I have just checked my cylinder head as I had read in FP TOC tech 41 about the placement of the valve seal. The company I sent the head to for the valve seats to be replaced, installed the valves and the springs but didn’t bother with the seals.
So in the TOC tech article it says to place the seal above the collet. As I have never seen them fitted where abouts do they go?
From the diagram the seal is 456998 and it looks to go above the collet where the conical halves fit.
[attachment=0:1w5a5spa]Screen Shot 2014-12-17 at 13.17.38.png[/attachment:1w5a5spa]