What's new
By:
5thGenRams Forums

Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!

Oil Catch Can on PCV Return to Throttle Body - are they worth it?

KJ6MTJ

KJ6MTJ

Member
Joined
May 27, 2019
Messages
11
Reaction score
5
Points
3
Age
50
Location
Elmore, AL
Considering adding an oil catch can on the PCV return line to throttle body. Would like some feedback if anyone has added one and if they found it being worth while. Was there any increase in performance? If so which brand do they recommend. I see where we can mount one easily off the head and the one Nishimoto brand that mounts to the radiator mounting bolt.
 
Isn't the Mishimoto is the 200 one that mounts to radiator mount isn't it with a grove that helps keep it in place? That one looks neat. Spell checker got me and called it Nish, vs Mish. I like the sound of keeping the intake clean. figured it might be something that I dump out per oil change. How often do you find yourself dumping that deal?
 
Personally I think it’s a waste of money. If we really needed these on the hemi, they would have them from the fact or design it differently. My third hemi going back to 2003 with last two over 150k with 2003 at 198k. Never had a problem on the intakes, never had them cleaned. Ran perfectly.
 
They make a big difference on a direct injected engine as there is no fuel going thru the intake valves, not much so one a normally injected engine.
 
Mirowpl said:
Personally I think it’s a waste of money. If we really needed these on the hemi, they would have them from the fact or design it differently. My third hemi going back to 2003 with last two over 150k with 2003 at 198k. Never had a problem on the intakes, never had them cleaned. Ran perfectly.
Click to expand...
I've worked on numerous 6.1's and the ones without the catch cans always had a good amount of oil sitting in the bottom of the intake. As for why not from the factory, money. As long as the engine can make it through the warranty period, why spend the extra money?
 
It's definitely not something that's needed. But honestly, what aftermarket mod is actually something that's needed? I like the idea of my intake staying cleaner, so I added a Mishimoto CC to my truck shortly after I bought it. I empty it each oil change. Like others have mentioned, there is a surprising amount of fluid in there when I change it. And the idea that I'm keeping that crud from going into my engine is comforting at the least, and worth the money.
 
I have a billet tech one on both of my rams. Is it needed? Probably not. Is it worth a piece of mind knowing everything if catches isn’t going back into the intake manifold, absolutely.
 
No needed, but it keeps your engine running cleaner and reduces carbon buildup and performance degradation over time.

And some more expensive and performance vehicles come with them from the factory, they have a drain that goes back into the oil pan so there is never a need to empty it.

Cheaper manufactures dont use them due to cost of the system.
 
Scram1500 said:
From a performance standpoint, technically, oil vapor can contribute to pinging and cause the motor to pull timing
Click to expand...

This is actually the theory/reason for me wanting to try one. My engine definitely pings still, even on 89 octane. I'm going to try it once the weather warms up and I feel "ready" to lean over my truck for a while, nothing worse than having the wind whip down your back.
 
silver billet said:
This is actually the theory/reason for me wanting to try one. My engine definitely pings still, even on 89 octane. I'm going to try it once the weather warms up and I feel "ready" to lean over my truck for a while, nothing worse than having the wind whip down your back.
Click to expand...
Sounds like you need things checked out. It should not be pinging that much.
 
I put a Mishimoto on within the first 500 miles. I empty it about 1/2 thru the oil change cycle and at each oil change. You don't need to empty it at the 1/2 point, but I just do. I find the most watery milking looking gunk during the winter months. I live in the midwest so winter weather conditions influence how you maintain your engines. I always change the oil at the end of Nov, and then again in early April when we are out of the cold for the most part. I don't have to drive a lot of miles, but the short hops in small town life requires a little more care.

If you live in a warmer climate year round, and drive longer distances daily, then you may not receive, as much benefit as I think I do. You definitely will not hurt anything, especially if you are one who tends to be a long term owner.
 
In theory oil vapors can reduce the effective octane of the fuel/air mixture in the cylinder, which can lead to spark knock. A catch can MIGHT help with that, but how much would it help in that regard? I don't think anyone has quantified that on these engines (at least none that (I've seen).

I don't run one on the RAM right now, but my wife's direct injected Honda has one.
 
Mirowpl said:
Sounds like you need things checked out. It should not be pinging that much.
Click to expand...
Unfortunately they won't do squat unless there is a code or there is a piston pushing through the block. It's right in the manual (paraphrasing): "some amount of ping is normal".

It is the most noticeable when the engine is at operating temp and when I'm pushing near or past 3000 rpms.

I'm convinced that many hemi's ping, I hear them in the summer as they roll by at a stoplight with my windows down. Of course it's impossible to know if they're running 87 or 89.
 
Out of curiosity which part of the country do you live? I am on the Nic coast and live 16 ft above sea level. Just thinking about elevation as a possible issue
 
I'm at about 1100 feet above sea level, medium to high-ish humidiity.
 
silver billet said:
Unfortunately they won't do squat unless there is a code or there is a piston pushing through the block. It's right in the manual (paraphrasing): "some amount of ping is normal".

It is the most noticeable when the engine is at operating temp and when I'm pushing near or past 3000 rpms.

I'm convinced that many hemi's ping, I hear them in the summer as they roll by at a stoplight with my windows down. Of course it's impossible to know if they're running 87 or 89.
Click to expand...
Mine will ping with 87 without fail. 89 is fine unless I'm pulling a trailer. I've actually used UNL88 (E15) without any issues and have the same experience as using 89, it's usually way cheaper than 89 (and sometimes 87) so nowadays I opt for that if available.
 
You must log in or register to reply here.

Users who are viewing this thread

Total: 1 (members: 0, guests: 1)

Site Vendors

https://www.jasonlewisautomotive.com/

Members online

Total: 272 (members: 9, guests: 263)
Back
Top