Cheap homemade Oil Catch Can
#12
Re: Cheap homemade Oil Catch Can
Originally Posted by reactone
Using the pre-turbo pipe as a vac. source can be bad because the oil vapors lower the octane rating of your fuel, resulting in detonation.
#13
Re: Cheap homemade Oil Catch Can
Thats why you use a catchcan. I dont understand why you would want a vented catchcan anyway? you're vaccum source would just suck through the vent in the catchcan and lower the vaccum on the crankcase.
#14
Re: Cheap homemade Oil Catch Can
On my last diagram vac are taken from intake mani before boost, and from pre-turbo intake at boost, then, i was thinking this setup work better for vacuum under boost from pre-turbo intake if i use a non-vented setup, because from pre-turbo it suck air from the catch can (at boost suck air from crank case and intake mani) and if i use a vented setup also is going to suck air from the air filter reducing the vac pressure from pre-turbo.
#15
Re: Cheap homemade Oil Catch Can
Originally Posted by ifly87
Thats why you use a catchcan. I dont understand why you would want a vented catchcan anyway? you're vaccum source would just suck through the vent in the catchcan and lower the vaccum on the crankcase.
#16
Re: Cheap homemade Oil Catch Can
Here i attach an image showing what im talking about.
People says crank case must be in vac all the time
On number 1: intake mani suck air from crank case as stock before boost
On number 2: in boost the intake mani becomes presurized, so now we need another vac source, thats the reason we use pre-turbo intake as vacuum
People says crank case must be in vac all the time
On number 1: intake mani suck air from crank case as stock before boost
On number 2: in boost the intake mani becomes presurized, so now we need another vac source, thats the reason we use pre-turbo intake as vacuum
#20
Re: Cheap homemade Oil Catch Can
I ran my BOV line to the old PCV manifold fitting. Then I ran the PCV and valve cover to the catch can which is sealed, and ran a vacuum line from the catch can to the turbo intake. I'll get some pics.