Crankcase breather(s) on supercharged car? - Ford Mustang Forum
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post #1 of 6 (permalink) Old 05-13-2015 Thread Starter
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Crankcase breather(s) on supercharged car?

I have a JLT catch can on my supercharged car. I was wondering if I should put a breather filter on the driver's side to replace the PCV. They also make one to replace the oil cap on the passenger side (since I can't put one on the passenger PCV because of the catch can). Is it a good idea to use one/both breathers or just leave it alone?

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post #2 of 6 (permalink) Old 05-13-2015
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Supercharged engines naturally have more blow by than a n/a application, it is usually best to let the PCV system function like stock but run a real breather tank on the other side. We do not suggest mounting the little filters on the valve covers, they will eventually become saturated and leak, which is smelly and a fire hazard if it drips onto the header. We offer a great plug and play kit for this very reason, it even includes a custom fitting that locks right into the factory valve covers for a simple and leak free install. They are available in silver or stealth black. Products 2011-2014 Mustang Parts MMR PN#455590 MMR Valve cover breather kit for 2011-2015 Mustang GT / F150 / BOSS and 2007-2014 GT500

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post #3 of 6 (permalink) Old 05-14-2015
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If you don't like breathers, a passenger side catcher is usually enough.

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post #4 of 6 (permalink) Old 05-14-2015
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I put catch cans on both sides of my engine for symmetry. The driver side never catches anything and I am supercharged.

But I knew that prior to the install.

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post #5 of 6 (permalink) Old 05-16-2015
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I recommend keeping the PCV system closed, so you can get the benefit of improved cylinder seal. UPR makes cans for both sides, but I'm okay with capping off one side and only running one can... assuming it's a good can.

What kind of blower are you running?

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post #6 of 6 (permalink) Old 11-27-2015 Thread Starter
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Its a Roush 2300 TVS and thanks for the input
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