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Introducing Blow-by and the PCV System

Internal combustion engines are essentially controlled bombs; air and fuel combust to drive pistons and crankshafts.  One byproduct of this violence is power, but there are darker horses to contend with.  During combustion, high pressure on the top side of the piston pushes combustion gasses, as well as droplets of oil and fuel, past the piston rings and into the crankcase. This mixture is known as "blow-by."

To keep the crankcase from becoming pressurized, causing issues with oil sealing and robbing the engine of power, blow-by is pulled from the crankcase via the positive crankcase ventilation (PCV) system and routed back into the intake. 

Interested in purchasing this catch can? Check out our product page for more information!

Mishimoto Compact Baffled Oil Catch Can

The project is complete! We are very pleased with the outcome, and we expect a ton of positive feedback on this product. In fact, three or four of our employees have already reserved units for their personal vehicles. Speaking of " I should pick up one for my NB Miata!

The production quality catch can is now prepared for your viewing pleasure. Check it out below, starting with the base of the can.

Interested in purchasing this catch can? Check out our product page for more information!

Mishimoto Compact Baffled Oil Catch Can

Initial 3D rendering of Mishimoto Compact Baffled Oil Catch Can

So we asked ourselves, what makes a catch can appealing to the masses? In a market swamped with extremely low-priced options, a new product could easily get lost in the mix of products already available. Our team began sifting through forums and asking our contacts at local shops to see exactly what they wanted from a catch can. We also reviewed our current line of products, to see if we could develop a new design

Interested in picking up our Camaro SS catch can kit? Check out it at our online store!

Mishimoto 2016+ Camaro SS Catch Can

Our Camaro catch can project continues! If you follow our development posts on the forums, please be sure to cast additional votes for our bracket design and silicone hose color. We are interested in obtaining as much feedback/opinion as possible so we can bring to market exactly the kit you want to see. So far, we've inspected the stock systems, selected a catch can location, and designed our initial bracket prototype. The final developmental phase includes constructing our direct-fit lines that will run from the PCV to the catch can, and from the catch can to the intake manifold.

Before showing our progress with that, I'd like to cover some of the neat aspects of our catch can.

Mishimoto Baffled Oil Catch Can

Interested in purchasing this catch can? Check out our product page for more information!

Mishimoto Compact Baffled Oil Catch Can

Time to fabricate/prototype our awesome catch can design! We would be using our in-house fabrication equipment and our 3D printer to develop a plastic and metal prototype.

Prototype Fabrication

We began by fabricating the base of the can from aluminum. Dan set to work cutting, welding, and polishing the base you see below.

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Interested in picking up our N54 oil catch can system? Check out more details on our product page linked below!

BMW N54 Baffled Oil Catch Can Kit

After selecting a catch can location and fabricating a mounting bracket, we needed to fully install the can/bracket combo and begin putting together a set of CCV lines to complete our kit.

Catch Can Lid

Before doing so, the functional prototype of our catch can lid arrived for evaluation by our team. Check it out!

Mishimoto CNC-machined catch can lid

Interested in purchasing our new ND Miata catch can system? Check out our product page linked below!

Mishimoto Mazda Miata Baffled Oil Catch Can Kit!

If you've been keeping an eye on our blog or posts on the forums, you would notice some recent attention on ND Miata R&D. We have big goals to improve air inhalation for the 2.0L by way of a high-flow intake system, and we are knee deep in an awesome oil cooler setup, which will keep fluid temperatures in-check during track driving. Although this project might not be as neat in terms of testing data and added performance, it is equally important.

Why a Catch Can?

Catch cans and direct injection go together like Miatas and R-comps. You might not think you need it, but once installed, you won't want it removed. We've been designing direct-fit catch can systems for quite some time, for a variety

Interested in picking up our N54 oil catch can system? Check out more details on our product page linked below!

BMW N54 Baffled Oil Catch Can Kit

E90 Test vehicle engine bay

After evaluating the design of our first prototype and performing some additional research regarding customer needs, we were prepared to fabricate a second prototype. As noted toward the end of our last post, we would be relocating our catch can for easier servicing, and we would also be designing a new catch can lid to accommodate the larger ports for the N54 CCV system.

Catch Can Lid Prototyping

A teaser in our last post revealed the plans

Interested in picking up this awesome catch can system? Check out our product page for more details.

Mishimoto Ford Focus ST Baffled Oil Catch Can Kit

Ford Focus ST test vehicle

As you may be aware, our engineering team has been wrenching away on this Focus ST to develop a slew of awesome products for the community. Our oil cooler development is underway, and alongside this project we began to experiment with a direct-fit oil catch can system. Now, you may be wondering exactly how necessary such a product is.

Discussions around the community have covered the impact of oil within the intake system and its effect on valve buildup. In short, the

Interested in purchasing our WRX catch can kit? Check out more details on our product page linked below!

Subaru WRX Baffled Oil Catch Can System

The final kit is ready for installation! After months of development and test fitting, we finally had our completed prototype components ready for fitment verification prior to mass production. Check out all of the components below!

First, the passenger side catch can bracket for the PCV system.

Final PCV catch can bracket

Next up is the finished version of our dual port catch can!