Results: 7,000 after catch can

[Vroom_vroom]

Originally Posted by Indydriver

The Clean Side Separator (CCS) performs the same function as the catch can, but only at WOT when vacuum reverses. Drag racers developed this filter after discovering the deleterious effect crankcase effluent has on the octane (read: power) of the cylinder charge. GM supplies it as OE on the 1LE as it is presumably purchased for track use where WOT will be a common occurrence.

So let me ask you this, can you run both pcv lines (clean/dirty) into the same catch can that's would be piped right into the intake on the dirty line?

[stoopid]

Why was SC#### suspended?

http://www.camaro5.com/forums/showthread.php?p=4471282

[GenF-GTS]

Originally Posted by Evergreen6

Can we PLEASE keep posting pictures of dirty intakes with no use case scenarios, and keep telling people (especially V6 guys with DI) that they need catch cans? Yeah, let's keep doing that. Especially pictures of engines not even produced by GM.

The picture i posted above is an LS1, the piston, exhaust port, intake port, intake manifold and aftermarket intake manifold.

All of them are from this forum i linked to it. All of them are the same car....the photos are dated.

[el ess A]

Originally Posted by stoopid

I'm pretty sure they charge for the service, so my guess... $$$ ?

You keep confirming my suspicions. Your guess is wrong, btw.

Your straw man arguments are weak and irrelevant in nearly every case. Your credibility as far as vehicle maintenance is shot, IMO.

[Evergreen6]

Originally Posted by el ess A

You keep confirming my suspicions. Your guess is wrong, btw.

Your straw man arguments are weak and irrelevant in nearly every case. Your credibility as far as vehicle maintenance is shot, IMO.

You do know that, even if you eliminated PCV entirely, that carbon will still build in an intake, right? Intake cleaning is just something that needs to be done periodically whether you have a catch can, or not.

Dealers will also sell you services you don't need, FWIW. I suspect you haven't interacted with enough service writers trying to give you a line about preventative maintenance that isn't called for, and where there is no evidence of it being needed.

Because the dealer sells a service isn't proof of anything other than they are in business to make money.

[stoopid]

Originally Posted by Evergreen6

You do know that, even if you eliminated PCV entirely, that carbon will still build in an intake, right? Intake cleaning is just something that needs to be done periodically whether you have a catch can, or not.

Dealers will also sell you services you don't need, FWIW. I suspect you haven't interacted with enough service writers trying to give you a line about preventative maintenance that isn't called for, and where there is no evidence of it being needed.

Because the dealer sells a service isn't proof of anything other than they are in business to make money.

[GenF-GTS]

Originally Posted by Evergreen6

You do know that, even if you eliminated PCV entirely, that carbon will still build in an intake, right? Intake cleaning is just something that needs to be done periodically whether you have a catch can, or not.

Explain how carbon builds up in your intake if you eliminated the PCV entirely.

[stoopid]

Originally Posted by el ess A

You keep confirming my suspicions. Your guess is wrong, btw.

Your straw man arguments are weak and irrelevant in nearly every case. Your credibility as far as vehicle maintenance is shot, IMO.

I don't post for your approval. Hater's gonna hate.

[GenF-GTS]

someone mentioned they wanted pictures of the LFX. http://www.drumchat.com/showthread.p...on-28822.html? 2012 Camaro V6 LFX with only 30k on the clock.

Oil and blow off in air intake tube- '12 Camaro V6 LFX:


Oil and blow off at throttle body- '12 Camaro- V6 LFX:



Carbon build up on intake runners and valves- '12 Camaro V6 LFX:

[Evergreen6]

Originally Posted by GenF-GTS

Explain how carbon builds up in your intake if you eliminated the PCV entirely.

Gasoline contains carbon.

No really, that's the simple answer.

When it's burned, carbon emissions are produced and they aren't entirely contained to the exhaust side of the engine. But to make matters worse, the EGR system (Exhaust gas recirculation system) belches unburned/partially burned exhaust gases right back through the intake as well.

So, even if you eliminated PCV and EGR, you'd still get carbon buildup. Old cars without those systems suffered from carbon buildup even worse because carburetors are comparatively inefficent in how they mix air/fuel, and valve event timing wasn't as tuned (or even variable) as it is in modern vehicles.

[GenF-GTS]

1 issue carbon build up doesn't stick to polymer intake manifolds you claimed it would. Even if you eliminated the PCV.

This thread also isn't in the LFX section not all of us have EGR systems.

[Evergreen6]

Originally Posted by GenF-GTS

1 issue carbon build up doesn't stick to polymer intake manifolds you claimed it would. Even if you eliminated the PCV.

This thread also isn't in the LFX section not all of us have EGR systems.

Most (all?) modern gas production vehicles have some kind of EGR system.

The bigger issue is carbon on the valves. Those aren't polymer. Carbon will still build on the valves (and I'd suspect in a polymer intake as well, as it's rarely "pure" carbon that's created, but rather, carbon compounds).

The LFX doesn't have an external EGR. It's integrated somehow, but the process is the same. I won't pretend to understand it--not going to pretend I know by googling how it works--but exhaust gases are still blown back through the intake. And then there's still the issue of combustion with a carbon-based fuel.

I see we've unearthed pictures of a 3 year old LFX that's horribly coked up. Once again, if everyone was seeing that kind of buildup by 30k, there would be mass hysteria. I'm not sure a catch can would have saved the effort there.

[GenF-GTS]

In these DI engines the "possible" outcome.......many miles down the road is the carbon build up can start breaking things.

As an example it can wear out/break the valve seals, after which point the valve stems can start rubbing/grinding thinner and eventually break and drop a valve.
The carbon could go past the worn out/broken valve seals and clog up a spring after which point the spring could break, depending on how it breaks this will also total the engine.

During all of these miles fuel consumption will increase, the valves can and probably will stick/float eg not open or close at the normal rate governed by the camshaft.

Other car manufacturers like Toyota are starting to develop engines now with additional fuel injectors either pointing at the valve like regular injection to clean the valves or at the throttle body in an effort to clean the valves from this position. So on this engine at a guess it's probably injecting 5-10% of the fuel requirement from regular injection and 90-95% via direction injection.
Either way the problem yes PROBLEM is known by car manufacturers and they are trying to solve it completely.

A catch can helps the situation key word is "helps" as a simple example and this is just an example if you were to travel 1000miles with no catch can you will build up 2g of carbon on your valves. If you traveled the same distance with a catch can you will build up 0.5g of carbon on your valves.
If the failure point on your engine because of carbon issues is say 250,000 miles then the failure point on the same car with a catch can is going to be higher. 1,000,000 miles.

Again this is just an example.

The next issue because of this is fouling the plugs...given you should be changing them at regular intervals however new compared to ready to change can get pretty bad like this one.


And given your engine is direct injection the same happens to the injectors, altering spray patterns and effecting consumption.

[Indydriver]

Originally Posted by Vroom_vroom

So let me ask you this, can you run both pcv lines (clean/dirty) into the same catch can that's would be piped right into the intake on the dirty line?

No.