Catch Cans - I'm a Believer

[rayzazoo]

A 6.1L Heads without Catch Can at 36,000mi.
Background: (Another user) Pulled the intake off of a 2007 6.1L with 36000 miles. The engine has never had a catch can installed and as you can see there is a substantial oil build up. (reference the thread Why you need a catch can)


A 6.1L Heads with a Catch Can at 62,800mi.
Background: (Mine) I've had a Catch Can on since about 21mi on this engine. I just broke 62,800mi. I was noticing buildup around the gaskets which pointed me to replacing them. In all, I'm a catch can believer.


Intake Manifold Without Catch Can @ 32,000mi


Intake Manifold With Catch Can @ 62,800mi.


Key things to point out is the oil pool at the bottom of the runners on the pics without and the differences between the buildup around the injector ports.

With every oil change, I have collected at least 1-2 oz in the catch can.

Can't speak this from a performance standpoint, but from a pure maintenance standpoint, I'm a believer.

[OmahaRumble]

So glad I decided to get my Moroso catch can once I got my Predator. Very cool pics Razz, I had no idea that it made THAT much of a difference. Lots of skeptics on here. I always thought having a catch can made a lot of sense.

[Cuda]

Ports don't make much difference, there isn't really enough buildup to affect flow much, let's see the backside of the intake valve, that's what is important.

[Cuda340]

I'm a believer. For $100, the protection is definitely worth it. Besides, as an added bonus, they look great in your engine bay.

[Robo]

(sarcasm) Of course it's okay to keep all 16 spark plugs well oiled for better overall performance... who wants clean plugs these days - lol. I have the Moroso can as well (see signature pic) and do a lot of low speed city/highway driving.

[JS23V0B]

A catch can is a must from day 1 on these cars! That first picture shows that the engine was inhaling oil, never a good thing.

[rayzazoo]

Originally Posted by Cuda

Ports don't make much difference, there isn't really enough buildup to affect flow much, let's see the backside of the intake valve, that's what is important.

Without Catch Can @ 32,000mi






With Catch Can @ 62,800mi.


Key things to point out is the oil pool at the bottom of the runners on the pics without and the differences between the buildup around the injector ports.

[skialfs]

How many catch can threads do we need? Those who want them, buy them. Those who know we don't need them... don't ...enough already, these picture prove nothing.

[rayzazoo]

Originally Posted by skialfs

How many catch can threads do we need? Those who want them, buy them. Those who know we don't need them... don't ...enough already, these picture prove nothing.

*shrug* other than, the 32k mi heads/intake without catch can has more buildup and oil everywhere than the 62k mi heads/intake with catch can.

From purely a maintenance standpoint, I'd rather empty the catch can overtime at every oil change than have to pull my intake manifold off at 32k mi to clean the insides of it because of the oil buildup. The engine with a catch can keeps your intake tract cleaner for longer - based on the pictures provided, that's a proven fact.

The performance standpoint you can debate all you want and I really could care a less as there haven't been any facts showing how more or less oil in the intake tract affects performance on our engines.

What I do know is, based on my experience, regular maintenance and cleaning of the intake manifold is much easier and prolonged with a catch can than without.

[SRT8U]

Thanks for posting these pics Ray!