I've hear of people doing a timesert for the spark plug in place. I know you risk leaving a few chips in there, but I bet if you had it done professionally, they would not take the head off (unless it was a dealer). But if you are dead set on taking that approach, heres what else I'd do:
1. Replace the plastic coolant fitting inder the intake and on the back of the head (M44 only)
2. Replace the water pump
3. Replace the thermostat
4. Replace the oil filter housing gasket and bush.
5. Replace the Valve cover gasket.
6. Have injector cleaned and new o-rings
7. Replace the squid (vacuum fitting to the injectors) |