Forced Induction Superchargers | Turbochargers | Intercoolers

pcv question?? for you forced induction guys

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Old Nov 5, 2015 | 10:40 AM
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Default pcv question?? for you forced induction guys

do any of you guys just vent the valve covers?? or stick with a can???

thanks
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Old Nov 5, 2015 | 02:13 PM
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I plan to cap off the TB and stock VC openings. Going to drill the tops of the VC's and put fittings on them then, just run rubber hose to a vented Mighty Mouse catch can. Simple and relatively cheap
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Old Nov 5, 2015 | 04:14 PM
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I connected both valve covers with a 3/8 line. Then a single -12 on the pass side to a breather tank. I also have my valley cover port venting to the same breather tank.
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Old Nov 5, 2015 | 06:19 PM
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you guys got any pics???
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Old Nov 5, 2015 | 09:30 PM
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I have a MM car on my ls fox and my sr20 240. Great cans!

The mustang gets it pull from a -10 fitting in the down pipe.

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Old Nov 5, 2015 | 09:42 PM
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I have a -10 line in each valve cover run straight into the exhaust. Works great.
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Old Nov 5, 2015 | 09:45 PM
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Originally Posted by BOOSTAT4500
I have a -10 line in each valve cover run straight into the exhaust. Works great.
Post turbo I hope?
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Old Nov 5, 2015 | 11:09 PM
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I run a RX Monster can with a 1LE breather. It's been working great. If I were buying new now I would go with a Mighty Mouse setup or something custom like what LMR makes.
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Old Nov 5, 2015 | 11:16 PM
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I have nothing. I cut the end off an old stocking and zip tie it onto the pass side breather pipe.
Maybe I'm lucky, but I get no
blow by. The drivers side is just open, but was factory restricted to a small orifice on my L33.
I'd have a vented breather tank if I needed one.

I use that VB port as my boost reference.
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Old Nov 5, 2015 | 11:52 PM
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6 years boosted and have always just ran a breather in place on the oil cap and one at the rear of the driver valve cover. No issues ever
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Old Nov 6, 2015 | 08:40 AM
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Mighty Mouse PCV Catch Can here, works great and no oily smell while driving.
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Old Nov 6, 2015 | 10:02 AM
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Originally Posted by Busa_rob
Post turbo I hope?
Yes, post turbo and o2 sensors.
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Old Nov 6, 2015 | 02:36 PM
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Originally Posted by SPRAYED 01
6 years boosted and have always just ran a breather in place on the oil cap and one at the rear of the driver valve cover. No issues ever

does it blow oil all over the motor?? can you smell oil while you are driving??
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Old Nov 6, 2015 | 04:04 PM
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i have a ls6 intake with ls1 valley and pcv . I have a mightmouse can .
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Old Nov 10, 2015 | 02:11 AM
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No oil smell no burning no nothing just works perfectly.






Originally Posted by johnster
does it blow oil all over the motor?? can you smell oil while you are driving??
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Old Nov 10, 2015 | 10:46 PM
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There is a performance benefit to a proper PCV that lowers crankcase pressure during wide open throttle.

There is also an oil quality benefit to running proper PCV. A street car that see 3k miles/oil change needs a PCV system if it wishes to maintain it's oil quality.
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Old Nov 11, 2015 | 12:40 AM
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random PCV question- would a -8an be too small for dual valve cover to a vented catch can setup?? or go up to -10?
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Old Nov 11, 2015 | 12:43 AM
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I never thought of a performance gain with proper pcv. That has to be tiny.

I see your point on oil quality. I change mine about every 1500 so dont think its an issue.







Originally Posted by kingtal0n
There is a performance benefit to a proper PCV that lowers crankcase pressure during wide open throttle.

There is also an oil quality benefit to running proper PCV. A street car that see 3k miles/oil change needs a PCV system if it wishes to maintain it's oil quality.
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Old Nov 11, 2015 | 07:20 AM
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Originally Posted by SPRAYED 01
I never thought of a performance gain with proper pcv. That has to be tiny.

I see your point on oil quality. I change mine about every 1500 so dont think its an issue.
Big CID engines with blowers typically use a belt driven vacuum pump for a 2-5% performance boost, which is around 30-50 horsepower on those setups (making the cost/performance reasonable at that level)

for street cars running a pcv off their intake manifolds (or turbochargers) there will not be as much of a vacuum signal, but the benefit is still there to some degree, and is practically free so why not since it comes with so many other benefits like cleaner oil.

I highly recommend the exhaust driven version- if you can verify that it is working by logging the crankcase pressure over time.
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Old Nov 11, 2015 | 07:30 AM
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I have 2 3/8" hoses mounted straight up by the fuel rails that I can see through the cowl hood. If it starts going south I can see it early.
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