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Catch Cans,  DIY,  Parts Knowledge

How to install a Catch-can

In our last post, we focused on what a catch-can is and how it functions. Now that you know everything you could want to about their operation, you want to install one, right?

Where do I start?

Take photos of your stock setup before taking anything apart. This will ensure you know exactly what was changed in case you need to back track.

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Take photos every step! You don’t want to end up with that 1 bolt you can’t quite seem to locate a home for.

Locating the PCV valve is easy on a majority of vehicles. You can easily find a guide online for most models.

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Our NC Miata is a bit of a pain and requires removal of the intake manifold.

Next, you’ll want to locate a good home for your catch-cans. Take care to avoid routing your hoses over anything hot if you don’t plan to add heat protection. Make sure your cans end up in an easily-serviceable location! You don’t want to disassemble half your engine just to drain your cans.

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We mounted our temporary setup in a location that is easy to access to make it simple to drain our cans.

Next, you’ll want to run your hoses.
Starting at your PCV valve, run a hose to the inlet on your catch-can. From the outlet port, connect a hose to your intake manifold where the PCV line originally ran. Turbo applications will benefit from an additional check-valve in this line to prevent boost from building up in the catch-cans. (See diagram below)

How to install a Catch-can
This diagram shows a basic PCV side setup in a turbo application. N/A vehicles typically won’t require the additional check-valve.

That’s it!

Bolt down any remaining parts that you needed to remove, such as our intake manifold. Clean up your bay and you should be all set! Catch-cans are relatively easy and can be installed by most beginner mechanics with a basic set of tools.

Feel free to reach out if you run into any troubles!

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