Tom Martinez Posted August 10, 2012 Share Posted August 10, 2012 I need to remove the heads on a 1931 Lincoln 385 flathead V8. There isn't really a proper shop manual available for these for these engines and all the documents and manuals I have, do not give a head torque value or the torque pattern. It's a 23 stud head. Is this information hiding somwhere out there? Does anyone have any general rules for torquing a big flathead like this?Any assitance or guidance is appreciatedTom In Ca. Link to comment Share on other sites More sharing options...
Owen_Dyneto Posted August 10, 2012 Share Posted August 10, 2012 (edited) I'd be guided by what the thread size is. I don't have any authoritative data from a Lincoln source, but most all flathead engines using 7/16-20 studs/nuts were about the same, in the range of 60-65 lb-ft.PS - again I don't have a pattern specific to the Lincoln, but all those patterns I've seen from a variety of makes were always in the form of a spiral starting in the center. Edited August 10, 2012 by Owen_Dyneto (see edit history) Link to comment Share on other sites More sharing options...
Friartuck Posted August 11, 2012 Share Posted August 11, 2012 Tom,Owen's response is precisely what I would recommend. Do the spiral method from inside out at 45 pounds, repeat for 55, and then final at 65 pounds. Link to comment Share on other sites More sharing options...
Johan Boltendal Posted August 11, 2012 Share Posted August 11, 2012 Hello Tom,Be aware of the fact that an oiled or greased nut or bolt, easily takes you up 10 to 15 pounds on the reading of 65.80 can be too much for the cast iron thread holes. Johan Link to comment Share on other sites More sharing options...
Tom Martinez Posted August 12, 2012 Author Share Posted August 12, 2012 Thanks for the responses guys, job done, I just did a test drive all looks well. I'm torqued down right now at 55 ftlbs, I think after reading Chrises post I'll go around one more time at 65. The reason I changed the heads on my Limo (not the green roadster in the picture) was because the heads that came with the car were cracked and poorly welded, cosmetic wise they looked like S**T, so I replaced them with a nice reconditioned set. Regards, Tom in Ca. Link to comment Share on other sites More sharing options...
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