When removing guides from an air-cooled cylinder head, where you are pressing from the spring side into the port, I cut the guide away flush to the spring pad. I press the guide from here. This way the protruding guide material does not expand and damage the cylinder...
When chamfering valve springs, it's imperative that you don't hit the insides of any coils, which could lead to a stress riser and breakage. I insert a trimmed rubber pad to lift the tail away from the next coil and give me some room to work with the chamfering cone....
Having preset ball-head and profile cutters for jobs you repeat often, with specific seat profiles to match the valve job you want for a given head, can save time and money. Especially if you are adjusting a seat location different from the factory spec, over and...
Some Honda V-TEC engines have piston-loaded rocker arms that shoot out during disassembly. To avoid this, we loosen the bar a little, just enough to slide a rubber band under and tie it as shown in the picture. Luis Guzman Technomotors El Paso, TX
The hardest issue in dealing with LS heads is that most mechanics leave the head dowels inserted in position, and they’re extremely hard to remove. A simple solution is to insert a 14mm, tap in the dowels and twist as if you are going to tap. You can see that it...
When surfacing heads that have had brass tubes installed in head bolt or pushrod holes, I slip snug aluminum plugs in the tube to support them while cutting. This prevents the cutter bit from grabbing the tube and folding inward. This works great on any application...