DIY: Radium Oil Catch Cans

Ok. I need to settle this once and for all. Does the 5.7L tundra engine uses direct injection or sequential injection. I just order the radium catch can. Now I think I don’t need it anymore. If the gasoline with clean the intake valves I don’t think I’ll be needing it. I don’t have Supercharger.

 

There are alot of opinions on whether catch cans are necessary or not based on DI or not.
Regardless of engine style the PCV dumps un-necessary contamination into the intake to be burned in the combustion chamber. The intent of the PCV valve in a closed loop system is to minimize emissions and make the EPA happy. The pcv dumps moisture / oil and blow by gases back into the intake so it can be burnt in the next cycle in the combustion chamber.
For non-DI engines, fuel is injected into the intake and helps wash the moisture /oil/ gases into the combustion chamber and the fuel helps clean the back side of the valves. In DI engines there is no fuel to provide this cleaning task so buildup can occur in the intake and on the valves.

My opinion is that a catch can help minimizing the root cause of contamination before it gets to the intake regardless of fuel injection type.

I have a catch can on my Tacoma and have collected 8oz of fluid a month in the winter. Volume collection has been highest in the winter. Most of it is condensation but the can still stops the fluid from being dumped into the intake. I will be adding a can to the tundra soon.

 

Nice, there’s are some cabbage spent.

 

Ty for your input. I think I’ll just put it in when it arrives. I walnut blasted my bmw 335i. It took me two days to finish. Too much work. Don’t wanna do that again.

 

Just installed the radium catch can. Couldn’t route the hoses underneath the intake, but it works

 

What's the covering that you have over the hoses? Is that needed? I didn't put anything over mine.

 

It’s a DEI heat shield for the hoses. Preventive measures.
How did you route your hoses. Did you get it underneath the intake? Also are you catching anything from the crankcase?

 

I'll take a picture of the routing shortly. Crankcase can doesnt seem to catch anything yet after about 3200 miles.

 

My setup is a little different with the Magnuson, but here are some routing shots of both can lines (pcv, crankcase).

 

Nice! I digging that SC. Toyota warranty won’t cover that anymore huh

 

Any updates after several oil change intervals?

 

help me out here....

if you catch 1 quart of stuff in your can...are you now 1 quart low in oil?

or is this mostly humidity based blow-by?

 

It is probably a mix of the 2. I would guess you would be lower on oil by some amount but not a full quart. But if you didnt have this system, i would assume some of the oil that would otherwise not be caught would go back in and be burned off, but maybe not since it seems this engine already has a similar system built into it from the diagram I saw.

 

agreed.

I run 5k between oil changes & lose near zero oil. I can only surmise the stock PCV system is returning it to the pan.

The equation becomes imbalanced if I start taking quantities of oil away from the engine.

 

Kinda what I was thinking too. If the stock system is pretty much the same thing, except it actually puts the seperated oil back into the engine, then why should i completely remove it via the catch can?

I do 5K between oil changes as well and this last oil change the line on the dipstick was between the 2 marks but I dont think I lost any oil, I think I just didnt put enough oil in last change. I dont drive alot so it was close to 6 months and I cant remember if it was all the way up. This time, I changed the oil cold (took forever) and replaced the oil cold and it was at the top when i checked it after 15 min of letting it drain down. Will keep an eye on it through the summer. I would assume that if I end up consuming oil that its getting burned off and then maybe I will consider the catch can.

 

Much more humidity in the winter and pure blow by in the summer. Probably double your warm weather amount would be pretty close to the actual amount caught. Would be difficult to ascertain the difference on a dipstick.

 

Do we really need the CCase catch can for non supercharged 3UR? Noticed on the video by OP, no oil in CCase can even after 3,600 miles

 

Updated picture with my accumulation after 22K supercharged miles. This is all from the pcv can. The crankcase can is still empty.

 

Thanks AZTundra

 

I'm not the OP, but above is what I collected in mine. I had the cans installed at the same time as the supercharger, so I'm not sure how much they collect on a normally aspirated 3UR.

 

Thanks again. We did get the kit but I was wondering maybe another vehicle would benefit from the “other” can instead of the Tundra ‍♂️If your supercharged 3UR has an empty CCase can and OP’s NA 3UR is empty too. Thank you

 

it appears that it doesn’t put the missed oil back into the crankcase, but into the air intake of the engine. There is an internal separator, however it doesn’t appear to catch everything. The catch can isn’t removing what was caught by the internal separator

 

Mine is covered. But, I got it covered with the purchase of a new engine