C7 Z06 Oil Catch Can sinnvoll?

[goec2468]

Auf den ersten Blick gefällt mir das LT Ventil besser

Strömungstechnisch ist ein Klumpen am Schaft schlechter, als am Ventilteller verteilte kleinere Klümpchen. Da die Ablagerungen sehr hart sind, ist die Frage was passiert im Motor damit, wenn sich ein größeres Stück löst.
Ein wenig Leistungsverlust ist ja noch zu verschmerzen und wenn man es merkt, kann man die Ablagerungen ja auch entfernen (lassen).
Schlechter ist es, wenn es zu Motorschäden führt.
Einige sind der Meinung, dass die Ablagerungen an den Ventilschäften zu klemmenden Ventilen führen können:

https://www.enginelabs.com/tech-stories/...train-fix/

".... it seems the LT has a much higher failure rate than the LS engines, even though they both use the same lifters (standard and DOD). These lifters can fail at any point, even at low mileage.
.... While many have come to blame the DOD lifters for all lifter failure, we have found that lifter failure occurs in these engines on both DOD and standard lifters equally.
.... The problem is that oil vapor sticks to anything that is hot and cooks on it, leaving behind carbon coke. The intake valves tend to gather tons of this gunk, which makes the stems sticky
.... What happens when the valve doesn’t move under load? All that load is now on the lifter roller and cam lobe. All that pressure leads to a weakened lifter cup, eventually stretching beyond its ability to hold the lifter in position
..... Installing a proper catch can should be the first thing you do to any Gen V engine. It is critical to stop as much oil vapor as possible from getting into the combustion chamber. Besides the intake valve issue, DI engines do not like burning oil. They can develop Low Speed Preignition (LSPI) from burning calcium, which has been proven to pop the ring lands off the tops of the pistons. ... "

Klingt für mich nachvollziehbar.