This catch can is made of plastic with the exception of the hose fittings.
I had my reservations about a plastic catch can, but Corvettemods’ official response to me on that was that it should be able to withstand at least 300 degrees and that they haven’t had one warp yet, and that if it does for any reason, they will replace it. It’s 4” tall so it’s not very big.
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It has an arrow on the top part on both side which is supposed to help with the installation. The catch can actually looks really nice, and it’s the only clear catch can I’ve seen so that you can tell when you have to clean it out. The filter looks to be paper and is not removable. I can't really claim to know what kind of material it is, but it looks like paper.
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The kit comes with the catch can of course, an O ring that seals the catch can and the top portion, along with 2 feet of hose. It does NOT comes with hose claps.
Install
Install is pretty simple, but it wasn’t a 15 minute job as the site suggests. It took me about 30 minutes to install this, but not because it was hard. Mainly it was because the instructions were a little confusing and the Xeroxed pic in the instructions was hard to see so I couldn’t tell how to route the new line. Plus the pic with the final hose routing was a pic with the fuel rail covers in place so I really couldn’t see how it was routed.
I then tried coming on to CF to see if I could find a pic of an installed Corvettemods catch can and to my surprise, I didn’t any or a review. Maybe I didn’t search hard enough, but that prompted me to write one of my own.
So you begin by removing the passenger fuel rail cover and then remove the U shaped hose where the intake meets the throttle body. This is the hose that goes into the intake manifold from the engine. The picture in the instructions showing you where that is in the engine bay is pretty good. I’m pretty anal about how an install looks so it took me quite a while to get it situated exactly how I wanted which entailed cutting 7 inches of hose for the portion going to the manifold and using the rest of the hose (17”) to go to the engine. The thing I found a bit tricky was that the instructions say “The top of the can is marked with a small arrow to indicate “IN” flow. The coming from the engine is always connected to the “in” fitting. The hose going to the top intake manifold is always the “out” fitting (side with no arrow).
My problems were this:
1. There was an arrow on both sides of the catch can so there is no side with no arrow. Does side with no arrow mean the side that the arrow is not pointing to?
2. How does the arrow indicate in? Is the arrow supposed to indicate air flow or is it pointing to the IN.
I was thoroughly confused, so I blew air threw it and it worked both ways. So then I just tried to interpret the instructions the best I could and installed it as shown. I installed the hose going to the intake on the fitting at the pointy part of the arrow and the hose going to the engine on the opposite end.
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I know you guys might post your interpretations of what the instructions meant, but really instructions shouldn’t be left open to interpretation. There should be no confusion whatsoever.
The instructions also say that it can be mounted anywhere and that most let it suspend. I wasn’t comfortable to just let it suspend so I put some zip ties on it as shown.
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Now normally I don’t like having zip ties anywhere in the engine bay, but they were out of site under the fuel rail covers and added some extra peace of mind so why not. You be the judge.
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Performance
My 2006 C6, A6, Z51, LS2 had 14,344 miles on it when I installed the catch can. I then when on a cruise from Phoenix to Mt Lemmon which is about 3 hours+ away. This meant over 3 hours of non-stop driving in the Phoenix heat which is 110+ degrees. After a month and 500 miles of driving this is what I found.
Being an engineer, I’m also very anal about measurements so you know I had to get some exact ones. When I measured the amount of oil I captured in the catch can, I measured exactly 3mL of oil. So I would assume that after 1000, I would have 6mL. Of course your mileage may vary as every car is different in this aspect, but I would suspect that this amount is average. That right there is worth every bit of the $36 I paid. I also found that there was no warping and there was no leaking even though I didn’t use any hose clamps.
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The instruction then say to use throttle body cleaner to clean the filter. I don’t have throttle body cleaner, but I do have carb cleaner. I thought they were the same. I wasn’t sure about just spraying carb cleaner in my engine bay since that stuff splatters pretty good all over the place whenever I’ve sprayed it so I decided to leave the filter alone for now and maybe remove the catch can at a later date to clean it off of the car. If anyone have ever tried to remove the hoses off of those types of fitting you know it’s going to be horrible trying to remove it.
I did however try to clean the catch can with carb cleaner. I’m not sure if anyone else had this problem, but when I used the carb clean it turned the catch can to shyte. It frosted the plastic up and now looks like crap.
So I don't know about the filter, but I would not suggest cleaning the catch can portion with carb cleaner. Just use a shop towel and wipe it out. I sent an email to Corvettemods and their response on that to me was that this was an odd occurrence, and that if it leaks as a result, they will take care of it. However, sometimes looks are just as important as performance, especially with corvette owners which is what I replied with so we’ll see what they respond with.
The other thing I found when I was cleaning it is that some of the oil seeped through to the threads on the bottom. I'm not sure if this might be an issue in the future, but it's worth looking at next time I clean it out.
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