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post #1 of 5 (permalink) Old 09-03-02, 06:47 AM Thread Starter
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Question Cylinder Head

Hi All,

Would anyone know the torque spec's for a 3.9 head cylinder on a 89 Falcon?

Thanks for any info.
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post #2 of 5 (permalink) Old 09-03-02, 07:00 AM
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Stage 1: 40nM(30pounds/foot) starting from the two inside bolts tightening all the other bolts in a spiral outwards to the outside bolts.

After all bolts have been tightened to 40nM do the following

Stage 2: In the same tightening sequence, tighten bolts a extra 90 Degrees of a turn(1/4 Turn)

You'll need a decent size wrench to do the last step as they get bloody tight. Also it's a good idea to use new head bolts and of course new head gasket.
 
post #3 of 5 (permalink) Old 09-03-02, 07:13 AM Thread Starter
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Cheers,
Was a bit unsure of the 90 degree part, assume you dont bother with torque wrench for 2nd stage,just a decent strong arm bar.
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post #4 of 5 (permalink) Old 09-06-02, 04:37 AM
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Correct; a torque angle gauge is also useful; it's easy to go over 90 degrees without one. Kinchrome sell cheap ones.

Regards Blue
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post #5 of 5 (permalink) Old 09-07-02, 04:23 AM Thread Starter
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cool Thanks

thanks for info guys
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