Ukuze andise amandla ehhashi kanye nokugudluzwa kwe-Corvette ZR-1 yakhe, u-Phil Wasinger waqala ukukhiqiza injini yakhe lapho ethola injini esetshenzisiwe ye-LT5 ku-Craigslist ngo-2014. Bheka ukuthi kwenzekeni kule phrojekthi yeminyaka eyisithupha.
Ngenxa yomklamo oyingqayizivele kanye nokukhiqizwa okulinganiselwe kwe-1990-1995 ZR-1 Corvettes, injini ye-LT5 eyayilangazelele ngokwemvelo ayizange ikujabulele ukusebenza ngemuva kwemakethe njengeChevrolet, Chrysler nezinye izinjini zakwaFord ezikhiqizwe ngobuningi. Nokho, lokhu akuzange kumise. UPhil Wasinger wakha kabusha injini yakhe ye-LT5 ku-1994 ZR-1 Corvette yakhe.
Inhloso enkulu yenjini ye-LT5 kwakuwukuthi ngenkathi i-Lotus Engineering (eyayiphethwe yi-GM ngaleso sikhathi) iklama i-LT5, i-GM yagcizelela ukuthi isebenzise isikhala esifanayo sembobo yesilinda, ukuphakama kwedekhi yesilinda, kanye nobubanzi bembobo eyinhloko ye-crankshaft njenge-SB Chevy, nakuba kungenjalo, Kuyi-design yenjini ehluke ngokuphelele, ngaphandle kwe-crankshaft yangemuva yamafutha seal, azikho izingxenye ezivamile phakathi kwazo. Lapho usuka efekthri, ibhulokhi yesilinda ye-LT5 yamukela umklamo ovulekile wedekhi, futhi ibhulokhi yesilinda ephansi iyabholwa ukuze kungene ulayini we-aluminium wesinyathelo esingu-4.173 OD.
Ukwakhiwa kabusha kwenjini kaWasinger kwaqala ngo-2014, lapho ethola injini ye-LT5 esetshenzisiwe ku-Craigslist.
“Ngathenga i-Corvette ZR-1 ka-1994 ngo-2007 ngase ngithuthukisa injini ngokushintsha okujwayelekile okuhambisana nalezi zinjini ezihlukile,” kusho uWasinger. “Lokhu kuhlanganisa izihloko zamapayipi amade, ukusebenza kwe-catback exhaust, ukungena echwebeni, nama-chips okushuna ukusebenza. Ku-350 cid, izinjini eziningi zesitoko zisebenza kahle, zikhipha amandla amahhashi angama-485, futhi zijika kalula ku-7,200 rpm. Kodwa-ke, ngifuna ngempela Ukubona ukuthi umklamo wenjini ye-DOHC LT5 ungenzani ngokungeza ukususwa, amakhanda amasilinda, namakhamera okusebenza ngokwezifiso. Lokhu kuqale uhambo lwami lweminyaka eyi-6 lwe-427 cid LT5.”
Mayelana nokukhiqizwa kwenjini, i-Phil akuyona i-DIYer evamile. Esikhathini esiningi somsebenzi wakhe, usebenzele abakhiqizi abakhulu benjini kadizili baseJalimane i-MTU Friedrichshafen kanye ne-MAN Augsburg, ehola ukusebenza kwabo e-United States. I-US Navy, i-US Coast Guard kanye ne-American Flag Commercial Shipping Company bangamakhasimende akhe amakhulu.
Nokho, ngokungafani nomsebenzi awenzile emsebenzini wakhe, lokhu kwakhiwa kwe-LT5 kuwumsebenzi womuntu siqu wokuzilibazisa, owenziwa ikakhulukazi egaraji lomndeni kaPhil. Umsebenzi womshini kanye nebhalansi kwenziwa eshabhu yemishini yenjini yangakubo eduze nedolobha lakubo e-Fairfax, eVirginia, enyakatho yeVirginia. Okokuqala, uPhil wayazi ukuthi ufuna amandla ehhashi amaningi kanye nokufuduka okwengeziwe.
"Inhloso yethu ukuhlinzeka ngamahhashi angu-650 abushelelezi futhi anokwethenjelwa emgwaqeni nasekuhambeni ngomkhumbi," kusho uVasinger. “Ngenxa yedizayini eyingqayizivele ye-LT5, i-stroke crankshaft kumele yenziwe ngomshini kusukela ekungenalutho. I-crankshaft inenani elikhulu lama-boreholes angaphakathi njengowodwa umgudu wokusabalalisa uwoyela wokuthwala okuyinhloko kanye nenduku yokuxhuma. Ngenhlanhla, ngangivela kumuntu waseTexas Umnumzane wathola ibhilethi yensimbi engasetshenzisiwe engu-4.00˝ crankshaft. Ekuqaleni wayithenga ngenguqulo ye-LT5, kodwa wehluleka ukuyibona.
“Ukuze usebenzise i-4.000˝ stroke crankshaft ukufinyelela umgomo ongu-427 cid, ibhobo yesilinda kufanele ikhuliswe isuka ku-3.900˝ iye ku-4.125˝, okudinga ukunwetshwa kwebhore esamukela isilinda. Ngalokhu, ngaphendukela ku-Pete Polatsidis, uchwepheshe wenjini ye-LT5 e-Chicago, Wakha ukuguqulwa kwe-ductile iron bushing yedekhi evaliwe kanye ne-Darton Sleeves yenjini ye-LT5.”
Ibhulokhi yesilinda ye-LT5 yakhelwe ukusebenzisa ama-99mm aluminium bushings namapiston akhiqizwa ngu-MAHLE. Ingaphakathi le-lining limbozwe nge-Nikasil ukuze linikeze indawo ehlala isikhathi eside engagugi. Ukucushwa kuwumklamo wedekhi evulekile enengxenye engezansi yelayini efakwe ngokushelela embotsheni yomamukeli efakwe ngaphansi kwebhulokhi.
Ukuze kuzuzwe imbobo engu-4.125˝ uPhil ayeyifuna, kwakudingeka ukuthi kusetshenziswe uhlaka lwensimbi oluguquliwe ngokukhethekile olwakhiqizwa i-Darton Sleeves futhi lwathuthukiswa nguPete Polatsidis ukuze kusetshenziswe idizayini yedekhi evaliwe.
“Ngale liner yedekhi evaliwe, i-diameter yangaphakathi yesilinda ingakhushulwa ngokuphepha ibe ngu-4.125˝, futhi enye inzuzo ukuthi izinze kakhulu kusilinda,” esho.
Ngemva kokuqonda i-crankshaft kanye nokugudluzwa kwenjini, u-Phil wabhekisa ukunaka kwakhe kwezinye izingxenye zangaphakathi, njengezinduku zokuxhuma ze-billet engu-6-intshi ngayinye enesisindo esingamagremu angu-605, abhangqwe namapiston angokwezifiso e-aluminium enziwe ngedayimane anezingubo zesiketi nezikhonkwane ze-offset.
"I-piston ine-compression ratio engu-12:1, kanti iphinikhodi ye-offset nesiketi siklanyelwe ukwehlisa umsindo wepiston obandayo," kusho u-Wasinger. “Ngaphinda ngasebenzisa izindandatho ze-Total Seal piston—indandatho ethambile engu-1.5mm ye-molybdenum top, iringi yesibili ethambile yekhoni engu-1.5mm, kanye neringi yokulawula uwoyela engu-3mm.”
Inguqulo ye-LT5 iphinde yathola i-Calico coated bearings-OEM kugesi oyinhloko futhi i-2.1˝ yamboza ama-Clevite 77 amabheringi entongeni. Ukuvunyelwa kwejenali phakathi kokuthwala induku nokuthwala okuyinhloko kufakwe kokuthi 0.0025˝.
Uma kukhulunywa ngamakhanda amasilinda nezitimela zamavalvu, uPhil waveza ukuthi i-LT5 enamavalvu amane ekhanda legumbi elivuthayo iklanyelwe ukuthi imelene kakhulu nokungqongqoza, okuvumela ukucindezelwa okuphezulu ukuthi kusetshenziswe lapho kuphampulwa umoya. Ukuze kwandiswe ukusetha kwakhe, ikhanda lesilinda latshalwa kabusha ngokuphelele futhi lahlolwa ukugeleza. I-air inlet ivulwa kuze kufike ku-37 mm, futhi isitsha sokungenisa umoya siyakhuliswa.
“Ivalvu yokuqala engu-39mm yathathelwa indawo ivelufa kaFerrea engu-42mm yensimbi engagqwali enesiqu esingu-8mm,” esho. “Isihlalo sevalvu yokungena sinwetshiwe ukuze sikwazi ukusebenzisa i-valve enkulu. Ngasebenzisa nemithombo yamanzi yaseFerrea.”
Ukuze enze umshini we-valve usebenze kahle, u-Wasinger wakhetha i-camshaft ye-billet yangokwezifiso ku-Jones Cam Design. Ngaphezu komsebenzi wakhe siqu, uPhil uthe umsebenzi ojikelezayo wokulinganisa kanye nomsebenzi wamavalvu ekhanda wesilinda wenziwa endaweni nguLloyd Lovelace woMshini Wezimoto Ojwayelekile eLorton, eVirginia. Ifayineli yokushunwa kwe-dynamometer yezimoto yenziwe ngabakwa-Haibeck Automotive Technology e-Addison, e-Illinois.
Ngemuva kokuthi i-LT5 isiqoqwe ngokugcwele futhi yalungiswa, u-Wasinger uthe uthole amandla angu-650 amahhashi ayenethemba. Manje, le-ZR-1 Corvette ka-1994 isibuyele emgwaqeni.
Kuleli sonto le njini ibixhaswe ngabakwaPennGrade Motor Oil, Elring – Das Original kanye neScat Crankshafts. Uma unenjini ofuna ukuyigqamisa kulolu chungechunge, sicela uthumele i-imeyili kokuthi [i-imeyili ivikelwe] Umhleli we-Engine Builder uGreg Jones
Isikhathi sokuthumela: Sep-13-2021
