Anybody have any thoughts about using catch cans,I just became aware of them being used on daily drivers. Any validity to them or are they just the latest craze/gimmick ?
Last edited:
Catch cans
- Thread starter northcreek
- Start date
littleblazer
Member
- Jul 6, 2014
- 9,268
hockeyman
Member
- Aug 26, 2012
- 726
I have one on my 2006 Pontiac GTO and it catches quite a bit of oil that would have made it into the intake manifold. That being said, I'm not exactly sure about the intake setup on the 360 platform, but I did however modify the pcv setup on my GMC Acadia due to problems of excessive oil getting into the intake tube. It's not my actual video (below), but I did the same modification.
Thinking of it now, I might put a catch can on my Acadia...simply because I'm bored this week.
Thinking of it now, I might put a catch can on my Acadia...simply because I'm bored this week.
Last edited:
Mooseman
Moderator
On a V8, it might be worth it. Not sure if it would on the 4.2. It does have a vacuum line from the intake manifold to the crankcase but the vent hose under the resonator box connected to the valve cover, which is the one that spews the most crud. You can even find a pool of oil in the box sometimes. There's just one thing if you do add a catch can to the valve cover is that the PCM is programmed to compensate for the throttle body getting gunked up. So engineers knew that this was a flaw in the system. Then you have the vacuum line. So is there oil mist going through that one too? It might need two catch cans.
had r33 gtst with rb25det, stock intercooler and piping had layer of oil in them, went larger intercooler plus catch can and new piping never saw any oil in any of the pipings afterwards.
in many cars the oil mist binds with the soot from EGR and becomes a restriction in the end
in many cars the oil mist binds with the soot from EGR and becomes a restriction in the end
In the GMT360 Platform... The 4, 5 and 6 Cylinder In-Line Vortec Variants that suffer from finding Dirty Motor Oil inside the Air Plenum....the Cause and Origin involves Heavy Carbon Deposits in High Mileage Engines developing Excessive Blow-By from Trapped, Gummed Up Low Tension Upper Compression Rings.
The Excess Dirty Vapors build up enough pressure from deep within the "Boxy" Engine Block ...and serve to drive the Motor Oil swirling around the DOHC Valve Train and wind up escaping under that pressure through the Small Rubber Elbow in between the Upper Valve Cover and up inside of the Air Plenum.
From there...the Intake Vacuum on the 6 Cylinder Intake Strokes draws that Dirty Motor Oil in through the Throttle Body, right on Down through the Long Intake Manifold Runners ... past the Intake Valves and right back inside of the Engine to repeat the cycle often enough to cause other problems with compression and misfires.
Oil Catch Cans DO catch the Oil... but ultimately they DON'T solve the underlying problem. Look up all of the historic Threads where GMT360 Owners kept Posting the Question...
"Where is ALL of my Motor Oil Going?"
The most practical and useful solution is to use the ACDelco TEC (Top Engine Cleaning) Treatment procedures, well documented at these links to dissolve the "Gas Gum and Carbon Mung" holding those Upper Compression Rings -=tightly=- against the sides of the Upper Lands and Grooves of the Pistons and clean the Carbon Build Up from around the Valve Seats and the Piston Tops ...allowing Partially Burned Fuel Combustion By-Products to conduct all of this mischief:
PS... One of the ways to "Poison The CAT" (Catalytic Converter) is to wind up accidentally dumping in Hydro-Carbon Heavy Motor Oil into the Exhaust Stream. This activity can coat the Rare Earth Metal Impregnated Ceramic Honeycomb passages inside the CAT Can and create excessively HIGH TEMPERATURES during Catalytic Reactions and eventually, stressing and clogging it up enough to cause an exhaust restriction.
Refreshing the *Springiness* of those Top Compression Rings using the ACDelco TEC Procedures can improve things by helping to keep the Motor Oil where it belongs... Lubricating the Wrist Pins and Cylinder Walls ...and... Keeping the Gasoline Vapors within the Cylinders on the Intake and Compression Strokes... OUT of the Motor Oil that can ruin the Oil Lubricity and accelerate Engine Component Friction and Parts Wear. If you pull out your Dip-Stick and it has a heavy odor of Pure Fuel... it is yet another symptom of having the "Gas Gum and Carbon Mung" Problem.
The Excess Dirty Vapors build up enough pressure from deep within the "Boxy" Engine Block ...and serve to drive the Motor Oil swirling around the DOHC Valve Train and wind up escaping under that pressure through the Small Rubber Elbow in between the Upper Valve Cover and up inside of the Air Plenum.
From there...the Intake Vacuum on the 6 Cylinder Intake Strokes draws that Dirty Motor Oil in through the Throttle Body, right on Down through the Long Intake Manifold Runners ... past the Intake Valves and right back inside of the Engine to repeat the cycle often enough to cause other problems with compression and misfires.
Oil Catch Cans DO catch the Oil... but ultimately they DON'T solve the underlying problem. Look up all of the historic Threads where GMT360 Owners kept Posting the Question...
"Where is ALL of my Motor Oil Going?"
The most practical and useful solution is to use the ACDelco TEC (Top Engine Cleaning) Treatment procedures, well documented at these links to dissolve the "Gas Gum and Carbon Mung" holding those Upper Compression Rings -=tightly=- against the sides of the Upper Lands and Grooves of the Pistons and clean the Carbon Build Up from around the Valve Seats and the Piston Tops ...allowing Partially Burned Fuel Combustion By-Products to conduct all of this mischief:
PS... One of the ways to "Poison The CAT" (Catalytic Converter) is to wind up accidentally dumping in Hydro-Carbon Heavy Motor Oil into the Exhaust Stream. This activity can coat the Rare Earth Metal Impregnated Ceramic Honeycomb passages inside the CAT Can and create excessively HIGH TEMPERATURES during Catalytic Reactions and eventually, stressing and clogging it up enough to cause an exhaust restriction.
Refreshing the *Springiness* of those Top Compression Rings using the ACDelco TEC Procedures can improve things by helping to keep the Motor Oil where it belongs... Lubricating the Wrist Pins and Cylinder Walls ...and... Keeping the Gasoline Vapors within the Cylinders on the Intake and Compression Strokes... OUT of the Motor Oil that can ruin the Oil Lubricity and accelerate Engine Component Friction and Parts Wear. If you pull out your Dip-Stick and it has a heavy odor of Pure Fuel... it is yet another symptom of having the "Gas Gum and Carbon Mung" Problem.
Last edited:
