GM LS cav: txhua yam koj xav paub

LS world!

Hloov cov lus dab neeg ntawm txhua yam yog ib txoj haujlwm nyuaj. Tab sis thaum nws los txog rau Chevrolet lub npe nrov me me-block V8 cav (uas khiav los ntawm 1954 txog 2003 hauv Gen 1 thiab Gen 2 daim ntawv, powering txhua yam los ntawm Corvettes mus nqa tsheb), txhua tsev neeg lub cav sim hloov nws muaj cov khau loj loj. . .

Yog lawm, kev cia siab ua haujlwm tau zoo thiab tso pa tawm tawm ntawm cov lus nug, thiab thaum kawg, Chevrolet xav tau kev hloov pauv rau thawj qhov me me uas daws cov teeb meem no. Qhov tshwm sim yog LS engine tsev neeg.

Kev tsim cov thaiv me me thiab LS ntau qhov sib tshooj tau ntau xyoo (feem ntau hauv Asmeskas), nrog rau thawj LS variant tshwm sim hauv 1997.

Cov cim npe no, tseem hu ua Gen 3 lub cav, tau tsim kom paub qhov txawv ntawm V8 tshiab los ntawm kev tsim ua ntej Gen 1 thiab Gen 2 me me blocks.

LS V8 modular engine tsev neeg muaj nyob rau hauv ob qho tib si txhuas thiab cam khwb cia hlau crankcase duab, ntau yam hloov, thiab nyob rau hauv ob qho tib si ib txwm aspirated thiab supercharged configurations.

Zoo li thawj Chevy V8 lub cav me me, lub cav LS yog siv ntau lab lub tsheb los ntawm ntau hom GM, suav nrog tsheb thiab tsheb ua lag luam.

Hauv tebchaws Australia, peb tau txwv (hauv kev txiav txim siab ntawm lub Hoobkas) rau LS alloy version hauv Holden cov khoom lag luam, HSV tsheb, thiab qhov tseeb Chevrolet Camaro.

Rau ib lub sij hawm luv luv, HSV hloov lub Camaros rau sab xis tsav.

Nyob rau hauv txoj kev, Australian Holdens tau haum nrog thawj iteration ntawm 1-liter LS5.7, pib nrog 2 VT Series 1999, uas khav theeb 220kW thiab 446Nm ntawm lub zog ntawm qhov siab 4400rpm.

Lub VX Commodore hauv V8 daim ntawv kuj tau siv LS1, nrog lub zog me ntsis nce mus rau 225kW thiab 460Nm. Holden txuas ntxiv siv tib lub cav rau nws cov qauv SS thiab V8 raws li Commodore hloov dua siab tshiab VY thiab VZ qauv, nrog rau qhov siab tshaj plaws ntawm 250kW thiab 470Nm.

2004 Holden VZ Commodore SS.

Tsis ntev los no ntawm VZ Commodores kuj tau nthuav tawm L76 version ntawm LS lub cav, uas muaj tag nrho cov kev hloov pauv ntawm 6.0 litres thiab muab lub zog me ntsis ntxiv rau 260 kW tab sis qhov loj dua ntawm torque mus rau 510 Nm.

Zoo sib xws rau qhov tseem hu ua LS2 lub cav, L76 yog qhov tseeb ua haujlwm ntawm LS lub tswv yim. Cov brand tshiab VE Commodore (thiab Calais) V8 tseem nrog L76, tab sis 2 series VE thiab thawj series ntawm lub xeem Australian Commodore, VF, hloov mus rau L77, uas yog qhov tseem ceeb ntawm L76 nrog flex-fuel peev xwm. .

Qhov tseeb VF Series 2 V8 qauv tau hloov mus rau 6.2-liter LS3 cav (yav dhau los HSV qauv nkaus xwb) nrog 304kW thiab 570Nm ntawm lub zog. Nrog rau kev tso tawm dual-module thiab ua tib zoo saib xyuas kom meej, cov LS3-powered Commodores tau dhau los ua cov khoom ntim khoom.

Qhov kawg ntawm Commodore SS tau siv los ntawm 6.2 litre LS3 V8 cav.

Lub caij no ntawm Holden Cov Tsheb Tshwj Xeeb, LS-tsev neeg lub cav kuj tau siv cov khoom siv raws li Commodore txij li xyoo 1999, nrog rau kev hloov mus rau 6.0-liter L76 rau VZ-raws li tsheb hauv xyoo 2004 thiab tom qab ntawd mus rau 6.2-liter LS3 rau VZ-raws li tsheb. . E-series tsheb txij li xyoo 2008.

HSV tau flexing nws cov leeg rau lub hurray kawg ntawm nws Gen-F tsheb nrog Series 2 version powered los ntawm ib tug supercharged 6.2-litre LSA cav nrog tsawg kawg yog 400kW thiab 671Nm.

GTSR W1 yuav yog qhov zoo tshaj plaws HSV mus ib txhis.

Tab sis nws tsis yog qhov kawg HSV, thiab qhov txwv tsim GTSR W1 siv tes ua version ntawm LS9 lub cav nrog 6.2 litres, 2.3 litre supercharger, titanium txuas rods thiab lub twj tso kua mis qhuav lubrication system. Qhov kawg tshwm sim yog 474 kW ntawm lub zog thiab 815 Nm ntawm lub zog.

LS cav destined rau Australian kev pab cuam suav nrog hloov kho 5.7kW Callaway (USA) 300L cav rau qhov tshwj xeeb VX-shaped version ntawm HSV, nrog rau ib tug tseem yug los HRT 427 haiv neeg lub tsheb uas siv 7.0L LS7. cav nyob rau hauv ib txwm aspirated daim ntawv, ntawm uas tsuas yog ob tug prototypes tau tsim ua ntej qhov project yog scrapped ostensibly vim nyiaj txiag.

Lub tswvyim ntawm HRT 427.

Ntau lwm yam khoom siv ntawm LS muaj nyob, xws li LS6, uas tau tshwj tseg rau American Corvettes thiab Cadillacs, thiab cam khwb cia hlau tsheb-raws li versions ntawm LS, tab sis yeej tsis tau ua rau lub lag luam ntawd.

Kom paub meej tias koj tab tom cuam tshuam dab tsi (thiab qhov no tuaj yeem ua tsis yooj yim txij li ntau LS lub cav xaiv tau ntiag tug tuaj ntawm no), saib hauv online LS cav naj npawb decoder uas yuav qhia koj tias LS variant koj tab tom nrhiav.

Dab tsi yog qhov zoo ntawm LS?

LS tuaj nyob rau hauv ntau qhov ntau thiab tsawg.

Lub cav LS tau nyiam cov nram qab no ntau xyoo, feem ntau vim nws yog ib qho yooj yim daws rau V8 lub zog.

Nws txhim khu kev qha, ruaj khov, thiab kho tau zoo heev, thiab muab lub zog zoo thiab lub zog tawm ntawm lub thawv.

Ib feem loj ntawm qhov kev thov rov hais dua yog tias LS tsev neeg muaj zog. Siv lub Y-block tsim, cov neeg tsim khoom haum rau LS nrog rau lub ntsiab bearings (plaub txuas cov kabmob vertically thiab ob kab rov tav hla sab ntawm lub block), thaum feem ntau V8s muaj plaub lossis ob lub taub hau kabmob.

Qhov no muab lub cav, txawm tias nyob rau hauv cov ntaub ntawv txhuas, zoo kawg rigidity thiab tau txais kev pab raws li lub hauv paus zoo heev rau extracting horsepower. Daim duab qhia lub cav uas qhia txog cov qauv hauv qab yuav sai sai no qhia tias yog vim li cas LS hauv qab kawg thiaj li ntseeg tau.

Lub LS kuj tseem yog compact thiab lub teeb yuag. Lub teeb alloy version ntawm lub cav LS hnyav dua qee lub cav plaub-lub tog raj kheej (tsawg dua 180 kg) thiab tuaj yeem teeb tsa rau ntau yam kev siv.

Nws kuj tseem yog lub tshuab ua pa dawb tsim nrog lub tog raj kheej taub hau uas yuav txhawb nqa lub zog ntau dua li cov khoom lag luam.

Thaum ntxov LSs tau hu ua "cathedral" chaw nres nkoj rau cov chaw nres nkoj siab uas tso cai rau ua pa tob. Txawm tias qhov loj camshaft core loj zoo li nws tau tsim rau cov tuners, thiab LS tuaj yeem tuav lub camshaft loj ua ntej nws pib ntxhov siab rau qhov seem ntawm cov architecture.

LS hnyav dua li qee lub cav plaub-lub tog raj kheej.

LS kuj tseem yooj yim kom tau txais thiab pheej yig mus yuav. Ib zaug ib zaug, junkyards tau tag nrho ntawm kev puas tsuaj Commodore SSs, thiab txawm hais tias tej yam tau hloov me ntsis tsis ntev los no, nrhiav tau ib tug zoo siv LS1 yog ib qho yooj yim dua mus caum lub 5.0-liter Holden engine.

LS kuj raug nqi zoo. Ib zaug ntxiv, qhov no tau hloov pauv me ntsis txij li Covid, tab sis siv LS yuav tsis tawg lub txhab nyiaj piv rau lwm txoj hauv kev.

Ntxiv rau qhov pib disassembly, kev faib tawm kuj yog qhov chaw zoo los nrhiav LS lub cav muag. Feem ntau, lub cav LS1 thaum ntxov yuav raug muag, tab sis tom qab ntau cov kab txawv txawv kuj muaj.

Lwm qhov kev xaiv yog lub crate tshiab lub cev muaj zog, thiab ua tsaug rau qhov kev thov thoob ntiaj teb loj, cov nqi tsim nyog. Yog lawm, lub cav LSA crate tseem yuav ua rau koj lom zem ntau, tab sis qhov ntawd yog qhov txwv, thiab muaj ntau yam kev xaiv thiab lub cav specs ntawm txoj kev.

Rau kev tsim cov peev nyiaj, qhov zoo tshaj plaws LS lub cav yog qhov koj tuaj yeem tau txais rau tus nqi me me, thiab ntau cov kev hloov kho yog cov ntsiab lus kom tawm ntawm cov cav siv raws li lawv, raws li lub zog loj thiab kev ntseeg tau.

Kev saib xyuas yog ib qho yooj yim, thiab thaum lub txim hluav taws xob yuav tsum tau hloov pauv txhua 80,000 mais, LS muaj lub sijhawm ua haujlwm ntawm lub neej (tsis yog siv roj hmab).

Qee tus tswv tau sib cais LSs nrog 400,000 km lossis txawm tias 500,000 km ntawm lub ntsuas ntsuas thiab pom cov cav uas tseem tuaj yeem ua haujlwm nrog tsawg tsawg hauv kev hnav. 

Teeb meem

Thaum ntxov LS1s hauv qee qhov Holden tau ua pov thawj tias yog cov roj hlawv.

Yog hais tias lub cav LS muaj lub pob taws Achilles, nws yuav yog lub valvetrain, uas yog lub npe hu ua kib hydraulic lifters thiab clog valve springs. Ib qho kev hloov kho camshaft yuav tsum tau saib xyuas hauv cheeb tsam no, thiab txawm tias tom qab versions tseem raug kev txom nyem los ntawm lifter tsis ua hauj lwm.

Thaum ntxov LS1s hauv qee qhov Holden tau ua pov thawj tias yog cov roj hlawv, tab sis qhov no feem ntau yog vim muaj kev sib dhos tsis zoo ntawm Mexican Hoobkas uas lawv tau tsim.

Raws li qhov ua tau zoo dua qub, cov khoom kawg tau ua tiav. Qhov loj, tiaj tus, ntiav crankcase kuj txhais tau hais tias lub tsheb yuav tsum nyob rau ntawm qhov chaw zoo kawg nkaus thaum kuaj xyuas cov roj theem, vim tias lub kaum sab xis me ntsis tuaj yeem cuam tshuam qhov kev nyeem ntawv thiab tej zaum yuav ua rau muaj kev ntxhov siab thaum ntxov.

Ntau tus tswv kuj tau sib tham txog hom roj los txo cov roj noj, thiab cov roj cav zoo yog qhov yuav tsum tau ua rau LS.

Ntau tus tswv qhia qee lub piston khob txawm tias muaj lub cav tshiab, thiab thaum muaj kev ntxhov siab, nws tsis zoo li muaj kev cuam tshuam ntev rau lub cav lossis nws txoj sia.

Feem ntau, piston khob ploj lawm los ntawm kev hloov lub iav thib ob thaum nruab hnub thiab tsis rov qab mus txog thaum pib txias tom ntej.

Hauv qee lub cav, piston khob yog ib qho cim ntawm kev puas tsuaj yuav tshwm sim. Nyob rau hauv LS, zoo li nrog rau ntau lwm lub teeb alloy xyaw, nws zoo li nws tsuas yog ib feem ntawm qhov deal.

Hloov

Tsuas yog 7.4-liter twin-turbocharged V8 hauv Honda Civic… (Image credit: LS the world)

Vim tias nws yog ib qho kev txhim khu kev qha, kho tau lub platform, LS cav tau nrov nrog tuners thoob ntiaj teb txij li hnub ib.

Txawm li cas los xij, thawj qhov kev hloov kho uas feem ntau cov tswv Australian ua ntej LS1 V8s tau ua yog tshem tawm cov khoom siv yas lub cav cav npog thiab siv cov khoom npog npog los txhim kho qhov zoo nkauj ob daim npog tom qab muag khoom.

Tom qab ntawd, kev saib xyuas feem ntau tig mus rau qhov hnyav dua camshaft, qee lub tog raj kheej lub taub hau ua haujlwm, cua txias kom tsawg, thiab lub tshuab computer retuning.

LS kuj teb tau zoo rau lub tshuab tso pa kom zoo, thiab qee tus tswv tau muaj kev vam meej tsuas yog los ntawm kev txhim kho lub tshuab tso pa tawm dawb. Qee zaum txawm tias cov lus tawm tswv yim tso tawm me ntsis ntxiv peev xwm.

Tsis tas li ntawd, yuav luag txhua yam uas tuaj yeem ua tau nrog lub cav tau ua tiav nrog LS V8. Qee qhov kev hloov kho tau txawm tias ditched tus qauv hluav taws xob txhaj tshuaj thiab haum rau lawv LSs nrog lub siab-siab manifold thiab carburetor loj rau retro styling.

Cov neeg yuav pov LS ntawm txhua yam. (Cov duab credit: LS world)

Qhov tseeb, ib zaug koj tau dhau mus dhau qhov yooj yim LS cov khoom siv rov qab, cov kev hloov kho tsis muaj qhov kawg. Peb tau pom ntau tus ntxaib- thiab ib leeg-turbo LS V8s (thiab lub cav nyiam supercharge, raws li pov thawj los ntawm supercharged version ntawm LSA).

Lwm qhov kev sib tw thoob ntiaj teb yog kom haum LSs rau txhua yam ntawm cov tsheb sib tw mus rau kev tsheb ntawm txhua daim duab thiab qhov ntau thiab tsawg.

Koj tuaj yeem yuav ib lub cav mounts los txiav LS rau ntau yam ntawm kev tsim thiab qauv, thiab lub teeb yuag ntawm cov alloy LS txhais tau tias txawm tias lub tsheb me tuaj yeem kho qhov kev kho no.

Hauv tebchaws Australia, cov tuam txhab xws li Tuff Mounts kuj muaj cov khoom siv mounting rau ntau qhov kev hloov kho LS.

Lub cav qhov nrov tshaj plaws txhais tau tias tsis muaj ib feem koj tsis tuaj yeem yuav rau LS V8, thiab tsis muaj daim ntawv thov uas nws tseem tsis tau siv. Qhov no txhais tau hais tias tom qab muag khoom loj heev thiab cov kev paub hauv qab yog loj heev.

LS tsev neeg tej zaum yuav pushrod ob-valve, tab sis nyob rau hauv cov nqe lus ntawm cov kev cuam tshuam nws muaj nyob rau hauv lub ntiaj teb no, tsis muaj ntau (yog tias muaj) lwm yam V8 cav uas yuav phim nws.