Just as the heads came back from the machinist. They had some cracks repaired, studs and air injection removed (it will now be blanked), seats recut and new exhaust guides installed. I was completely satisfied with the work.
Still I checked the clearances, just to see everything in order.
As the seats were recut, the springs had to be repacked. As the new seat is now more deep in the head, we will need to add shims and the set we had from the original engine will not be enough. I prefer to take
measurements with the springs installed. By measuring the distance from the top of the spring disk to the valve cap and adding 2.8mms, You can compare it to the factory data od 33.5 +/-0.3 mms. Nice half day game to get it all sorted.
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