Originally Posted by BillGrissom

Calm down guys, it is his engine and his risk to decide. He didn't say how hot he heated the IP. Why the need to keep delivery valves matched to IP ports? Aren't they just simple spring-loaded check valves? You do need to insure the parts are oriented correctly (isn't intuitive and FSM photos aren't super clear). That said, I have only removed #1 for drip timing and would keep them matched just for practice, but doubt it would matter. The main thing is to never loosen the 2 clamp-down nuts on the ports. That can throw off the volume adjustments that hopefully someone did on a Bosch injector test machine. As long as he turned over the IP while the delivery valves were out, it should have flowed any debris out of the ports. I have done the drip timing several times and never replaced the brass "crush washers" and have had no leaks. I just polish them a little on 600 grit sandpaper. I think the torque spec is just so they stay tight and don't leak, not rocket science. Does everyone always torque the injector tube nuts? Didn't think so.