What is the best way to remove and install the prechamber inserts on the 1.6 diesel heads?
Hammer and a drift, put drift down through the injector hole and hit it. Line up and tap back in when done, peen around it and your done.
The best way is to leave them alone unless absolutely necessary.
Andrew
This is true, I was going to ask why you wanted to remove them.
The head can and should be machined with them in place.