilandelwa umoya ocindezelwe ukomisa noma yimuphi umswakama osele.
Ukuhlanza okuqinile okulandelwa ukuhlolisisa okubonakalayo ngaphambi kokuhlekwa kuyisinyathelo esibalulekile okungafanele sishaywe indiva.
Ikhanda le-S54 libe seliyiswa ebhentshini lokuhlanganisa elihlanzekile elinendawo yetafula yenjoloba ethambile ukuze kuvikelwe ukugaya okucolekileyo ekuklwelweni.Yilapho kokubili incwadi kanye nesipiliyoni kusigcina sisendleleni eqondile nencane ye-mise en endaweni ukunemba.Sincamela ukubeka ama-valve, izihlalo ze-valve-spring, iziphethu, izibambiso, nezingidi zokuguqulela ze-single-groove ezihlelwe ebhentshini njengama-rank formations enkundleni yempi.Lapho yonke into isendaweni yayo, kulula ukubona ukuthi yini, uma kukhona, okushodayo.
Lapha ungabona ama-valve okungena asayizi we-OEM anombala wawo we-nitride, kanye nama-valve okukhipha amandla e-Inconel angaphezu kuka-1mm.Isihluthulelo sezinzuzo ezinkulu kulolu hlelo lokusebenza ukukhipha amagesi asetshenzisiwe ngokushesha nangempumelelo ngangokunokwenzeka.
Ukuhlekwa kwekhanda lesilinda lokusetha ukuphuma kwe-valve kuyisinyathelo esilandelayo;ungase futhi ulungise ama-valve enjini uma kukufanele.Sikuthola kungenangqondo ukudayela i-lash ngaphambi kokuzibophezela kwe-gasket yekhanda elicishiwe.Phakathi nalolu chungechunge lwezinyathelo, sisebenzisa imithombo yokuhlola engasindi esikhundleni seziphethu ezimbaxambili ezinezinga eliphezulu ukuze kube lula ukuhlekisa.Khumbula ukuthi ukwehluleka ukunamathela eziqondisweni ezifanele zokulungisa kungase kukunikeze ama-valve ashile, amandla aphansi, i-valvetrain enomsindo, noma eminye imiphumela ehlazisayo.
I-Schrick Camshafts idinga ukukhishwa kwe-valve okungu-.25mm (.010 inch) kokudonsa kanye ne-exhaust ukuze kusetshenziswe namagay awo.I-BMW ibiza u-.18-.23mm (.007-.009 inch) kanye no-.28-.33mm (.011-.013 inch) imvume, ekuthatheni nasekukhipheni ngokulandelana.Ngokuhambisana netimu yesithuthuthu, i-Wiseco yenza ikhithi kashim engu-8.9mm OD ye-Husqvarna, KTM, ne-Husaberg ephinda ilingane ne-S54: P/N: VSK4.Ama-purists aphuma lapho angase afaneleke kangcono i-BMW P/N: 11340031525. Uma wena (noma umashini wakho) ubusebholeni ngesikhathi sokunqunywa kwesihlalo, ukuqala phakathi nendawo kugqinsi lukashimu kuzokusebenzela kahle.
I-torque efanele kumakepisi ekhamera ibalulekile ekusetheni ukuqhuma kwe-valve ngokunembile.Ukwenza lokhu ngaphandle kwenjini kungenza impilo ibe lula ngokomzimba, futhi uma uhlangabezana nenkinga, akudingi ukuthi ususe ikhanda lesilinda ebhulokhini.
Iziqu zevalvu zithola i-Torco ilube eziqwini zazo futhi ziyaphinde zihlolwe ukuthi azifani yini njengoba zishuthelwa kumagayidi amavalvu.Izihlalo ze-Valvespring zilayishwa phezulu ngaphambi kwemithombo futhi i-compressor ye-pneumatic incike ku-titanium retainer.Lokhu kwenzeka izikhathi ezingu-23 kuze kube yilapho wonke ama-valve, iziphethu, izibambiso, nezingidi sezifakiwe.
Ukufakwa kwe-rocker shaft kungokulandelayo, futhi kufanele kuqashelwe ukuthi ku-S54, i-exhaust rocker shaft inembobo yokugcoba okuhloswe ukuthi inikezwe kugalari yamafutha eyinhloko ekhanda.Ukwehluleka ukuqondisa leyo mbobo ngendlela efanele kuzoholela ku-camshaft eyisicaba nabalandeli.Abalandeli beminwe bayiphuzu lombango kwabanye abajwayele i-inthanethi;Ngizogwema noma yikuphi umbango ngokumane ngiveze ukuthi kunezitayela ezintathu ezamukelekayo zabalandeli beminwe ukuze zisetshenziswe ngamakhamera amakhulu kanye nokusebenza kwe-RPM ephezulu: Abalandeli be-Schrick Performance DLC (P/N: SCH-CF-S54-DLC), i-DLC coated OEM Abalandeli be-BMW (P/N: 11337833259, thintana ne-Calico Coatings) noma i-WPC iphathe abalandeli be-OEM BMW (P/N: 11337833259, xhumana ne-WPC Treatment).
Laba balandeli beminwe abalashwe yi-WPC banziwe nge-microtextured ukuze kugcinwe uwoyela futhi bahlanganiswe nenhlanganisela yobunikazi ye-WPC yezinsimbi zokwelapha phezulu.
Ama-Driven Lubricants enza i-camshaft eqinile, eqinile kanye namafutha okuphakamisa;qiniseka ukuthi usebenzisa lokhu ngokukhululekile kuma-lobes nasebusweni bomlandeli weminwe.Qinisekisa ukuthi ufaka i-lube yokuhlanganisa elula endaweni ene-camshaft namajenali ngaphambi kokufaka amakepisi namantongomane.Ukucaciswa kwetorque nokuhleleka kukuwe, ngoba uma wenza lokhu, kufanele ube nebhukwana elinalolo lwazi.
I-arithmetic ibonise ukuthi sizothola i-2-2.5 psi emuva kusukela ekuguqulweni kokuphefumula kuya ekhanda le-cylinder.Ukulungiselela ukusebenza kahle kwe-volumetric, sibe nezimbambo ezinkulu ezinezimbambo eziyisithupha ezisikwe ngensimbi bese zimbozwa nge-zinc ukumelana ne-oxidation.
Ekugcineni, inzwa ye-MAP ibonise ukukhuphuka okuqinile kwe-3 psi, okwenza i-blower ye-Rotrex ifinyelele phezulu phakathi kwe-14.5 ne-17 psi, kuye ngomkhathi wansuku zonke.Uhambo oluya emshinini wokubala wesivinini we-Rotrex Impeller lubonise ukuthi singase sishayele ngokweqile isigxivizo sethu se-C38-92.Ukuthuthukiswa kokuphefumula okuhambisana ne-pulley enkulu kuveze izinzuzo ze-156whp kanye ne-119 lb-ft ye-torque.
Ziningi izinzuzo zamandla amahhashi ezingatholwa ezinjinini eziningi zokukhiqiza, ngisho nalezo ezithathwa njengeziyinkimbinkimbi kakhulu noma ezibizayo.Ubuciko beqiniso busekutholeni umkhawulo wokuncipha kwembuyiselo ohlelweni ngalunye, ngaphambi kokuhlangana nalolo donga ngesikhathi nemali etshaliwe.Ngethemba ukuthi ngizobuyela kulesi sihloko sokugeleza komoya kanye nokungeniswa ngenkani kumongo wama-six asemgqeni wesimanje esikhathini esizayo esiseduze.Uma leso sikhathi sifika, izoba nedatha eyengeziwe ukwabelana nawe.
Ukuphefumula okungcono kuletha amahhashi amakhulu.Leyo ijika lamandla elithuthuke kakhulu ukuze lithuthuke kancane kanye nekhanda lesilinda elisebenza kahle kakhulu.
Yakha iphephandaba lakho langokwezifiso ngokuqukethwe okuthandayo okuvela ku-Turnology, ngqo ebhokisini lakho lokungenayo, MAHHALA ngokuphelele!
Sithembisa ukuthi ngeke sisebenzise ikheli lakho le-imeyili kunoma yini ngaphandle kwezibuyekezo ezikhethekile ezivela ku-Power Automedia Network.
Isikhathi sokuthumela: Jun-12-2020