A stupid newbie question. Would a catch can be appropriate for a base level SXT with the 3.6l engine? I can understand why those with the higher end hemi engines would take the extra precaution. I am not sure if the 3.6l engines have the same issue. Like I said, a stupid newbie question.
I think you are right - on my Dakota the PCV dumps ahead of the TB but in our Challenger that aspect isn't an issue for the TB its still a problem for the intake.A couple of comments. It seems like keeping the throttle body clean would not be an issue because on the 5.7 hemi doesn't the PVC system dump in past the throttle body? I know I cleaned the throttle body on one of my sons previous cars but that was due to the EGR dumping in near the throttle body.
I'd love to see some testing done on catch cans. How much does it really prevent engine knock at full throttle, if any. How much cleaner does it actually keep the intake and top end of the engine, if any. My guess is it would cost big bucks to do this long term testing and until then we are all just guessing.
Simply because it has to be dumped on a regular basis, and many owners don't properly service their cars, and if you do not regularly dump it, it will be an engine disaster!Why wouldn't they install these from the factory?
Bottom line I would rather not have that junk coating the inside of the intake or depositing on the intake valves. But hey that is me do what you want.This is an old post but one of the best explanations of a catch can. Being an engineer I understand the principle behind it. But is it really needed for a "normally" operated vehicle? I have a 2012 Grand Cherokee with 5.7L and 48K miles. I also own a 2019 Grand Cherokee with 5.7L and 20K miles. No issues with either. A normally operated vehicle i.e. Sunday driver is a catch can really necessary and what are the "real" and "measurable" benefits of operation (not just I dumped X amount of fluid monthly, etc.)? Or is this something along the lines of other "upgraded" components for performance/racing or just "a visual" option? Doing some research they are not inexpensive but what is the ROI (return on investment)? Bottomline - improved fuel economy? Otherwise it is just a "nice to have" addition.