Klubman wrote:
to move the hole in the rocker post by 4.2 do you fill in the hole first then put in the new hole?
Sorry this is getting away fron the original topic but The Doc started it drifting off
Is this particular mod worthy of a place in the How to section?
OK, yeah this is drifting off topic a bit I guess..
There are 3 ways I know of:
1. Turn the rocker posts around, drill the rocker stud holes out to 10mm to clear the head studs.
I don't recommend this- there is little metal there to tighten the head nuts onto with the posts reversed.
OR-
2. Braze steel plugs into the rocker shaft holes, then redrill the holes accurately 4.2mm back (easy if you have a mill, like I do).
Works OK, I've done a couple of sets this way now. You cannot MIG weld these posts- they are sintered material and full of oil, but they do braze OK.
OR-
3. Get some 20x50mm flat steel bar, and mill up a new set of rocker posts.
Also works OK, did 5 sets like this but it's a heap more work.
I think this Toyota rocker mod is beyond most Mini owners, unless they have machining experience, a mill and a lathe. But if you want to try, do a search in the Mini Mods forum for `hi lift rockers' thread, or PM me.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.
