keenyoung

OK, I am at a bit of a loss here. I have seen three completely different torque specs for the 2009 L4-1.6 engine head bolts.
18 ft/lb+60+60+60+10 degrees
25NM+70+70+70+35 degrees
25NM+90+90+90+45 degrees

The last one is from the All Data Repair website for the car which supposedly is from the manufacturer service manual. However, it is MUCH higher than the other figures, so I suspect it.

Anyone have a service manual for the 2009 with the later VIN?

Thanks,
Keen

Richard Till

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Install new cylinder head bolts, and tighten the bolts as follows:
Tighten the bolts in the sequence shown to 18 ft. lbs. (25 Nm).
Tighten the bolts in the sequence shown an additional 60 degrees.
Tighten the bolts in the sequence shown an additional 60 degrees for a second time.
Tighten the bolts in the sequence shown an additional 60 degrees a third time.
Tighten the bolts in the sequence shown an additional 10 degrees.

keenyoung

Thank you for the post. Unfortunately, that sequence is for the earlier version of the 1.6 engine. I have the 2009 LXV version of the 1.6, and they changed the head and associated torque sequence. I have since found two different versions of the 2009 service manual specs. One calls for torque to 25 nm, then 90+90+90+45 degrees. The other one says torque to 25 nm, then 90+90+45 degrees. I think my only recourse is to pop down to the local Chevy dealer and see if the service manager will help me.

Thanks,
Keen