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Engine Catch can

I am somewhat surprised at my results - I do my fair share of 5km drives. However, those short trips are serial trips with short stops in between so the car never cools down between trips. If that makes sense lol. It’s sorta like a longer trip.

I am still thinking of a can (precautionary as per R VelosterN) and have one on order that I linked to here ages ago.

What I don’t get is how / why they join a 9mm barb and a 15mm barb *with a single hose* lol. That and how the frack I get that second clip off - it’s buried so deep.
Davo01, There are two ways to install the catch can fitting from the PCV. You're going to have to loosen the intake manifold and drop it back to get at the entire fitting. Or you can just cut it off above the location where it juts out from between intake manifold and the head utilizing a barbed inline connector.

There is very good set of instructions for both. I'll try to find them and post the links here in this thread for you.

Cutting the PCV line;

http://www.boombaracing.com/content/Veloster N CC S2.pdf .
 
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This will probably my last post besides replying on this thread as I am pretty satisfied with the results I have gotten thus far with gauging how well the effects of a catch can work on these VN models. Information is very straight forward. My VN is now at almost 7K miles. I just did a DIY clear bra install and changed my oil at 6K miles. She is still running smoothly with no issues besides some possible gear grind and tough shifting under full throttle with gears 2 and 3. After changing my oil at 6K miles and capturing oil, the results were sent to Blackstone Labs for analysis. Everything checks out as normal and my fuel dilution was still less than <0.5%. I am now running Amsoil 0w-30 and this was my first oil analysis with Amsoil 0w-30. Blackstone stated that the viscosity is in the 5w/20 range. The captured oil also looked dark but still in pretty good shape. They recommended that I try extending my oil change intervals to 5K which is music to my ears. I also emptied my Mishimoto catch can and there was some apparent oil buildup around the outside of the micron filter (maybe will clean the filter soon?). The can contents were pretty consistent, still a lot of oil with what appeared to be a slightly higher amount of vapor as I am now driving in the winter months (more condensation of vapor because of the cold). I measured out the contents that were captured in the catch can to about 1 TBSP again so roughly 15ml. I also removed what I believe to be the pressure sensor for the intake manifold and temperature sensor for the intake manifold (somebody corrects me if I am wrong) in an attempt to use a boroscope to peak at the valves and noticed both sensors were coated in oil. I was also able to see very small puddles of oil within the intake manifold. Unfortunately with my cheap boroscope, I was not able to see the valves or turbine blades as I had planned. I will leave these images up to somebody else until I can get a more capable boroscope. I say all that to say that there is a good amount of oil vapor in these intake systems no matter which way you slice it. How you want to deal with it or ignore it is up to you. If you don't plan to keep the car past 60k miles you can prob. just ignore it. I plan to keep the car for life so I am being very careful with her besides the clutch dumps :) I am confident that a catch can is a good tool to use with this system to help mitigate carbon buildup. Hopefully, we can get some pictures of some valves soon! I will be getting a more expensive boroscope earlier next year. Good luck everyone!


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Is that the compact 90mL or the large 200mL Mishimoto catch can?
 
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Too bad they don’t do a kit for the i30N.

Is the layout that much different ?? Got any pics of the engine bay? This catch can isn't actually made for the Veloster N. The kit is actually made for the Veloster Turbo. However I found that the bracket fits perfectly next to the coolant tank. An added benefit is that the tank keeps the can very very warm.
 
There is a can made for the VN specifically. It's not Mishimoto but it comes with a bracket that can be utilized in the i30. I'll have to look for it again. I'll let you know.
 
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Worst case I ask my brother-in-law (a mech engineer with a sweet home workshop) to fabricate a bespoke one with me if I stretch the relationship or I make a simple one like Tarmo has advised me off line :)
 
Worst case I ask my brother-in-law (a mech engineer with a sweet home workshop) to fabricate a bespoke one with me if I stretch the relationship or I make a simple one like Tarmo has advised me off line :)

The coolant bottle and mounting look identical. I'm fairly confident that the Mishimoto bracket will do the trick. But if you have something specifically designed for the i30n then obviously go that route. See pictures below to see where and how I mounted my bracket. I only mounted it with one bolt. A little blue Loctite and it shouldn't move at all.

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I only mounted it with one bolt. A little blue Loctite and it shouldn't move at all.
The problem with mounting it on one point only is; eventually the bolt pressure and engine vibration on the plastic will crack the tab. Both bolt locations need to be mounted into place. With all the backwards and forwards movement from the engine, this movement is being transferred to the oil lines lines and on to the can itself.

Plus, the diagnostic port is blocked by the bracket alone. With access blocked, the constant tightening and loosening from the tech needing to get at the port, will cause premature wear on the plastic tab on the pressure tank. When it does crack, the tank will have to be replaced. Being the bracket is mounted on top of the plastic tab, more than likely Hyundai will not warranty the pressure tank replacement, due to modification causing the wear.

The pressure tank and it's mountings are made for occasional removal.

IMO Not really a good mounting point. Even less so with only one bolt holding it in place. It's simply not well thought out or constructed by Mishimoto for use in the VN/i30N or well executed either.:)
 
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Worst case I ask my brother-in-law (a mech engineer with a sweet home workshop) to fabricate a bespoke one with me if I stretch the relationship or I make a simple one like Tarmo has advised me off line :)

The diagnostic port was relocated. It is no longer in this location (I relocated it after I noticed it would be blocked months ago). No constant loosening or tightening will be required. This bracket was not designed for the Veloster N, it was designed for the Veloster Turbo. At the time I purchased the car I could not find a catch can with a micron filter for our vehicle. All the catch cans out at the time only had baffles. This is not Mishimoto's design, this is how I personally installed my can. The lines have a good amount of slack in them so I'm not worried about damaging the coolant bottle. To each his own if others are worried. To answer your question about the Mishimoto bracket - if you did want to mount it in this manner the Mishimoto bracket will work. A custom bracket by your brother-in-law would be dope though! :) Maybe you could use those two threaded studs that nothing is attached to near the turbo if the setup is the same on the i30N. See picture below for relocated diagnostic port (on the lower stud that had nothing attached to it - so convenient!!). And I'm not even sure the i30N has a diagnostic port located in this area. From photos of the engine bay I cannot see one. Let us know if there is indeed one there similar to the Veloster N!1560F2C5-BE2C-4F17-A318-A98C62F8E8A3.jpeg0C5C130E-E4D0-4CEC-BA62-6E8EFA3A7494.jpeg
IMG_7421 2.jpg
 
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To each his own if others are worried
I seriously don't believe anyone is worried here. However, what's been observed and commented upon is a statement of fact. It's just a poor set up, based upon the information and photos you've provided. If it was designed for the Veloster Turbo, then it was designed for that application and not the VN and i30N.

So it's reasonable to say, it won't work for the properly for i30N or VN and you've demonstrated this as well.
 
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I don't believe anyone is worried it's a statement of fact. It's just a poor set up based upon the information and photos you've provided. If it was designed for the Veloster Turbo then it was designed for it not the VN and i30N.

So it's reasonable to say, it won't work for the i30N or VN properly.

lol.
 
The Mishimoto can was meant to be installed behind the diagnostic port on the Veloster Turbo IAW their instructions and wasn't meant to be fitted to the VN or i30N.
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You can also say the same for the Boomba Catch cans and their questionable placement of the can @RVN. The two catch cans that I think have decent placements are the ADD W1 can and the Forge Header Tank(although I do think theres cutting and adding a new mounting bracket involved for us VN owners as the upper bracket for that tank is made to Fit the i30N.)
 
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Actually, the Boomba CC are almost ideally placed. The new mounts place them on either side of the front end of the engine compartment nest to the headlight housings. They'll stay warm along with the oil lines and are easily accessible for maintenance.

Both CCV & PCV include a dipstick for easy checking. I think they're a good bit of kit all the way around.