Need head torque for 1920s Austin London taxi

[Su8overdrive]

We need cylinder head torque figure for a 1920s Austin London taxi cab. Help, have searched in vain. My friend's car, and he's flummoxed. I'm unsure of exact year, so if they changed specs during the 1920s, please give both or all.

Thanks!

[Rusty_OToole]

Auto repair manuals used to have a chart in the back giving generic torque recommendations. They were based on the size of the bolt or stud. Machinists or mechanics books might have the same info. If you do not have any old manuals you might find such a chart online.

Cars of that era were not critical of head bolt torque. Few mechanics had torque wrenches. Compression ratios were low. If you tighten the bolts evenly in a spiral pattern it should be OK.

Here is a chart of Whitworth and BSF specs for Lister engines, your engine should be similar.

http://www.oldengine.org/members/diesel/articles/rrchapt8.htm

Edited April 27, 2011 by Rusty_OToole (see edit history)

[croydoncar]

Croydon minicabs