pressure

[mankeymanOK]

What pressure should I have my DM4 at

[DagNasty]

tank pressure - ideally - low output will save consumption, but high output works just as well.

HPR - should be around 180psi

LPR - just about (or a little under) 5 turns out

[Schwa]

Originally posted by DagNasty
tank pressure - ideally - low output will save consumption, but high output works just as well.

HPR - should be around 180psi

LPR - just about (or a little under) 5 turns out

5 turns out, as in 5 turns out from being totally tightened?

And how do you konw what the HPR is set at with no gauge?

[DagNasty]

sorry to respond late.

Turn the lpr in until it is resonable tight.. (turning it in all the way seems to shred the oring a bit) then back it out about 5 turns. That should set you around 75psi. From there make minor adjustments as needed.

the hpr will set correctly when your velocity is acceptable at the chrono. from there set the lpr.