TEF 20 question

Looking for the torque sequence i should be following when installing the head on my standard 20C. My manual states 75-80 ft/lbs in sequence, then doesnt show the sequence. Thanks!

It doesn't have to follow any exact sequence. Just start in the middle and work in a circular pattern outward.

I like to start with a snug down, then go about 1/2 torque, then full torque, then full torque again. I'll then go back with a run through that I can be sure I didn't miss any, like all down one side, all down the middle, etc.

After that adjust the valves, start it up, bring it up to temperature.

Then go back to the circular pattern with a retorque, backing each bolt off just enough to feel it turn but not relieve pressure, then tight to specs. Then readjust the valves.

I have a photograph noting the sequence that is in the original Ferguson Factory manual , unfortunately it is too obscure to photograph . There are 22 studs which surprised me .
Yes the 2 in the middle are the start , one from either side , but there is no discernible circular pattern after that , at least not for this head .
It is the most peculiar sequence I have seen , there must be a reason for it and so I would be cautious about tightening it down before you are certain .

I found this explanation from the late Jon Audur , a respected Ferguson enthusiast that , during his life has helped me and countless others over the world . He obviously had difficulty reproducing the workshop manual photograph as well and so came up with this accurate description to follow .

''Draw two paralell lines about 6" long and have abot 3" distance betwen them
Now draw four paralell lines between the first ones with even distance
With the paper in front of you --one end to right mark small circles on the four inside lines on the furthest(Uppermost) one mark four circles and number them from LEFT of paper 18--8--5--15--
next five circles on next line from left,--20--10--2--11--21 then next line 7 circles and mark from left 16--14--6--4--3--7--13--17-- and on last line from left, 22--12--1--9--19--,
This is the sequence of tightening the cylinder head nuts i.e first no 1 then no 2 then no 3 and so on .Tighten them evenly go about four or five timesover tightening a little at every turn use Torque meter tighten the nuts to a final torque of 75--80lb.ft
All this is quite a work.
If thevalve guides are worn I suggest you take the head to a repair shop for replacement of guides (if necessary) for fixing the leakage problem in the head !
Cheers
JonAudur''

Thank you gentlemen. Have the head torqued down, next is to hook up a coolant system and try to start it!