BUICK 3800 FASTENER TIGHTENING TORQUE SPECIFICATION

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steveX

BUICK 3800 FASTENER TIGHTENING TORQUE SPECIFICATION

Post by steveX » Thu May 29, 2008 3:44 pm

Use a reliable torque wrench to tighten all fasteners. This will prevent damaging the components and threads. All fasteners and threaded holes should be clean and lightly lubricated with oil unless noted otherwise. Dry or dirty threads produce friction which prevent accurate torque measurement.

Balancer shaft gear bolt.....................................14lb.ft plus an additional 35 degrees

balance shaft retainer.......................................22lb.ft

camshaft sensor front cover................................75lb.in

camshaft sprocket bolts.....................................27lb.ft

connecting rod bolts.........................................20lb.ft+3(+50 degree + 3 degrees)

coolant temperature sensor to intake.....................15lb.ft

crankshaft bearing caps to cylinder block.................26lb.ft +3(+50degrees + 3 degrees)

crankshaft sensor to front cover...........................22lb.ft

crankshaft sensor clamp bolt...............................40lb.in

cylinder block drain plug....................................

cylinder head to block.......................................apply sealant gm p/n 1052080. apply thread locker gm p/n 12345382. tighten cylinder head bolts to 35lb.ft. rotate each bolt 130 degrees. then rotate the center four bolts and additional 30 degrees in sequence.

CYLINDER HEAD BOLTS INTAKE SIDE_______6........1........3.........7
CYLINDER HEAD BOLTS EXHAUST SIDE_____8........4........2.........5

ESC knock sensor to cylinder block........................13lb.ft

exhaust manifold to cylinder head........................41lb.ft

flywheel cover to transaxle................................48lb.in

flywheel to crankshaft......................................61lb.ft

front cover to block.........................................22lb.ft

fuel feed and return pipes to fuel rail.....................22lb.ft

fuel rail to intake manifold................................120lb.in

generator support to cylinder head.......................36lb.ft

generator support through generator....................36lb.ft

heater hose fitting to intake.............................11lb.ft

ignition module to generator support...................18lb.ft

intake manifold to cylinder head.........................88lb.in

mount (engine) to cylinder block.........................70lb.ft

oil filter adapter to front cover..........................24lb.ft

oil filter assembly to filter adapter......................18lb.ft

oil gallery plugs............................................25lb.ft

drain plug to oil pan......................................18lb.ft

oil pan to cylinder block..................................

oil pan to front cover....................................

oil pressure switch to cylinder block....................24lb.ft

oil pump cover to front cover...........................97lb.in

oil screen hosing to cylinder block......................73lb.in

oxygen sensor to exhaust manifold.....................31lb.ft

Pulley assembly to crankshaft...........................105lb.ft +7 (+56 degree + 4 degrees)

rocker arm cover to cylinder head......................88lb.in

rocker arm pedestal to cylinder head...................28lb.ft

spark plug to cylinder head..............................20lb.ft

starter motor to cylinder block..........................35lb.ft

thermostat housing to intake manifold................20lb.ft

throttle body to intake manifold........................20lb.ft

throttle cable bracket to throttle body.................35lb.in

Timing chain damper (special bolt).....................14lb.ft

torque converter to flywheel.............................46lb.ft

transaxle to cylinder block...............................55lb.ft

valve lifter guide retainer bolts.........................27lb.ft

water pump to front cover...............................126lb.in

water pump pulley to hub................................114lb.in

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