Question about Holden Cars & Trucks
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Posted on Jan 02, 2017
stage 1 = 29Nm(21 lb ft/3.0 kg-m)
final = 64Nm(47 lb ft/6.5kg-m)
do not reuse head bolts or apply any lubricant to the bolts. Do up bolts in following order for each head.
6 1 3 7
5 2 4 8
Posted on Dec 05, 2009
timing cover has marks on it,line it up with pulley,remove pulley and cover,check to see if any marks on camshaft.un do tensioner.to be sure make your own marks
Posted on Jan 02, 2010
SOURCE: I have a 1998 Holden
I cannot find a EL20B in my data,but all Astra listed had the same head sequence as shown:
10 6 2 3 7
9 5 1 4 8
the torque specs for the C20XE,C20NE,X20XEV were all
25nm(18lb/ft),-then 90 deg,-90deg,-90deg.
Z20LET were as above plus an additional 15deg.
Same data for smaller and larger engines(except a couple that were 45deg instead of 15)
Make sure that you replace the head bolts with new,they are torque to yield bolts that are designed to stretch to 'plastic' state,and should not be reused.
Put grease(graphite if you have it) under bolt heads and washers,oil the threads.
Usually the head sets come with the torque specs.
I hope this helps you.
Posted on Apr 02, 2011
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