Classic cars forum & vehicle restoration.
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Timstopp
Joined: 16 Oct 2008 Posts: 98 Location: colchester, essex
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Posted: Fri Dec 19, 2008 11:31 pm Post subject: Head Torque |
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hi
I now need to take my head off my 1934 Wolseley 1l ohc engine to investigate a lack of compression in two cylinders. I have spare headgaskets, but have no idea of what I should torque the head to on reassembly. I was thinking about 45lb (gleaned from another thread on this forum for a Rily 1.5), but does anyone know for sure? or have a better guess?
cheers _________________ North Essex,UK - Morris 8 tourer 1936 - Jaguar x350 |
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ukdave2002
Joined: 23 Nov 2007 Posts: 4104 Location: South Cheshire
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Posted: Sat Dec 20, 2008 10:26 am Post subject: |
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Hi
The figure for my 1939 morris 8 is; 43lb, for ref it has 10mm head studs, and both head and block are cast iron.
Cheers Dave |
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Timstopp
Joined: 16 Oct 2008 Posts: 98 Location: colchester, essex
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Posted: Sat Dec 20, 2008 11:02 am Post subject: |
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Thanks Dave
Sounds like the low 40's is correct then, I wonder how much "margin of error" there is ie if I overtighten by 10lb,I pull studs out, undertighten by 5 and blow the gasket?
tim _________________ North Essex,UK - Morris 8 tourer 1936 - Jaguar x350 |
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ukdave2002
Joined: 23 Nov 2007 Posts: 4104 Location: South Cheshire
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Posted: Sat Dec 20, 2008 11:20 am Post subject: |
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Good question, I would tend to use the lower end inf there is a range, on the basis that a when studs snap the tend to be flush with the block and can be a real pain to remove, as a certain administrator of this site will confirm |
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