Hi Grumpy have done as suggested. I found an old heat shield of a B&S which was 0.047", not exactly the measurement but very close. Chamfered down all edges and glued it on last night with araldite, let it cure over night. Put it all back together today, turned motor over by hand a number of times, all that happened was as before the rocker arm tightens up but no actual valve movement, hoping i had done this right of course, or is this our way of saying that this 0.047" measurement needs to be bigger. Being that you said for a Honda it needs a lift of 0.054", then by rights we need almost double that for a larger motor wouldnt we?
