Mighty mouse catch can
#1
Safety Car
Thread Starter
Mighty mouse catch can
So after talking to them and explaining I had to much crank case pressure and I needed to vent it and asking if the race can was the right one I ordered the race can. Now Dave say it's the wrong one and I need the PCV can. What is the difference between the two cans? Now mind you I think he needs to have a phone number to call bc trying to resolve issues through FB msg or email is annoying as all hell.
#5
Yep, you need the PCV.
Race - Just catches oil and vents to atmosphere.
Draft - Collects oil and vents it back into the blower/turbo inlet
PCV - Vacuums the crankcase when not boost, when in boost the check valve doesn't allow boost into the can resulting in boost loss/pressurized crankcase.. and the breather has a giant check ball on it to vent when not under vacuum.
Race - Just catches oil and vents to atmosphere.
Draft - Collects oil and vents it back into the blower/turbo inlet
PCV - Vacuums the crankcase when not boost, when in boost the check valve doesn't allow boost into the can resulting in boost loss/pressurized crankcase.. and the breather has a giant check ball on it to vent when not under vacuum.
#6
Safety Car
Thread Starter
Yep, you need the PCV.
Race - Just catches oil and vents to atmosphere.
Draft - Collects oil and vents it back into the blower/turbo inlet
PCV - Vacuums the crankcase when not boost, when in boost the check valve doesn't allow boost into the can resulting in boost loss/pressurized crankcase.. and the breather has a giant check ball on it to vent when not under vacuum.
Race - Just catches oil and vents to atmosphere.
Draft - Collects oil and vents it back into the blower/turbo inlet
PCV - Vacuums the crankcase when not boost, when in boost the check valve doesn't allow boost into the can resulting in boost loss/pressurized crankcase.. and the breather has a giant check ball on it to vent when not under vacuum.
Last edited by UmX; 10-10-2018 at 12:26 PM.
#7
Safety Car
Thread Starter
Bc right now with the race can i have it set up as. the wild diagram.. So from air filter to driver valve cover, pass valve cover to can and out to intake which i guess is wrong with this can. Is there anyways to make this race can work to vent the crank case?
#8
Not if you have the race can.. you're missing two things: the ball valve on the breather and the check valve between the intake and can. It would be best for you to return the can and order the right one.
I 'ported' a $20 ebay can and made the breather valve from a 20mm medical mask valve, and used a 10mm check valve in between the intake and can.. works great. Sucks hard and vents under boost with no leaks.
I 'ported' a $20 ebay can and made the breather valve from a 20mm medical mask valve, and used a 10mm check valve in between the intake and can.. works great. Sucks hard and vents under boost with no leaks.
#9
Racer
Its funny the things that seem like they'd be the simplest turn out to be a pain. Ive been breaking my head over this for the last few weeks trying to figure out how to route my setup since im boosted. Seems like MM is the way to go with the check valve on the filter. Unfortunately I have a non-vented can and a breather for the valve covers, so I needed to figure out an alternative way to do this. 2 things I know for sure are 1. you need a check valve if youre boosted and 2. You need to vent the excess pressure at some point to not over-pressurize your crankcase. Seems like 'there is more than one way to skin the cat' on this, but some ways work better at evacuating boost from the case than others.
#11
Its funny the things that seem like they'd be the simplest turn out to be a pain. Ive been breaking my head over this for the last few weeks trying to figure out how to route my setup since im boosted. Seems like MM is the way to go with the check valve on the filter. Unfortunately I have a non-vented can and a breather for the valve covers, so I needed to figure out an alternative way to do this. 2 things I know for sure are 1. you need a check valve if youre boosted and 2. You need to vent the excess pressure at some point to not over-pressurize your crankcase. Seems like 'there is more than one way to skin the cat' on this, but some ways work better at evacuating boost from the case than others.
#12
Racer
There may be a best way but I see people run it a couple different ways with success. Not sure people are taking the time to measure crankcase pressure and do all the testing, though, so who knows how much more effective one way is over another. Ive seen people pull from the valley cover with success although MM says its not big enough of a pull. I suppose a lot of it will depend on how you use the car, too.
#13
Racer
#15
Burning Brakes
#16
Le Mans Master
Originally Posted by g23crawler
Is there a guide line on what is good and what isnt?
#17
Team Owner
Anything positive is bad. Crank case should not be seeing positive pressure.
#18
Le Mans Master
Originally Posted by Unreal
Anything positive is bad. Crank case should not be seeing positive pressure.