Catch can?

[Crianor]

I think I have a workable solution for the issue of average drivers not emptying it. The catch can could be on a line that has a bypass. When it's full, a relay trips, closes the line to the catch can circulating the remainder back to the engine. At regular oil I terval changes, the catch ca. Could be emptied by the dealer or service shop. It wold be somewhat similar to the EGR systems.

Also include some kind of water separated so that only oil is in the catch can. It would make the change frequency less.

 

[BlackRamHemi]

Let's do some math: The 5.7 @ 2000 rpm moves about 4500 liters (160 cu ft) of air through the engine.Every.Single.Minute. Driving 1000 miles @ 70 mph takes about 14h. 14h x 60 min x 4500 liters = 3.78 million liters (134400 cu ft).

Imagine the content of the catch after 1000 miles dispersed in the calculated amount of air, and it's clear why engine designers don't bother with keeping the oil out of the intake.

It's not about the amount that goes through the system,
its about the crap that stops part way through and accumulates in the intake runners instead of being burned off.

Just like it accumulates in the can, I have seen the underside of an intake manifold that has a nasty build up.
Not only does this effect the efficiency of the intake air flow, the oil starts dripping into the combustion chamber in droplets instead of just a vapor now.

People spend more than $100 washing their Rams on the outside,
why not keep the inside of your engine clean too? You could Sea Foam it regularly, but that cost $$$ too.

Some spend thousands on pretty cosmetic mods that do absolutely nothing,
So why all the fuss over a hundred dollar machined polished aluminum piece that looks fantastic and actually does something ?

It will likely out last any other part on the truck,
will never need upgrading or replacement.

The way some here try to argue against one,
you would think it was like they were being asked to throw it away and get a new one (like an oil filter) every time it gets dirty.



If you can't afford a one time $100 purchase,
maybe you should have a $15k Fiat 500 instead of a $50K Ram.

...oops , spoke too soon, they are doing catch cans now too lol

Oil catch can???

okay, I give up...buy one/don't buy one I don't really giva****

I've been avoiding all these catch can threads here (worse than any other Ram forum) until now, and just realized why.

 

[BlownGP]

If you can't afford a one time $100 purchase,
maybe you should have a $15k Fiat 500 instead of a $50K Ram.

...oops , spoke too soon, they are doing catch cans now too lol

Oil catch can???

hahaah. Yeah I really want to run a catch can now. lol

 

[TylerB]

It's not about the amount that goes through the system,
its about the crap that stops part way through and accumulates in the intake runners instead of being burned off.

Just like it accumulates in the can, I have seen the underside of an intake manifold that has a nasty build up.
Not only does this effect the efficiency of the intake air flow, the oil starts dripping into the combustion chamber in droplets instead of just a vapor now.

People spend more than $100 washing their Rams on the outside,
why not keep the inside of your engine clean too? You could Sea Foam it regularly, but that cost $$$ too.

Some spend thousands on pretty cosmetic mods that do absolutely nothing,
So why all the fuss over a hundred dollar machined polished aluminum piece that looks fantastic and actually does something ?

It will likely out last any other part on the truck,
will never need upgrading or replacement.

The way some here try to argue against one,
you would think it was like they were being asked to throw it away and get a new one (like an oil filter) every time it gets dirty.



If you can't afford a one time $100 purchase,
maybe you should have a $15k Fiat 500 instead of a $50K Ram.

...oops , spoke too soon, they are doing catch cans now too lol

Oil catch can???

okay, I give up...buy one/don't buy one I don't really giva****

I've been avoiding all these catch can threads here (worse than any other Ram forum) until now, and just realized why.

Hey now, I have a Fiat! I, won't be putting a can on it though, it's staying stock.

 

[BoldAdventure]

After a drive to the Smokey Mountains and back.

 

[doz]

After a drive to the Smokey Mountains and back.

Doesnt matter. If you read the post a few posts up from yours, he clearly explains that the small amount of oil that flows through your intake is nothing in retrospect.

Everyone has their theories and ideas. I dont believe it helps performance but I firmly believe that it keeps the interior of the engine cleaner and I dont think anyone can refute that. Move along, get over it. It does its job. Whether its worth $100 to you or not, well thats your choice.

I personally see 22" wheels as a waste on a truck. Everyone has opinions.

 

[homeguy]

You can't really be serious? This would help in the long run though, no?



Anyone know if they make a catch can for the v6 3.6l?

I'm interested too. Just picked up another JKU.

 

[JohnD72]

I'm interested too. Just picked up another JKU.

I don't know that there is a custom can for that particular engine, but there are many universal ones out there. Mount it wherever you want, run two hoses to it and you're done.

 

[B-Shot]

I think I have a workable solution for the issue of average drivers not emptying it. The catch can could be on a line that has a bypass. When it's full, a relay trips, closes the line to the catch can circulating the remainder back to the engine. At regular oil I terval changes, the catch ca. Could be emptied by the dealer or service shop. It wold be somewhat similar to the EGR systems.

Also include some kind of water separated so that only oil is in the catch can. It would make the change frequency less.

A CAN-bus catch can with its own CCL(check catchcan light)

 

[greg4ram1500]

It doubled my gas mileage.

You can go on thinking that if it makes you feel good! LOL

 

[moparrtguy]

Just emptied mine for the 2nd time since I installed it. This is how much has been collected total in 3k miles.

 

[jstacey8]

only other question to ask i guess is how hard are they to install?

 

[moparrtguy]

only other question to ask i guess is how hard are they to install?

Really easy, the hardest part is removing and replacing the engine cover and intake tube. Took me 30 minutes but I was cleaning parts as I put them back on, my OCD wont have it any other way.

 

[dtru1222]

If I say I'm serious about doubling my gas mileage due to a catch can, I'm sure there are some that will believe it. To say you can get even 0.5 mpg increase is about as absurd.

I'll sell my truck before any POtENTIAL benefit (85,000miles, when warranty expires).

Let's do some math: The 5.7 @ 2000 rpm moves about 4500 liters (160 cu ft) of air through the engine.Every.Single.Minute. Driving 1000 miles @ 70 mph takes about 14h. 14h x 60 min x 4500 liters = 3.78 million liters (134400 cu ft).

Imagine the content of the catch after 1000 miles dispersed in the calculated amount of air, and it's clear why engine designers don't bother with keeping the oil out of the intake.

Thats just one scenario and it doesnt really capture the whole picture. The real test (and proof for me) is logging your knock retard without one, then logging with. The reduced knock retard is all the proof one should need to show the benefits.

Every 1 degree of timing retard = roughly 5hp. On my stock 5.7 I was getting up to 9 ST and 1 LT knock retard. Thats upwards of 40hp robbed through knock.

First I added more octane, running 93 I was still seeing knock. Adding a catch can further reduced the timing retard. Does it ADD performance? No, but it helps to allow you to run at the performance your engine is rated at.

Also, reducing the knock retard increased my MPG, so it is not absurd to say that a catch can could have an impact on fuel economy. They all tie into each other.

Look at any comparison of an intake manifold or the tops of pistons that are using a catch can vs those that are not. Reduced oil pooling in the manifold and carbon buildup on the piston would benefit anyone, even daily drivers.

 

[JohnnyDollar]

Again, not saying that they don't stop the sludge from going back into the engine. My question is whether or not that results in a longer life for the engine.

Think of it this way, eating a pound of salt in one sitting will kill you. But take that same amount of salt and eat it over a month or two, no impact.

I go back to one of my first comments. I would like to see an actual long term test done and see what the results are. What is the actual long term benefit. Keeping sludge out is only a benefit of having it in your engine causes damage or excess wear and tear.

Eat a pound of salt in one month and stop, may have no impact,
but continue eating a pound of salt each month, and eventually it will have an impact on your health.

My thought is that I have an air cleaner to keep crap out of my intake, yet the PCV is spitting nasty oil into my intake.

While I don't necessarily think the oil being spit into the intake reduces engine life, I do think a Catch Can keeps things cleaner.

I am not sure why I think cleaner = better.

Of course, I also did the cabin air filter mod. Not sure why the engineers at Ram thought it was not necessary to have one. I can see that it collects a lot of dust and small debris, it seems to keep the interior cleaner.

However, I also realize there is no evidence that it makes the truck last any longer and instead of adding it, I could simply clean the interior more often.