Do I Need a Catch Can!
- Thread starter Gebo
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I honestly don't think you'll find anything close to a consensus on that matter here. Heck, I summed up my view already, with the OCD temptation to have one contrasted against the lack of real evidence as to what it actually accomplishes. Realistically, if they helped every DI engine out there, we'd have heard about it already. If it's port/DI hybrid, that's probably on it's own going to accomplish more than catch cans/premium fuel/low Noack oils/Italian tune ups or whatever else we might figure out here.
Originally Posted by Gebo
What I'm asking is do I need one with this particular car? I think it is a combination Port and Direct Injection set up on the engine.
No I have the same series of engine just bigger. Same setup. Not required.
What I'm asking is do I need one with this particular car? I think it is a combination Port and Direct Injection set up on the engine.
No I have the same series of engine just bigger. Same setup. Not required.
I have a Moroso one in the PCV line of my 5.3 Suburban. I get oily, watery stuff out it every oil change. Prior to installing it I had a couple of smoky startups because oil had lined my intake manifold. Hasn't happened again.
Here's the catch-can setup on the Z06 (LS6) ... simple. And I would get about an ounce of oil every 1000 miles, more if driven harder. And the LS6 was supposed to have an improved baffling system under the intake to help reduce oil flow into the intake. I was starting a project of replacing the valve springs, push rods, guide seals and rocker arm needle bearings with better aftermarket components.
Originally Posted by Garak
I honestly don't think you'll find anything close to a consensus on that matter here. Heck, I summed up my view already, with the OCD temptation to have one contrasted against the lack of real evidence as to what it actually accomplishes. Realistically, if they helped every DI engine out there, we'd have heard about it already. If it's port/DI hybrid, that's probably on it's own going to accomplish more than catch cans/premium fuel/low Noack oils/Italian tune ups or whatever else we might figure out here.
I am starting to come to that conclusion.
I honestly don't think you'll find anything close to a consensus on that matter here. Heck, I summed up my view already, with the OCD temptation to have one contrasted against the lack of real evidence as to what it actually accomplishes. Realistically, if they helped every DI engine out there, we'd have heard about it already. If it's port/DI hybrid, that's probably on it's own going to accomplish more than catch cans/premium fuel/low Noack oils/Italian tune ups or whatever else we might figure out here.
I am starting to come to that conclusion.
Are catch cans necessary? For some engines, it is a 100% engineering necessity for engine operation. Diesel engines that ingest their own crankcase gases, for one. Ask anyone who has ever worked on a diesel engine that had a failure of said system due to neglect. Awful mess, and exhaust smokes like a demon. If it's an EGR engine, it is also likely to completely occlude its grid heater (if it has one) with a pumice-like caking that is almost impossible to remove (treated by replacing grid heater completely).
Are catch cans necessary for gasoline engines? For some, yes. That's why they come with them from the factory. Turbocharged models in particular. German engines in particular. When the oil separators fail, they become complete cropdusters.
Are catch cans necessary on engines that never came with them? Age plays a larger role here. As blowby increases, so does an engine's tendency to put the engine oil straight into the PCV system. Witnessed plenty of engines capable of evacuating the entire contents of the crankcase in a single day. We have a gasoline NPR that used to do that. Does since rearranging the PCV system to draw out of an extended oil filler modified into a catch can. Other engines drive off of the edge of the world without ever having had one.
The larger role is the effectiveness of the design. Some catch cans are professionally engineered to do their job correctly. Some are just a bunch of over-glorified soup cans that really don't do anything at all, and cost a ton.
A proper catch can could likely help an engine from loading up with deposits, but few are far between are actually that.
Are catch cans necessary for gasoline engines? For some, yes. That's why they come with them from the factory. Turbocharged models in particular. German engines in particular. When the oil separators fail, they become complete cropdusters.
Are catch cans necessary on engines that never came with them? Age plays a larger role here. As blowby increases, so does an engine's tendency to put the engine oil straight into the PCV system. Witnessed plenty of engines capable of evacuating the entire contents of the crankcase in a single day. We have a gasoline NPR that used to do that. Does since rearranging the PCV system to draw out of an extended oil filler modified into a catch can. Other engines drive off of the edge of the world without ever having had one.
The larger role is the effectiveness of the design. Some catch cans are professionally engineered to do their job correctly. Some are just a bunch of over-glorified soup cans that really don't do anything at all, and cost a ton.
A proper catch can could likely help an engine from loading up with deposits, but few are far between are actually that.
Originally Posted by DoubleWasp
The larger role is the effectiveness of the design. Some catch cans are professionally engineered to do their job correctly. Some are just a bunch of over-glorified soup cans that really don't do anything at all, and cost a ton.
A proper catch can could likely help an engine from loading up with deposits, but few are far between are actually that.
+1.
The larger role is the effectiveness of the design. Some catch cans are professionally engineered to do their job correctly. Some are just a bunch of over-glorified soup cans that really don't do anything at all, and cost a ton.
A proper catch can could likely help an engine from loading up with deposits, but few are far between are actually that.
+1.
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