Si loo kordhiyo awooda faraska iyo barakaca Corvette ZR-1, Phil Wasinger waxa uu bilaabay samaynta mishiinkiisa markii uu ka helay mishiinka LT5 ee Craigslist sanadkii 2014. Bal eeg waxa ku dhacay mashruucan lixda sano ah.
Naqshadaynta gaarka ah iyo wax soo saarka xaddidan ee 1990-1995 ZR-1 Corvettes, matoorka LT5 ee si dabiici ah loo rabey kuma raaxaysan waxqabadka suuqa dambe sida Chevrolet, Chrysler iyo Ford matoorada kale ee wax soo saarka badan. Si kastaba ha ahaatee, tani ma joojin. Phil Wasinger wuxuu dib u dhisay mishiinkiisii LT5 ee 1994-kii ZR-1 Corvette.
Ujeedada ugu weyn ee mishiinka LT5 waxay ahayd in markii Lotus Engineering (oo ay leedahay GM wakhtigaas) ay naqshadaysay LT5, GM waxay ku adkaysatay inay isticmaalaan isla godka daloolka dhululubada, dhererka sagxada dhululubada, iyo crankshaft dhexroorka daloolka weyn sida SB Chevy, in kasta oo haddii kale, waa design engine gebi ahaanba ka duwan, marka laga reebo shaabadda saliidda dambe ee crankshaft, ma jiraan qaybo caadi ah oo u dhexeeya. Markaad ka baxayso warshadda, baloogga LT5 ee dhululubo wuxuu qaadanayaa naqshad sagxad furan, iyo baloogga hoose ee dhululubada ayaa la qodayaa si uu u dejiyo dahaarka 4.173 OD ee dahaarka aluminiumka.
Dib u dhiska mishiinka Wasinger wuxuu bilaabmay 2014, markii uu ka helay mishiinka LT5 ee Craigslist.
"Waxaan iibsaday 1994 Corvette ZR-1 ee 2007 waxaanan ku cusboonaysiiyay mishiinka wax ka beddelka caadiga ah ee ku habboon matooradan gaarka ah," ayuu yiri Wasinger. "Tani waxaa ku jira madaxyada tuubooyinka dhaadheer, qiiqa dib u soo celinta waxqabadka, qaadashada dekeda, iyo jajabyada hagaajinta waxqabadka. 350-ka cidd, mishiinnada kaydka badankoodu si fiican bay u shaqeeyaan, waxay soo saaraan qiyaastii 485 hooras, si fududna waxay u noqdaan 7,200 rpm. Si kastaba ha ahaatee, waxaan runtii rabaa inaan arko waxa naqshadeynta mishiinka DOHC LT5 samayn karo iyadoo lagu darayo barokaca, madaxyada dhululubada, iyo kamaradaha waxqabadka caadiga ah. Tani waxay bilawday safarkaygii xiisaha lahaa ee 6-da sano ahaa ee 427 cid LT5."
Marka la eego soo saarista mishiinka, Phil ma aha DIYer caadi ah. Inta badan xirfaddiisa, waxa uu u soo shaqeeyay shirkadaha waaweyn ee matoorada naaftada ee Jarmalka ee MTU Friedrichshafen iyo MAN Augsburg, isaga oo hogaaminaya hawlahooda Maraykanka. Ciidamada Badda Mareykanka, Ilaalada Xeebaha Mareykanka iyo Shirkadda Maraakiibta Ganacsiga ee Calanka Mareykanka ayaa ah macaamiishiisa ugu weyn.
Si kastaba ha ahaatee, si ka duwan shaqadii uu ku soo qabtay xirfadiisa, dhismahan LT5 waa mashruuc hiwaayad shakhsi ah, oo inta badan lagu sameeyo garaashka qoyska Phil. Shaqada mishiinada iyo dheelitirka waxa lagu sameeyay aqoon-is-weydaarsiga mishiinada mishiinka matoorka ee u dhow magaaladiisa Fairfax, Virginia, ee waqooyiga Virginia. Ugu horeyn, Phil wuu ogaa inuu rabo faras badan iyo barokac badan.
"Hadafkeennu waa inaan bixinno koronto 650 ah oo siman oo la isku halayn karo oo loogu talagalay waddada iyo safarka," Vasinger ayaa yidhi. "Naqshadaynta gaarka ah ee LT5 awgeed, shafka istaroogga waa in lagu farsameeyaa meel bannaan. Shaftadu waxay leedahay tiro badan oo ceelal gudaha ah oo ah kanaalka kaliya ee qaybinta saliidda ee xajinta ugu weyn iyo isku xirka usha. Nasiib wanaag, waxaan ka imid qof Texas jooga Mudanuhu wuxuu helay billet bir ah oo aan la isticmaalin oo ah 4.00 crankshaft. Markii hore wuxuu u soo iibiyay nooca LT5, laakiin wuu ku guuldareystay inuu garto.
"Si loo isticmaalo 4.000-strock shaft si loo gaaro bartilmaameedka 427 cidd, waa in boodhka dhululubada laga kordhiyaa 3.90 4.125 taas oo u baahan in la balaadhiyo dalooliyaha dhululubada. Taas awgeed, waxaan u jeestay Pete Polatsidis, khabiir ku takhasusay mishiinka LT5 ee Chicago, Waxa uu sameeyay beddelka birta birta ah ee birta ah ee xidhan iyo Darton Sleeves ee mishiinka LT5.
Qeybta dhululubada LT5 waxaa loogu talagalay in lagu isticmaalo buushyada aluminium 99mm iyo pistons ay soo saartay MAHLE. Dusha sare ee dahaarka waxaa lagu dahaadhay Nikasil si ay u bixiso dusha aad u adkaysanaysa xidhashada. Habayntu waa naqshad sagxad furan oo leh qaybta hoose ee xayndaabku si liidata loogu rakibay daloolka qaataha oo lagu rakibay xagga hoose ee xannibaadda.
Si loo gaaro godka 4.125w ee Phil uu rabay, waxaa lagama maarmaan noqotay in la isticmaalo dahaadh bir ah oo si gaar ah wax looga beddelay oo uu asal ahaan soo saaray Darton Sleeves oo uu hagaajiyay Pete Polatsidis si loo isticmaalo naqshadaynta sagxada xidhan.
"Xiddigan xiran ee xiran, dhexroorka gudaha ee dhululubada ayaa si badbaado leh loogu kordhin karaa 4.125, faa'iidada kale ayaa ah in ay aad u degan tahay dhululubada," ayuu yidhi.
Kadib markii uu fahmay shafka iyo barakicinta mishiinka, Phil waxa uu dareenkiisa u jeediyay qaybaha kale ee gudaha, sida 6-inch billet xidha ulo oo midkastaa miisaankiisu yahay 605 garaam, oo lagu lamaaniyay bistoonada aluminiumka ee dheemanka ah ee la been abuuray ee leh dahaarka goonnada iyo biinanka.
"Piston-ku wuxuu leeyahay saamiga isku-buufinta ee 12: 1, iyo pin-ka-dhaafka ah iyo dahaarka goonnada ayaa si gaar ah loogu talagalay in lagu yareeyo buuqa piston-ka qabow," ayuu yiri Wasinger. "Sidoo kale waxaan isticmaalay Total Seal piston rings - giraanta molybdenum ee 1.5mm malleable, koofiyad 1.5mm ah oo maroojis ah oo giraanta labaad ah, iyo 3mm giraanta xakamaynta saliidda."
Nooca LT5 wuxuu sidoo kale helay Calico-dahaarka-OEM ee tamarta ugu weyn iyo 2.1 dahaarka leh ee Clevite 77 ee ushii. Nadiifinta joornaalka ee u dhexeeya usha usha iyo xajinta ugu weyn ayaa lagu rakibay 0.0025 .
Markay timaaddo madaxyada dhululubada iyo tareenada waalka, Phil wuxuu tilmaamay in qolka gubanaya ee afar-valve ee LT5 loo qorsheeyay inuu noqdo mid aad uga soo horjeeda garaaca, taasoo u oggolaanaysa saamiga cadaadiska sare in la isticmaalo marka hawada la shubayo. Si loo kordhiyo habayntiisa, madaxa dhululubada si buuxda ayaa loo beeray oo la tijaabiyay socodka. Meesha hawada laga soo galo ayaa la furay ilaa 37 mm, sidoo kale baaquli hawada soo gelisa waa la weynaaday.
"Valalka qaadashada 39mm ee asalka ahaa waxaa lagu beddelay Ferrea's 42mm birta aan-ka-qaadista lahayn oo leh jir 8mm," ayuu yidhi. "Kursiga valve-ka-qaadista sidoo kale waa la ballaariyay si uu si buuxda uga faa'iidaysto waalka weyn ee qaadashada. Waxa kale oo aan isticmaalay ilo Ferrea iyo kaydiyeyaal. "
Si habka waalka looga dhigo mid si sax ah u shaqeeyo, Wasinger wuxuu ka doortay kamarad billet camshaft ah oo ka timid Jones Cam Design. Marka laga soo tago shaqadiisa, Phil wuxuu sheegay in isku-dheellitirka qaybaha wareega iyo shaqada waalka madaxa ee caaga ah uu sameeyay gudaha Lloyd Lovelace oo ka tirsan Mashiinka Gawaarida Gaarka ah ee Lorton, Virginia. Dhammaystirka farsamaynta dynamometerka baabuurta waxa samaysay Haibeck Automotive Technology ee Addison, Illinois.
Ka dib markii LT5 si buuxda loo soo ururiyay oo la hagaajiyay, Wasinger wuxuu sheegay inuu helay 650 hooras oo uu rajeynayay. Hadda, kan 1994 ZR-1 Corvette wuxuu ku soo laabtay waddada.
Toddobaadkan mishiinka waxaa kafaala qaaday PennGrade Motor Oil, Elring - Das Original iyo Scat Crankshafts. Haddii aad leedahay mishiin aad rabto inaad ku iftiimiso taxanahan, fadlan u soo dir emayl [email protected] tafatiraha Engine Builder Greg Jones
Waqtiga boostada: Seb-13-2021
