Head Bolt torque

Great. Thanks for that.

It looks like there are several engines used in the Civic DX. The engine serial number is located on exhaust side of engine block, below cylinder head near bellhousing. The first 5 characters of engine serial number identify engine type. Please take note of your serial number before following instructions below, although the tightening sequence remains the same, the torque specs are different for each engine type in the Civic DX.

Here is a video to help you see how to use a torque wrench.

https://youtu.be/juOClONIWeY

SOHC ENGINES for Civic DX

Cylinder Head Bolt Specs.:
Engine Type D15B7 & D15B8 :
Stage 1 - 22 ft lbs (30 Nm)
Stage 2 - 48 ft lbs (65 Nm)

Engine Type D15Z1 & D16Z6
Stage 1 - 22 ft lbs (30 Nm)
Stage 2 - 53 ft lbs (73 Nm)

Cylinder Head Bolt Tightening Sequence

SOHC ENGINES for Civic DX

Intake Manifold-To-Cylinder Head Nut Specs.:
17 ft lbs (23 Nm)

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

Cheers

Step one 30 Nm Step two 65 Nm.

D15B7 and D15B8 Engines
Stage 1 = 22 foot pounds
Stage 2 = 48 foot pounds

D15Z1 and D16Z6 Engines
Stage 1 = 22 foot pounds
Stage 2 = 53 foot pounds

Normally not unless the instructions with the head gasket specified differently. Was the head checked for warpage? If it had less than.002" irregularity, resurfacing isn't necessary but it will help the gasket bite and seal better. If there was a lot of warpage, overhead cam heads have to be heated and straightened, otherwise the cam journals will still be out of alignment.

1.5l engine

1.6VETc

CYLINDER HEAD BOLTS TIGHTENING SEQUENCE
Tighten the cylinder head bolts in two steps.
1st step : 30 N Â m (3.0 kg-m, 22 Ib-ft)
2nd step:
D16Z6, D15Z1 engines:
73 N Â m (7.3 kg-m, 53 Ib-ft)
D15B7, D15B8 engines:
65 N Â m (6.5 kg-m, 47 Ib-ft)

See below

D16ZE stage 1 22ft lbs /stage 2 53ft lbs see below