GM 2.2 Engine - Bottom End Assembly
Assembling the bottom end of the GM 2.2 S10 engine after machine shop overhaul: preparing components, crankshaft, pistons, rings, and oil and water pumps.
📋 Quick Overview / Problem & Solution
Application: Chevrolet S10 1996 com motor GM 2.2, na montagem da parte inferior após a retífica.
Symptom / Problem: O vídeo documenta a etapa de remontagem do conjunto inferior do motor, não o diagnóstico de uma falha isolada.
Procedure & Result: Crankshaft, pistons, rings, rear seal, and oil and water pumps are assembled.
⚡ Tightening Torques & Specifications
| Component | Specified Torque | Assembly Notes |
|---|---|---|
| Crankshaft main bearing cap bolts | 50 N·m + 45° + 15° | Sequência relatada do centro para fora: 50 N·m, depois 45° e por último 15°. O autor discute a limitação de medir ângulos pequenos sem ferramenta dedicada. |
| Connecting rod cap bolts | 35 N·m + 45° | Valor e ângulo relatados após a montagem; a aplicação não ficou gravada. A unidade do primeiro valor foi interpretada pelo contexto de torque, por isso exige conferência no manual. |
| Oil pump mounting bolts | aprox. 10 N·m | A fala associa o valor a 1 kgf·m (aprox. 9,8 N·m), arredondado no relato para 10 N·m. O autor mostra uso de torquímetro de faixa baixa. |
Video chapters
- 00:00 Weight balancing of piston and connecting rod assemblies
- 05:14 Replacing the pilot bearing in the crankshaft
- 09:39 Engine block preparation and cleaning for assembly
- 12:59 Main bearing installation and assembly lubrication
- 16:30 Crankshaft in block and main bearing cap installation
- 17:01 Preparing the rear main bearing cap seal
- 19:51 Bolt lubrication and precautions against hydraulic lock
- 22:01 Torquing main bearing caps with torque and angle stages
- 25:08 Checking crankshaft rotation and rear sealing with sealant and wick
- 28:17 Preparing pistons, rod bearings, and piston rings
- 32:00 Piston orientation and piston ring installation
- 36:22 Staggering piston ring end gaps and oil ring expander
- 39:25 Installing piston with ring compressor and fitting rod bearing
- 43:58 Rechecking ring gap orientation prior to final torquing
- 44:38 Connecting rod torque report and bolt angle marking
- 45:30 New oil pump and gasket preparation
- 50:51 Oil pump assembly, front seal, and bolt torquing
- 53:58 Water pump inspection and installation
- 56:49 Final check and protecting the engine for subsequent steps
Tools used
- Dremel com disquinho de pedra e tamborzinho (disquinho de pedra + tamborzinho)
- Low-range torque wrench
- Medium-range torque wrench
- saca-rolamento (kit com expansor interno)
- balança (alcance até 2 kg)
- cinta compressora de anéis de pistão
- morsa
- picker / gancho fino
- chave allen 2.5 (2.5 mm)
- masking tape
Parts mentioned / replaced
- crankshaft pilot bearing
- oil pump
- oil pump gasket
- water pump
- Lubriplate 105
- aviation gasket (junta de aviação)
- trava-rosca
- cola de motor diesel (cola 3M)