Question about Chevrolet 2002 Chevrolet Silverado 1500 Base
# 7 cylinder has a hole(chunk) in it. I'm thinking I could just replace the 1 piston with it still in truck. I can't find a reasonable used 5.3. Cost wise would help me out a lot. I might get what another 5,000 or so miles. I thought was head gasket and bought a set. I hadn't took heads to machine shop yet ($250, $50 ring set compared to $1300 used motor. I need some advice on this decision please. I know won't last long but it should get till beginning of next year.
You would need to drop the oil pan to remove the con rod bolts to be able to remove the piston. Sounds like you have the heads off. You would then pull the piston out drop a new one in (will need a piston ring compression tool) reconnect and torque the con rod. Reinstall heads and other xompnenets. Not sure how long or even if it will run as there could be other damage.
Posted on Oct 07, 2016
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Posted on Jan 02, 2017
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Since you didn't say which engine you have, I've pulled torque specs for 3 different engines. Also, since I can't include a diagram showing the relative locations of the numbered head-bolt locations, it would be a good idea for you to purchase a vehicle specific repair guide that will show this info.
Take particular note about the TTY (Torque to Yield) bolts used on 2 of the 3 engines shown. It is said that new head bolts MUST BE USED when head is replaced or re-installed to obtain the proper torque.
B2500 4 Cylinder
Torque sequence: --------- ' 10 6 2 4 8
' front ' ' ' 7 3 1 5 9 ' -----------Step 1: torque in sequence to 51
Ft/Lbs Step 2: torque again in sequence to 51 Ft/Lbs Step 3: final
tighten all bolts an additional 90 to 100 degrees recheck final
torque in sequence *** CAUTION ***engine uses Torque To Yield head
bolts (TTY) that permanently stretch during the initial installation.
New head bolts must be used when cylinder head is replaced or
re-installed to obtain proper torque.
B3000 3.0 6 Cylinder
Torque sequence ---------- ' 6 4 2 8 '
' ' ' 5 1 3 7 ' ---------- Step 1: torque to 59 Ft/Lbs Step 2: loosen
in sequence (1) full turn Step 3: torque to 41 Ft/Lbs Step 4: torque
to 73 Ft/Lbs
B4000 4.0 6 Cylinder
Torque sequence --------- ' 5 1 3 7 ' '
' ' 6 4 2 8 ' --------- Step 1: torque cylinder head bolts in
sequence to 26 Ft/Lbs Step 2: torque cylinder head bolts to 56 Ft/Lbs
Step 3: turn cylinder head bolts in sequence an additional 90-degrees
recheck final torque in sequence *** CAUTION ***engine uses Torque To
Yield head bolts (TTY) that permanently stretch during the initial
installation. New head bolts must be used when cylinder head is
replaced or re-installed to obtain proper torque.
Good luck with this job!
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