SOURCE: Engine Bolt Torques- 2005 Chevy Impala/3400 Engine
Head Bolts
Step one 37 ft lbs then tignten 120 degrees more
Rocker arms
Step one 11 ft lbs then tighten 90 degresss more
Upper intake
89 inch lbs
Lower intake
132 inch lbs
SOURCE: how to replace a timing chain 2000 chevy cavalier
I am familiar with that vehicle but generally with timing chain replacement, the engine needs full access for pulley and cover removal and in some cases the cylinder head requires removal.
Generally timing chains last so that they only need replacement at engine overhaul and it is not an economic proposition to have to replace a chain unless some relative degree of engine work is also required at that time.
Engine timing chains generally have a tensioner on them which maintains tension, but some chains can wear significantly and cause timing cover to be "ground away" because of "slop".
If the engine is making the noisy rattle of the timing chain against the cover etc, I would schedule a top overhaul (head, machine, test and valve grind) with the chain replacement dependent on mileage with the degree of action.
Some simple simplex timing chains (type of chain similar to motor bike chain) may be replaced without dismantling the engines but I would expect your chain would be a "duplex" dual sprocket type, these are most common.
These chains are not generally expensive but replacing them can involve a fair amount of work.
Good Luck and hope this helps, Others will have different ideas.
SOURCE: 2004 chevy aveo cylinder head bolt torque how many
Step 1: 18 lb.-ft.
Step 2: additional 60 degrees.
Step 3: additional 60 degrees.
Step 4: additional 60 degrees.
Step 5: additional 10 degrees.
Each step involves starting at the center two bolts of the head and alternately tightening in a criss-cross pattern, ending with the bolts on the outer edge of the head.
SOURCE: TORQUE SPECS /HEAD GASKET/2001 CAVALIER...
for the 2.2L OHV:
(pully 8 4 1 5 9 <-- long bolts @ 63Nm (46ft/lb)
side ) 7 3 2 6 10 <-- short bolts / 10 is the stud @ 58Nm (43ft/lb)
for the 2.4l
dohc are as follows:
(pully 9 3 1 5 7
side) 10 6 2
4 8
bolts 1-8 torqued to 65Nm (40ft/lb)
bolts 9-10 torqued to
40Nm (30ft/lb)
then (either engine) give each an additional 90° (¼)
turn
it's best to do
the tightening in stages, you don't want to go completely tight on the
first pass or there will problems and you'll get to do it all over again
SOURCE: i need the torque sequence
There's two engine's, your car could have, 2.2L or 2.4L. so here's both, cylinder head torque for 2.4L engine.
Step # 1
Bolt's 1 - 8 40 Ft.Lbs
Bolt's 9 - 10 30 Ft.Lbs
Step # 2
All bolt's additional 90deg.
Hope this was very helpful.
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