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View Full Version : Torque settings for rockers on Gq 4.2 petrol



wakerider
12th November 2012, 08:17 PM
Hey guys,
I have a 1989 Gq 4.2ltr petrol and I am after torque settings for the rockers and I am also after the clearance for the rockers and weather you adjust them when engine is hot or cold. Any advice would be great.
Thanks.

Bigrig
12th November 2012, 09:02 PM
This is from another thread on here mate that Patch posted ... its straight from the manual so is spot on.

TB42 Tappet adjustment.

Adjusting Intake and Exhaust Valve Clearance
Adjustment should be made while engine is warm but not running

1. Set No. 1 cylinder at top dead centre on its compression stroke,(with timing marks aligned remove distributor cap the rotor button should be pointing at number 1 ignition lead position in reference to the distributor cap if its not rotate engine 360 degrease) and adjust valve clearances 1,2,3,6,7,10

2. Set No. 6 cylinder at top dead centre on its compression stroke, (with timing marks aligned remove distributor cap the rotor button should be pointing at number 6 ignition lead position in reference to the distributor cap if its not rotate engine 360 degrease) and adjust valve clearances 4,5,8,9,11,12

Valve clearance
Intake 1,3,5,7,9,11 - 0.38mm (0.015 in)
Exhaust 2,4,6,8,10,12 - 0.38mm (0.015 in)

Adjusting screw lock nuts - 16 - 22 Nm (1.6 - 2.2 kg/m, 12 - 16 ft/lb)

wakerider
12th November 2012, 09:54 PM
sweet thanks heaps bigrig