[Homeoboxter]

During the holidays I had some time to work on the heads. The valves and seats needed a little resurfacing, so I added some grinding material on the valves and started the procedure with a conventional lapper.





I shortly realized this would take forever for all the 24 valves, so I looked for a somewhat quicker solution and I came out with this super-special tool using a piece of fuel line from my motorbike and a few hose clamps:



About 30 sec spin for each valve does the trick. Make sure you lube the valve guides before doing this.



Before/after conditions:




After another thorough shower in the sink the head is ready for reassembly with new seals.