Engine breather filter? - Toyota Yaris Forums

rabbito · 07-14-2016, 02:13 PM

anybody using one these engine breathers on N/A engine? any gain? let me know the detail please, thanks

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Jason@SportsCar · 07-14-2016, 03:19 PM

Quote:

Originally Posted by rabbito

anybody using one these engine breathers on N/A engine? any gain? let me know the detail please, thanks

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If you think that provides a power gain you have no idea what it is for.

CoryM · 07-14-2016, 03:24 PM

The only reason to install a vent is if your PCV system cannot keep up with the crankcase pressure. Typically only happens on boosted engines, or sometimes if the motor is doing high-RPM track-days (or if the rings are badly worn). There are some vehicles where the PCV oils will clog up various parts of the engine, and I would consider modifying or removing the system, but the Yaris is not one of them.

I'd spend your money elsewhere unless I am missing something.

Cheers.

ern-diz · 07-14-2016, 04:06 PM

Quote:

Originally Posted by Jason@SportsCar

If you think that provides a power gain you have no idea what it is for.

Pulling no punches lol.

Almost make a non-gear head like me afraid to ask questions. Almost

SirDigby · 07-23-2016, 08:34 PM

i'm pretty sure these filters just leave your crankcase unpressurized. (?) I don't see an advantage except the crank vapors do not get vented to the intake system. I would think you'd want the crankcase to remain pressurized during high acceleration to reduce piston blow-by, and this is the reason I would not use one of these...

07-14-2016, 02:13 PM	#1
rabbito View User's Garage Drives: 2012 Toyota Yaris Sedan (Vios) Join Date: Dec 2015 Location: Thailand Posts: 291	Engine breather filter? anybody using one these engine breathers on N/A engine? any gain? let me know the detail please, thanks Sent from my SM-J700F using Tapatalk __________________ Brain: ATD E85 Timing Advance ECU Engine: 1JZ Injectors, Header, Center Pipe, K&N Drop In, E85 Injector Converter Suspension: Hankook Tires, Performance OEM replacement Shocks & Springs F: 1.5 B: 1.4, Mu Spec brake pads, Front tower & Rear sway bars, Rays nut & lock Electric: Volt Stablizer & Multi gauge obd2 Cosmetic: Toyota red emblem

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07-14-2016, 03:24 PM	#3
CoryM Drives: 2009 5-door, 5-speed Join Date: Sep 2011 Location: White Rock BC Posts: 687	The only reason to install a vent is if your PCV system cannot keep up with the crankcase pressure. Typically only happens on boosted engines, or sometimes if the motor is doing high-RPM track-days (or if the rings are badly worn). There are some vehicles where the PCV oils will clog up various parts of the engine, and I would consider modifying or removing the system, but the Yaris is not one of them. I'd spend your money elsewhere unless I am missing something. Cheers.

07-23-2016, 08:34 PM	#5
SirDigby View User's Garage Drives: 2007 yaris 3 door Join Date: Sep 2015 Location: Denver, Colorado Posts: 1,000	i'm pretty sure these filters just leave your crankcase unpressurized. (?) I don't see an advantage except the crank vapors do not get vented to the intake system. I would think you'd want the crankcase to remain pressurized during high acceleration to reduce piston blow-by, and this is the reason I would not use one of these...