It might work on some valves but not on all. Stuff like this is not a one size fits all solution, if it was then there would be no problems.
A simple 20 min run at 3K RPM and its all set. No its not working like that.
In some turbo/boosted engines they are using sodium filled or titanium valves on the intake not just the exhaust so the valve is designed to dissipate heat quickly. IIRC even the LS engines are using titanium intakes.
You will not bring these up to the temps that would be needed.
The other point is its not just the rear of the valves that is an issue, its the whole pocket.
No way are you getting that area up to those sorts of temps.
This procedure was probably intended for one group of engines, when info like this gets out in the wild it has a habit of becoming the be all and end all fix for every engine.
A simple 20 min run at 3K RPM and its all set. No its not working like that.
In some turbo/boosted engines they are using sodium filled or titanium valves on the intake not just the exhaust so the valve is designed to dissipate heat quickly. IIRC even the LS engines are using titanium intakes.
You will not bring these up to the temps that would be needed.
The other point is its not just the rear of the valves that is an issue, its the whole pocket.
No way are you getting that area up to those sorts of temps.
This procedure was probably intended for one group of engines, when info like this gets out in the wild it has a habit of becoming the be all and end all fix for every engine.