I have a '05 Discovery with a Cat C7 330HP engine.
Just installed silverleaf VMSPC system, great investment!
So the cat owner's manual says to let then engine run for a few minutes before shutting down to let the turbo cool. The manifold temperature reading is supposed to give an indication of the state of the turbocharger as the manifold input air comes directly out of the turbo. When I am underway, the manifold temperature is between 90 degrees F and 152 (after going up a huge grade). I think the engine gives a warning at 180 F so I think my temperature range is ok.
When I shut down, the manifold temperature goes up immediately to approach the coolant temperature, obviously the turbo is no longer feeding air into the manifold.
I guess the question is, is there anyway to interpret the manifold temperature after shutdown to figure out if I am allowing the turbo to cool enough?
I am new to big diesel engines and am trying to figure out how to make mine last forever.