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tremins
06-06-03, 07:37 PM
Doe's anybody know the correct tightening torques for the cylinder head on my 8v 1.2 J reg nova.

mowgli
06-06-03, 09:33 PM
get a haynes book for reference, its worth it

dav
06-06-03, 10:58 PM
Torque the head down to 18 lb foot
turn a further 60 degrees stage 1
turn a further 60 degrees stage 2
turn a further 30 degrees stage 3
turn a further 30 degrees stage 4
let the engine warm up and then turn a further 30 degrees. stage 5
when torquing the head you have to start in the centre and work your way out. Good luck!

mikeoxford
07-06-03, 11:03 PM
ive only ever torqued mine 18lb

then three lots of 60 degrees tuyrns

(to makr 180 in total)

perhaps i never read the fifth stage in my haynes :? :lol: :roll:

brian
07-06-03, 11:15 PM
same as that mike.
i always torque 18lb then 60 degrees x 3. and the third is supposed to be after the engine is warm. and that is main dealer instructions

brian
07-06-03, 11:18 PM
opps meant to say the last 60 gets split into 30 x 2 so its
torque 18lb
60
60
30
warm up engine
30