Zvingave zvine hunyoro uye zvinotonhorera kutaura kuti makore makumi maviri apfuura, BMW yakagadzira nzira yekupwanya kutonga kwekirasi yePorsche's GT, vachishandisa chete wits yavo uye inline-matanhatu, asi izvo zvingave zvisiri izvo zvachose.Iyo S54B32 injini yakangotamba yechipiri-fiddle kune yakanyanya-yakapikisa 4.0L V8, asi iyo imwe nyaya.Chirevo chechokwadi chakanyanya ndechekuti S54 yakazivisa kupera kwemutsara wekuchema, inoshuvira M50/S50 mhuri yeBMW inline sixes.
Yakanga iri dhizaini yakatambanudzwa kubva kune yakajairwa kupisa-rodding kutanga: wedzera bore uye sitiroko kune yekare injini uye wedzera ichangoburwa tekinoroji muchimiro cheDouble VANOS (BMW inotaura kuchinjika cam phasing pane ese ari maviri epamusoro camshafts, anokwanisa kugadzirisa. iyo inopinza yepakati kubva 70-130 ° uye exhaust centerline kubva 83-128 °).Wedzera diki diki mukudzvanya (kusvika 11.5: 1), miviri yemunhu, munwe-vateveri verocker cam vateveri, yakambotaurwa Double VANOS, uye nechemukati scavenged two-stage wet-sump oil pani, uye ichi chakakwirira-chitanhatu- silinda inova chinhu chakakosha kumashure muna 2001 uye nanhasi.
Kuve nekubuda kwakananga kwe104 horsepower-per-lita uye stratospheric 8,000-rpm redline kwaisanzwika kunze kwepakati-injiniya zvigaro zviviri zveItaly kana mavhiri maviri ekuJapan.Kunaka chaiko kweinjini iyi kunoonekwa kana wabvarura chikara ichi.CNC-profiled intake runners, CNC-milled combustion chambers, hombe alloy valves, bronze valve guides, uye yakachena-dense solid solid alloy casting zvese zvinoratidzika zvakanyanya kumba painjini yemujaho pane chimwe chinhu chakabva pamutsetse wekugadzira.
Iyi rondedzero yemhando inoverenga senge fungidziro kune mazhinji echinyakare canyon-kuveza, Ultimate Driving Machine purists.Neraki, kune isu tose, iyo yekumashure inodyisa kudiwa kweavo vedu vanowedzera rudo.Vanodhiraivha, vanokweva mijaho, uye nguva yekurwisa junkies vanofara mune hombe-turbo kits kana centrifugal-blower kubwinya.Runako chairwo rwekugadzirisa injini ndiwo mubairo waunokohwa, apo aya magiyo epamusoro-volumetric-effective anogamuchira chishuwo chisiri chemusikirwo uye nerutsigiro rwakakodzera.Ichi chidimbu chinokutungamira iwe, yekupedzisira simba fiends, kuburikidza nemaitiro ekugadzirira iyo yepamusoro yekupedzisira kune hombe simba pane boost.
Pakutanga, isu ticha disassemble uye kuongorora yedu core casting.An ounce yekudzivirira ipondo yekurapa pano.Kuisa rudzi urwu rwenguva nemari mukukandira kusingaite kungave kukanganisa kukuru.Nepo iyo S54 isina mukurumbira wekutsemuka, kutora nguva yekuchenesa, kuongorora nekuona, uye kuyedza kumanikidza mabhachi emvura ibasa rakakodzera.
Zvausingazive zvinogona kukukuvadza iwe nechikwama chako.Zvakanyanya kukosha kuti uedze zvizere cylinder head casting yako kuti uone kuti yakakodzera kuwana basa rinodhura, rakasimba riri pamberi.
Kana uchinge wakwanisa kudaidza iyo yakakosha inokwanisa, inguva yekuongorora zvinangwa zvako.Ichi chivakwa chinosanganisira E36-chassis Drift mota, inoshandisa stock BMW pfupi-block, yese inodyiswa necentrifugal Rotrex supercharger.Kushandiswa kwestock short-block kunogadzira diki conundrum sezvo yepakutanga piston isina kusunungurwa zvakakwana kuti izere VVT kushanda kana paine mavharuvhu makuru anoshandiswa padivi rekutora.
Pakuvaka uku takasarudza saizi yeOEM (35mm) mavharuvhu ekupinza nitrided uye 31.5mm (1mm oversize) Inconel exhaust mavharuvhu;zvese zviri mu single keeper groove shanduko dzakasiyana.Ose ari maviri mahombe eVAC Motorsports-sourced Schrick "Forced Induction" camshafts uye mukana we rev limiter-kutsvoda mu skid racer zvinoda kudzora kwakaringana kwevharuvhu.Seti yakasimba yemaviri epamusoro-reti valvesprings kubva kuSupertech Performance pamwe chete nekufananidza featherweight titanium retainers yakashandiswa.
Iyo S54 inoshandisa yakasarudzika-ye-BMW, chigunwe-muteveri rocker ruoko rwakaiswa parocker shaft.Izvi zvinopa kuvhurwa kwevhavha kukwidziridzwa uye rocker ratio kuwanda, asi, maererano nevamwe, inogona kuve inonetsa kupfeka chinhu.Isu takaona budiriro mukushandisa WPC Kurapa pane OEM rocker vateveri, kunyangwe vamwe vangasarudza DLC coating.
Nezvikamu zvakatarwa, isu tinogona ikozvino kusvika kune rondedzero yemaitiro atichavhara muchitoro chemuchina.Kunyangwe iyo yekudyara mumhanyi weS54 yakazara CNC-yakanyorwa, kune nzvimbo diki dzekuvandudza, senge chigaro chimiro uye homwe-huro dhayamita.Chiteshi chekupedza simba ndeyepamusoro-velocity, yakakamurwa, D-shaped venturi, inoitirwa kutsvaira zvakasikirwa, yakakwira-RPM yakashandiswa magasi.Basa reprofile, senge kutwasanudza mumhanyi, rine zvarinowana pano.Iyo yakajairwa mechanical interface yevhavha yekutungamira ichiri kushanda pakupisa kupisa, kuvhara vharafu, uye hupenyu hurefu.Iyo S54s mavharuvhu anotungamira anofanirwa kutariswa sezvinodiwa.
Mushure mekutarisa chiteshi uye kupfeka, isu tinotarisa kungotsvedzerera emakamuri ekupisa 'akapinza maturusi mamaki.Isu tinosimbisawo volumetric kufanana neburette.Kutarisisa kukuru kunofanirwa kubhadharwa kune chigaro profiling, zvichipihwa kuwedzera kwehukuru hwevharuvhu pane exhaust.Chigaro chevharuvhu chinoshandisa zvinangwa zviviri zvakakosha: kunyura kupisa kubva muvharuvhu kupinda mubhachi remvura, uye kupa chiteshi chekuchinja kudyisa kamuri yekupisa yedu yakakosha yakamanikidzwa (uye kazhinji inotonhorera) mhepo.
Iyo profiling yechigaro inogona kuteverwa nekurembera nemaoko kuvimbisa yakanyatso sangana chigaro-kune-vhavha interface.Kana basa revharuvhu rikaongororwa uye nekuyedzwa, nhanho inotevera ndeye deck-milling uye flange yekuongorora uko iyo inotenderera PCD curls "matanhatu nemapfumbamwe" kune yekupedzisira-yakapfava uye yakapfava kupera.Chikamu chekupedzisira chekuongorora chinoitika panguva ino chisati charova zvikamu washer.Kana tangove nezvikamu zvakachena uye zvakakodzera, isu bhenji-kugadzirisa mavharuvhu.Isu tinonamatira kune zvakatemwa zvemugadziri wecam uye tinopedzisa musangano wekupedzisira nekuongorora kwekupedzisira.
Tisati tacheka chipu chimwe chete, tinoda kuisa-kunze uye kuyera zvese zvinangwa zvedu.Saizi yevharuvhu yekupinda uye yekupedza i35mm uye 31.5mm zvakateerana.Chinangwa chedu chekudya chinokwana makumi masere neshanu muzana cheiyo 35mm - kana ingangoita 29.75mm huro dhayamita muhomwe pakati pechigaro nechiteshi.Exhaust target iri pedyo ne90-percent ye31.5mm - kana 28.35mm - huro dhayamita.
Vazhinji vanogona kuona maitiro ekutarisisa akabhadharwa kune kupera mukushandisa uku;regai izvi zvisimbise kukosha kwayo kune volumetric kunyatsoshanda.Ramba uchifunga kuti mainjiniya muMunich vakapedza yakawanda yenguva yavo pakudya.Takaisa musoro wecylinder mumuchina wechigaro cheSerdi valve uye tikashandisa convex-radius kupinza kuwana huro hwakakasharara.Tinoda chiyero ichi tisati tatakura vanomhanya.Inotipa kugona kusanganisa nemaoko mamaki ekugadzira kana seams akasiiwa neinotenderera huro yekuisa zvakare.
Kuchekwa kwechigaro chekuongorora kunobatsira kuronga homwe yepahuro.Kunyange huro yakakwana ichiri kupokana, hapana gakava rekuti kuvandudza reshiyo ndiyo chinhu chakakosha mukuvandudza kuyerera kwese.
Danho rinotevera haridi mvura yekurongeka kana kunyora.Nzvimbo dzekudyira dzakatarwa neO-ring groove uye kupera kungangove kwakakura zvekatuni kune vanyori uye chiteshi mechi.Nekudaro, ruzivo uye kungwara hunyanzvi huviri hunoshatirisa iyo yakatsiga-ruoko kufa-grinder.
Nzvimbo huru dzekugadzira chip ndiyo D-yakaita hafu-mwedzi yechiteshi chekuburitsa.Tinokuya, kutwasanudza, uye kuwedzeredza chimiro cheD.Hapana anopfuura angangoita 2mm yekubvisa zvinhu kubva kumadziro echiteshi kunofanirwa kukwana kune akawanda maapplication asina kunyanyisa kupfuura 1,100 whp.Mipendero yakapinza uye kupatsanura mukutora kunogamuchira kutsetseka uye nzombe-nosing ine nyore 80-grit cartridge roll.
Kana yangodhindwa, iyo inopera inogamuchira 80-grit inoteverwa ne120-grit.Isu tinotevera neimwe mwenje muchinjika-buffing kugogodza pasi mameseji ekudzora kabhoni.Iyo kamuri yekupisa inogamuchira imwechete yekupedzisa-massaging senge yekuburitsa, ichirovera pasi nzvimbo dzakakwirira uye maburrs ekushandisa kudzivirira chero pre-ignition kana glow-plugging.
Kufambira mberi kwechiteshi chekuburitsa kubva pachippy kuenda kunotsvedza.Iyo yekubuditsa chiteshi inowana yakanyanya kubviswa uye kugadziridza basa pamusoro weS54 wakanangana nekuona kukwidziridzwa.
Kunyora zvigaro zvevharuvhu ndeimwe nzira iyo vazhinji vanofunga kuti "unyanzvi hwakasviba."Chokwadi hachisi chinhu chinopfuura fizikisi uye geometry.Iyo S54's compact 33cc conmbustion chamber inoshandisa 12mm spark plug inowanzowanikwa mumidhudhudhu kuti ikwane mavharuvhu ambotaurwa.
Mukuomerera neiyo compact, asi yakakwirira-yemhepo dingindira, isu takasarudza ese ari maviri-makona uye radius-seat cutters, anowanikwa kubva kuGoodson Machine supply.Vese vacheki vakatipa chigaro-chinoshamwaridzana 1mm, 45-dhigirii chigaro, chakabatanidzwa kune akanyatso kuchinjika makucheka, mukati nekubuda mundiro.
Kana uri kushandisa titanium mavharuvhu kana kumhanya akanyanya kukwirira bhiza, unofanira kufunga chigaro chemhangura alloyed se Moldstar90 kana zvakafanana (chenjerera carcinogenic, beryllium alloys).Isu tinopedza QC nebasa remaoko-pamakumbo, tichishandisa yekare fashoni, yakanaka clover komboni kutarisa yedu yekukanganisa mhete.Inopawo yakanyatsotyoka-mukati vharafu kumeso kudzivirira yakakura kupaza-mukati shanduko muvharuvhu lash.
Aya maitiro anongopfuura nematenderedzwa uye akacheneswa mavharuvhu madhairekitori.Izvi zvinogadziriswa pazvinenge zvichidiwa, kazhinji kubva kune yakakwira-mileage uye yakashata kugadzirisa macores.Gwaro rakakodzera rekutsiva icopper-manganese unit inowanikwa kubva kuSupertech Performance.Rangarira, mumamiriro ezvinhu aya, concentricity ndiye mambo.
Pasina manifold flange fasteners munzira, isu tinokwanisa kutwasanuka-kumucheto uye bhodhi chimiro chekutora uye kubudisa maflange akawanda nemaoko.Iyo inopa yakatsetseka uye yakadzikama mating-pamusoro kune nyowani gasket pakati pehumburumbira musoro uye manifold.Musoro wecylinder unobva waita jigged uye nemazvo tisati tabvisa .002-.003 inch per-pass paRottler mill ine PCD inopinza.Izvi zvinosiya kuseri kwakatsetseka, MLS- kana mhangura-musoro gasket inoshamwaridzana, yepakati-30s (Ra) kupera.Makamuri, mapendero echiteshi, uye ekunze kwedhizaini zvakabviswa nemafuta-nyere inotenderera faira isati yafuridzira machipisi kunze.
Muchina weRottler wepamusoro une polycrystalline diamond tooling inosiya girazi-muraraungu kupera pamusoro pesilinda yemusoro.
Panguva ino, kugadzira chip kwaitwa uye yave nguva yekusuka kushanda kwedu uye kutsvaira.Brake yakachena kana inonyungudutsa - inodyiswa neshanga - uye mweya wakatsikirirwa unogona kubvisa marara kubva munzvimbo dzakasimba.Paunenge uchinge wanzwa wakachengeteka nezve idzo nzvimbo dzakasimba, yave nguva yekumhanyisa yedu inopenya zvidimbu zvealuminium kuburikidza nezvikamu washer.
Mhando mbiri dzemakina dzinopa yakanyanya kuchenesa: inopisa aqueous high-pressure spray makabati kana ultra-sonic submersion.Kwatiri ndekwekutanga kuvhiya kwacho kwakafanana nekwemuchina wekugezesa dhishi pane steroids.Kana yakweshwa nedetergent yepamusoro-soro, inopisa, uye zvishoma inokonzeresa, zvinhu zvekukandira zvinogashira kusukurudzwa kwemvura kubva papombi yeindasitiri nemhuno kusvikira sipo yabuda.Aya matanho anoteverwa nemhepo yakamanikidzwa kuomesa chero hunyoro hwasara.
Kucheneswa kwakasimba kunoteverwa nekunyatsoongorora kwekuona pamberi pekunyomba inhanho yakakosha isingafanirwe kufuratirwa.
Musoro weS54 unobva waendeswa kubhenji regungano rakachena rine tafura yerabha yakapfava kudzivirira chigayo kuti chisakwekwe.Apa ndipo apo zvese zvinyorwa uye ruzivo zvinotichengeta munzira yakamanikana uye nhete yemise en place nemazvo.Isu tinosarudza kuisa mavharuvhu, zvigaro zvemavharuvhu-chitubu, zvitubu, zvigadziriso, uye mavharuvhu ekushandura mavhavha akarongwa pabhenji semagadzirirwo enzvimbo panhandare yehondo.Kana chinhu chiri chose chiri panzvimbo yacho, zviri nyore kuona kuti chii, kana chiripo, chisipo.
Pano iwe unogona kuona maOEM-saizi yekudyara mavharuvhu ane nitride coating, pamwe neiyo 1mm yakawedzera Inconel mavharuvhu ekupedza simba.Kiyi yekubudirira kukuru pane iyi chaiyo application kuita kuti gasi rinoshandiswa ribude nekukurumidza uye nemazvo sezvinobvira.
Cylinder head mock-up yekumisikidza valve clearance ndiyo nhanho inotevera;iwe unogona zvakare kugadzirisa mavharuvhu painjini kana ichikukodzera iwe.Isu tinozviwana zvisingaite nerve-wracking kufonera iyo lash mukati pamberi pekuzvipira kweyakadzvanywa musoro gasket.Pakati pematanho aya, tinoshandisa zvitubu zvekutarisa zvakareruka panzvimbo yezvitubu zvepamusoro-soro kuitira kurerutsira kuseka.Rangarira kuti kutadza kuomerera kune kwakakodzera gadziriso nhungamiro inogona kukupa iwe wakatsva mavharuvhu, yakaderera simba, ine ruzha valvetrain, kana zvimwe zvinonyadzisa mhedzisiro.
Schrick Camshafts inodaidzira kuti valve clearance ye .25mm (.010 inch) itore uye kupera kuti ishandiswe nemagayo avo.BMW inodaidzira .18-.23mm (.007-.009 inch) uye .28-.33mm (.011-.013 inch) clearance, pakutora uye exhaust zvichiteerana.Mukuenderana nedingindira remudhudhudhu, Wiseco inogadzira 8.9mm OD shim kit yeHusqvarna, KTM, uye Husaberg inoenderanawo neS54: P/N: VSK4.Iwe unochenesa kunze uko unogona kunge wakanyatsokodzera kune BMW P/N: 11340031525. Kana iwe (kana machinist wako) wanga uri pabhora panguva yekucheka kwechigaro, kutanga pakati pepakati pane shim ukobvu kuchashanda zvakanaka kwauri.
Torque yakakodzera pane cam caps yakakosha pakugadzika valve lash.Kuita izvi kubva mujini kunogona kuita kuti hupenyu huve nyore mumuviri, uye kana wasangana nedambudziko, hazvidi kuti ubvise musoro wecylinder kubva mubhuroka.
Iwo madzinde evharuvhu anogashira Torco kusangana kwelube pamadzinde awo uye iwo, zvakare anotariswa kuenderana kwekukodzera sezvaanotsvedzerwa mumadhairekitori evharuvhu.Zvigaro zveValvespring zvinoremerwa nechepamusoro pamberi pezvitubu uye pneumatic compressor inosendamira mukati metitanium retainer.Izvi zvinoitika ka23 kusvika mavharuvhu ese, zvitubu, maretainer, nemakiyi aiswa.
Rocker shaft yekumisikidza ndiyo inotevera, uye zvinofanirwa kucherechedzwa kuti paS54, iyo exhaust rocker shaft ine gomba rekuzora rinofanirwa kupihwa kubva kuhombe yemafuta mumusoro.Kutadza kurongedza gomba iro nemazvo kunozokonzera flat camshaft nevateveri.Vateveri veminwe inzvimbo yekupokana kune vamwe vanogara painternet;Ini ndichadzivirira kukakavara kupi nekungonongedza kuti kune matatu anogamuchirwa masitaera evateveri vemunwe kuti ashandiswe neakakura camshafts uye yakakwirira-RPM mashandiro: Schrick Performance DLC vateveri (P/N: SCH-CF-S54-DLC), DLC yakavharwa OEM. Vateveri veBMW (P/N: 11337833259, bata Calico Coatings) kana WPC yakabata vateveri veOEM BMW (P/N: 11337833259, bata WPC Kurapwa).
Ava vateveri vemunwe vakabatwa neWPC vane microtextured yekuchengeta mafuta uye vanoiswa pamwe neWPC's proprietary musanganiswa wemasimbi epamusoro-soro.
Driven Lubricants inogadzira yakanakisa, tacky camshaft uye anosimudza girisi;iva nechokwadi chekushandisa izvi zvakasununguka kune lobes uye zviso zvevateveri vemunwe.Ita shuwa kuisa luba yakareruka kune inotakura camshaft nzvimbo nejenari usati waisa kepisi nenzungu.Iyo torque specs uye kurongeka zviri kwauri, nekuti kana uri kuita izvi, unofanirwa kuve nebhuku rine ruzivo irworwo.
Iyo arithmetic yakaratidza kuti taizowana 2-2.5 psi kumashure kubva pakufema kugadziridzwa kuenda kumusoro wecylinder.Mukugadzirira kuwedzera kwevhoriyamu kushanda zvakanaka, takanga tine hombe-mbabvu mikuru mitanhatu akachekwa nesimbi uye ipapo zingi yakavharidzirwa kuti oxidation irambe.
Pakupedzisira, iyo MAP sensor yakaratidza yakasimba 3 psi kuwedzera, zvichiita kuti Rotrex blower isvike pakati pe14.5 ne17 psi, zvichienderana nemhepo yezuva nezuva.Nzendo kuenda kuRotrex Impeller speed calculator yakaratidza kuti tinogona kunge tiri kunyanya kudarika C38-92 yedu impeller.Iko kunatsiridza kufema kwakabatana neiyo huru pulley kwakaburitsa mibairo ye156whp uye 119 lb-ft ye torque.
Kune akawanda mabhiza anowanikwa muinjini dzekugadzira, kunyangwe idzo dzinonzi dzakaomarara kana kudhura.Hunyanzvi hwechokwadi huri mukutsvaga chikumbaridzo chekudzikira kwekudzoka muhurongwa hwega hwega, usati wasangana nemudhuri iwoyo nenguva yakaiswa mari.Ndinovimba kudzoka kune iyi nyaya yekuyerera kwemhepo uye nekumanikidzwa induction mumamiriro emazuva ano inline sixes munguva pfupi iri kutevera.Kana iyo nguva yasvika, inenge iine data rakawanda rekugovana newe.
Kufema kuri nani kunounza mabhiza makuru.Ndiyo yakanyatsogadziridzwa simba curve yekuwedzera zvishoma uye yakawanda inoshanda silinda musoro.
Vaka yako wega tsamba yenhau ine izvo zvaunoda kubva kuTurnology, zvakananga kubhokisi rako rekutumira, MAHARA!
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Nguva yekutumira: Jun-12-2020