GM LR4 cav
Txheem
Lub 4.8-liter V8 GM LR4 cav yog tsim los ntawm American kev txhawj xeeb los ntawm 1998 txog 2007 thiab tau nruab rau ntawm Chevrolet Tahoe SUV nyob rau hauv lub nraub qaum ntawm GMT 800 thiab Yukon zoo ib yam li nws. Lub cav no kuj tau nruab rau Silverado thiab Sierra pickups, nrog rau Express thiab Savana minibuses.
В линейку Vortec III также входит двс: LM7.
Technical yam ntxwv ntawm GM LR4 4.8 liter engine
| Qhov tseeb ntim | 4806 cm³ |
| Lub kaw lus muaj zog | kev faib tawm txhaj tshuaj |
| Internal combustion engine zog | 255 - 285 HP |
| Torque | 385 - 400 Nm |
| Lub tog raj kheej thaiv | hlau v8 |
| Thaiv lub taub hau | aluminium 16 v |
| Lub tog raj kheej taub | 96 hli |
| Piston mob stroke | 83 hli |
| Compression piv | 9.4 |
| Nta ntawm lub cav hluav taws xob sab hauv | OHV |
| Hydraulic compensators | yog |
| Sijhawm tsav | saw hlau |
| Cov theem ntsuas | tsis muaj |
| Kev qhauj nqaj tawv | tsis muaj |
| Hom roj zoo li cas | 5.7 litres 5W-30 |
| Roj hom | AI-92 |
| Ib puag ncig cov chav kawm | EURO 2 |
| Cov peev txheej kwv yees | 450 000 km |
Roj noj Chevrolet LR4
Siv cov piv txwv ntawm 2003 Chevrolet Tahoe nrog kev sib kis tsis siv neeg:
| Huab cua | 17.7 liters |
| Taug qab | 9.9 liters |
| Sib xyaw | 12.8 liters |
Cov tsheb twg tau nruab nrog lub cav LR4 4.8 l
| Kev nthuav qhia 2 (GMT 610) | 2003 - 2006 |
| Silverado 1 (GMT 800) | 1998 - 2007 |
| Tahoe 2 (GMT820) | 1999 - 2006 |
| Savana 2 (GMT 610) | 2003 - 2006 |
| Pom 2 (GMT800) | 1998 - 2007 |
| Yukon 2 (GMT820) | 1999 - 2006 |
Qhov tsis zoo, kev puas tsuaj thiab teeb meem ntawm lub cav combustion LR4
Tus yuam sij rau kev ua haujlwm tsis muaj teeb meem ntawm lub tshuab hluav taws xob sab hauv yog kev huv ntawm lub tshuab hluav taws xob thiab qhov xwm txheej ntawm lub twj tso kua dej.
Yas tees tawg los ntawm overheating, leaks ntawm lubricant thiab antifreeze tshwm
Thiab kev siv cov roj uas pheej yig ua rau hnav cov camshaft liners sai.
Peb tsis pom zoo kom txhim kho cov khoom siv roj, lub rooj zaum valve yuav tsuas poob tawm
Cov ntsiab lus tsis muaj zog ntawm chav tsev kuj muaj xws li ignition coils, roj av twj tso kua mis thiab adsorber
