I mea e hoʻonui ai i ka horsepower a me ka neʻe ʻana o kāna Corvette ZR-1, ua hoʻomaka ʻo Phil Wasinger i kāna hana ʻenekini i ka wā i loaʻa ai iā ia kahi mīkini LT5 i hoʻohana ʻia ma Craigslist ma 2014. E nānā i ka mea i hana ʻia i kēia papahana ʻeono makahiki.
Ma muli o ke ʻano hoʻolālā kūʻokoʻa a me ka hana palena ʻana o nā 1990-1995 ZR-1 Corvettes, ʻaʻole i hauʻoli ka ʻenekini LT5 i hana ʻia ma hope o ka hana e like me Chevrolet, Chrysler a me Ford nā ʻenekini i hana nui ʻia. Akā naʻe, ʻaʻole i pau kēia. Ua kūkulu hou ʻo Phil Wasinger i kāna ʻenekini LT5 i kāna 1994 ZR-1 Corvette.
ʻO ke kumu nui o ka ʻenekini LT5, ʻo ia ka manawa i hoʻolālā ai ʻo Lotus Engineering (no GM ia manawa) i ka LT5, koi ʻo GM e hoʻohana lākou i ka hoʻohana ʻana i ka hoʻokaʻawale ʻana o ka lua cylinder, ke kiʻekiʻe o ka pahu pahu pahu pahu, a me ka crankshaft nui e like me SB Chevy, ʻoiai inā ʻaʻole, he ʻano hoʻolālā engine ʻokoʻa loa ia, koe wale ka crankshaft hope aila sila, ʻaʻohe ʻāpana maʻamau ma waena o lākou. I ka haʻalele ʻana i ka hale hana, hoʻohana ka LT5 cylinder block i kahi hoʻolālā deck open, a ua wili ʻia ka pahu cylinder haʻahaʻa e hoʻokomo i ka 4.173˝ OD step alumini lining.
Ua hoʻomaka ka hana hou ʻana o ka mīkini ʻo Wasinger i ka makahiki 2014, i ka wā i loaʻa ai iā ia kahi mīkini LT5 i hoʻohana ʻia ma Craigslist.
"Ua kūʻai au i kaʻu 1994 Corvette ZR-1 i ka makahiki 2007 a ua hoʻomaikaʻi i ka ʻenekini me nā hoʻololi bolt-on maʻamau i kūpono no kēia mau ʻenekini kūikawā," wahi a Wasinger. “E pili ana kēia i nā poʻomanaʻo paipu lōʻihi, ka ʻūhā catback hana, ke komo ʻana i ke awa, a me nā ʻāpana hoʻokani pila. No ka 350 cid, holo maikaʻi ka hapa nui o nā mīkini waiwai, hoʻopuka ma kahi o 485 horsepower, a huli maʻalahi i 7,200 rpm. Eia naʻe, makemake nui au e ʻike i ka mea e hiki ai i ka hoʻolālā ʻenekini DOHC LT5 ke hana ma ka hoʻohui ʻana i ka neʻe ʻana, nā poʻo cylinder, a me nā kāmela hana maʻamau. Ua hoʻomaka kēia i kaʻu huakaʻi epic 6 makahiki o ka 427 cid LT5.
Ma ke ʻano o ka hana ʻenekini, ʻaʻole ʻo Phil i DIYer maʻamau. No ka hapa nui o kāna ʻoihana, ua hana ʻo ia no nā mea hana mīkini diesel nui Kelemania MTU Friedrichshafen a me MAN Augsburg, e alakaʻi ana i kā lākou hana ma ʻAmelika Hui Pū ʻIa. ʻO ka US Navy, ka US Coast Guard a me ka American Flag Commercial Shipping Company kāna mau mea kūʻai nui.
Eia naʻe, ʻaʻole like me kāna hana i kāna ʻoihana, ʻo kēia hana LT5 he papahana hoʻokipa pilikino, hana nui ʻia ma ka hale kaʻa ʻohana Phil. Ua hana ʻia ka hana mīkini a me ke koena i loko o kāna hale hana mīkini mīkini kūloko kokoke i kona kūlanakauhale hānau ma Fairfax, Virginia, ma ka ʻākau o Virginia. ʻO ka mea mua, ʻike ʻo Phil ua makemake ʻo ia i ka horsepower a me ka neʻe ʻana.
"ʻO kā mākou pahuhopu ka hāʻawi ʻana i ka 650 horsepower maʻemaʻe a hilinaʻi no ke alanui a me ka holo ʻana," wahi a Vasinger. "Ma muli o ke ʻano hoʻolālā kūʻokoʻa o ka LT5, pono e hana ʻia ka crankshaft stroke mai ka blank. ʻO ka crankshaft ka nui o nā lua i loko ma ke ʻano he ala hoʻohele ʻaila wale nō no ka halihali nui a me ke koʻokoʻo hoʻohui. ʻO ka mea pōmaikaʻi, no kekahi kanaka au ma Texas Ua loaʻa i ke keonimana kahi billet kila ʻaʻole hoʻohana ʻia 4.00˝ crankshaft. Ua kūʻai mua ʻo ia no ka mana LT5, akā ʻaʻole i ʻike.
"I mea e hoʻohana ai i ka crankshaft stroke 4.000˝ e hiki ai i ka pahu hopu o 427 cid, pono e hoʻonui ʻia ka cylinder bore mai 3.900˝ i 4.125˝, e koi ana i ka hoʻonui ʻana o ka pahu pahu pahu. No kēia, ua huli au iā Pete Polatsidis, he loea ʻenekini LT5 ma Chicago, Ua hoʻomohala ʻo ia i ka hoʻololi ʻana i ka deck ductile iron bushing hoʻololi a me Darton Sleeves no ka mīkini LT5.
Hoʻolālā ʻia ka poloka cylinder LT5 e hoʻohana i nā bushings aluminika 99mm a me nā piston i hana ʻia e MAHLE. Hoʻopili ʻia ka ʻili o loko o ka lining me Nikasil e hāʻawi i kahi ʻili paʻa mau loa. ʻO ka hoʻonohonoho ʻana he hoʻolālā deck hāmama me ka ʻaoʻao haʻahaʻa o ka liner i hoʻokomo ʻia i loko o ka lua hoʻokipa i mīkini ʻia i lalo o ka poloka.
No ka hoʻokō ʻana i ka lua 4.125˝ i makemake ʻia e Phil, pono e hoʻohana i kahi lining hao ductile i hoʻololi ʻia i hana mua ʻia e Darton Sleeves a hoʻomaikaʻi ʻia e Pete Polatsidis e hoʻohana i kahi hoʻolālā deck pani.
"Me kēia liner deck i pani ʻia, hiki ke hoʻonui ʻia ke anawaena o loko o ka cylinder i 4.125˝, a ʻo ka mea maikaʻi ʻē aʻe ʻoi aku ka paʻa o ka cylinder," wahi āna.
Ma hope o ka hoʻomaopopo ʻana i ka neʻe ʻana o ka crankshaft a me ka ʻenekini, ua huli ʻo Phil i kona manaʻo i nā mea ʻē aʻe o loko, e like me nā lāʻau hoʻohui billet 6-inch i kēlā me kēia kaumaha he 605 grams, i hui pū ʻia me nā pistons alumini hoʻoheheʻe ʻia ʻo Diamond me nā pale pale a me nā pine offset.
"He 12:1 ka ratio o ka piston, a ua hoʻolālā pono ʻia ka pine offset a me ka uhi lole e hōʻemi i ka walaʻau piston hoʻomaka anu," wahi a Wasinger. "Ua hoʻohana pū wau i nā apo piston Total Seal-he apo ma luna o ka molybdenum malleable 1.5mm, kahi apo 1.5mm malleable cone wili lua, a me ke apo mana ʻaila 3mm."
Ua loaʻa pū i ka mana LT5 nā bearings i uhi ʻia ʻo Calico-OEM ma ka lako mana nui a me 2.1˝ i uhi ʻia i nā bearings Clevite 77 ma ke koʻokoʻo. Hoʻokomo ʻia ka ʻae ʻana o ka puke pai ma waena o ke koʻokoʻo a me ke kumu nui ma 0.0025˝.
I ka wā e pili ana i nā poʻo kilika a me nā kaʻaahi valve, ua kuhikuhi ʻo Phil ua hoʻolālā ʻia ke keʻena puhi ahi ʻehā-valve cylinder head LT5 i mea anti-kikeke loa, e ʻae ana i ka hoʻohana ʻana i nā lakio hoʻopiʻi kiʻekiʻe ke hoʻohana ʻia i ka wā e puhi ana i ka ea. I mea e hoʻonui ai i kāna hoʻonohonoho, ua hoʻololi piha ʻia ke poʻo cylinder a hoʻāʻo ʻia ke kahe. Wehe ʻia ka inlet ea a hiki i 37 mm, a ua hoʻonui ʻia ke kīʻaha inlet ea.
"Ua hoʻololi ʻia ka valve intake 39mm mua e Ferrea's 42mm stainless steel valve me kahi kumu 8mm," wahi āna. “Ua hoʻonui ʻia ka noho valve intake e hoʻohana pono i ka valve intake nui. Ua hoʻohana pū au i nā pūnāwai Ferrea a me nā mea mālama.
I mea e hana pono ai ka mīkini valve, ua koho ʻo Wasinger i kahi camshaft billet maʻamau mai Jones Cam Design. Ma waho aʻe o kāna hana ponoʻī, ua ʻōlelo ʻo Phil ua hana ʻia ka hoʻololi ʻana i nā mea hoʻohālikelike a me ka hana maʻamau o ka cylinder head valve e Lloyd Lovelace o Custom Automotive Machine ma Lorton, Virginia. Ua alakaʻi ʻia ka hopena hope loa o ka hoʻokani dynamometer kaʻa e Haibeck Automotive Technology ma Addison, Illinois.
Ma hope o ka ʻākoakoa piha ʻana o ka LT5 a hoʻoponopono ʻia, ua ʻōlelo ʻo Wasinger ua loaʻa iā ia ka 650 horsepower āna i manaʻo ai. I kēia manawa, ua hoʻi hou kēia 1994 ZR-1 Corvette ma ke alanui.
I kēia pule ua kākoʻo ʻia ka ʻenekini e PennGrade Motor Oil, Elring – Das Original a me Scat Crankshafts. Inā loaʻa iā ʻoe kahi ʻenekini āu e makemake ai e hōʻike i kēia moʻo, e ʻoluʻolu e hoʻouna i leka uila iā [email protected] Engine Builder editor Greg Jones
Ka manawa hoʻouna: Sep-13-2021
