Oil Catch Can install locations
#2
Mr. Links
iTrader: (1)
Not a lot of people have them since they are mainly for road racing use. You can check Crispy's site as he has some pics:
http://reganrotaryracing.tripod.com/catch.htm
http://reganrotaryracing.tripod.com/catch.htm
The following users liked this post:
Ziggy (12-05-21)
#6
fart on a friends head!!!
Originally Posted by felix_is_alive
here ya go
Originally Posted by foursquarejibber
I don't know if this is true about rotaries, but isn't the correct way to install 2 catch cans?
Trending Topics
#8
AutoExe
Join Date: Dec 2006
Location: Diamond Bar, CA
Posts: 245
Likes: 0
Received 0 Likes
on
0 Posts
This is what I learned when I was in the Subaru world:
There are a variety of ways to install a catch can. There's one right way, two sort-of right ways, and some would argue that at least one common installation method which is wrong.
Sort of right ways:
1) Disconnect the hose which runs between the PCV valve and the turbo inlet pipe. Run a line from the PCV to the catch can, and another line from the catch can to the turbo inlet hose.
2) Disconnect the hose running between the crank case breather lines and the turbo inlet pipe. Run new hose between the breather line and the catch can and another hose between the can and the inlet pipe.
Right way:
Use two catch cans. Configure one as discussed in option one and the other as described in option 2. For optimal effectiveness, this is the way to go.
There are a variety of ways to install a catch can. There's one right way, two sort-of right ways, and some would argue that at least one common installation method which is wrong.
Sort of right ways:
1) Disconnect the hose which runs between the PCV valve and the turbo inlet pipe. Run a line from the PCV to the catch can, and another line from the catch can to the turbo inlet hose.
2) Disconnect the hose running between the crank case breather lines and the turbo inlet pipe. Run new hose between the breather line and the catch can and another hose between the can and the inlet pipe.
Right way:
Use two catch cans. Configure one as discussed in option one and the other as described in option 2. For optimal effectiveness, this is the way to go.
#9
Rotary Enthusiast
rotorbrain...the greddy can ,can be configured to work both standing up or laying down , its mostly so you can use the sightglass (not pretty clear in these pictures) ,pretty neat unit
Maybe 2 catch cans for subarus ,because their boxer engine has two banks ???...I HAVE NO IDEA IF THIS IS TRUE, i am just thinking why you would need 2 catch cans, so please no flames
Maybe 2 catch cans for subarus ,because their boxer engine has two banks ???...I HAVE NO IDEA IF THIS IS TRUE, i am just thinking why you would need 2 catch cans, so please no flames
The following users liked this post:
b3delta (05-10-20)
#14
Can somebody give me a clear definition of why a catch can is necessary? I know you're gonna say blowby but what is blowby? How does it occur and how does an extra port on the UIM catch excess oil? It doesn't make sense to me, please help me understand.
Thanks again,
Jeremy
Thanks again,
Jeremy
#15
thats not paint....
Pics are looking good guys, keep them comming. I need to find a place to put a catch can.
That looks sweet, hidden & clean. That is one of the greddy style ones layed down correct?
How much of a pain is that to empty?
Originally Posted by dubulup
looks towards the intake...
How much of a pain is that to empty?
#16
development
Originally Posted by 7-sins
That looks sweet, hidden & clean. That is one of the greddy style ones layed down correct?
How much of a pain is that to empty?
How much of a pain is that to empty?
Originally Posted by 3rd Gen Jeremy
Can somebody give me a clear definition of why a catch can is necessary? I know you're gonna say blowby but what is blowby? How does it occur and how does an extra port on the UIM catch excess oil? It doesn't make sense to me, please help me understand.
Thanks again,
Jeremy
Thanks again,
Jeremy
#17
So the stock PCV allows the oil vapor to go into the UIM? What's wrong with the oil vapors being in the oil reservoir? What do that do that is so detrimental?
I've blocked off my PCV hose from the filler neck to the UIM because I broke the valve. If I were to run 14 - 15 psi, would I need a catch can?
Jeremy
I've blocked off my PCV hose from the filler neck to the UIM because I broke the valve. If I were to run 14 - 15 psi, would I need a catch can?
Jeremy
#18
Mr. Links
iTrader: (1)
Originally Posted by 3rd Gen Jeremy
So the stock PCV allows the oil vapor to go into the UIM? What's wrong with the oil vapors being in the oil reservoir? What do that do that is so detrimental?
Originally Posted by 3rd Gen Jeremy
I've blocked off my PCV hose from the filler neck to the UIM because I broke the valve. If I were to run 14 - 15 psi, would I need a catch can?
All you need to do is just vent one of those lines back to your intake or some other vacuum source. If you aren't running the car hard on a road course, an oil catch can is not going to do much for you except add to your 'mod list'.
#19
So if I've eliminated the top hose going to the UIM, I should put one between the lower hose and the primary intake? I have noticed oil in there recently.
By the way, everything I do in that car is sideways. I'm a lateral G junkie and I do plan on tracking the car once I get it sorted out the way I want it.
Thanks for you help.
Jeremy
By the way, everything I do in that car is sideways. I'm a lateral G junkie and I do plan on tracking the car once I get it sorted out the way I want it.
Thanks for you help.
Jeremy
#20
Mr. Links
iTrader: (1)
Originally Posted by 3rd Gen Jeremy
So if I've eliminated the top hose going to the UIM, I should put one between the lower hose and the primary intake? I have noticed oil in there recently.
#22
development
Originally Posted by Mahjik
An oil catch can has nothing to do with oil vapors.
my engine build wasn't the tightest...so it could be oil/gas vapors. My oil would smell like fuel and get dirty dirty after 1500mi or so. So, I changed my oil quite often.
#23
Mr. Links
iTrader: (1)
Originally Posted by dubulup
I don't know...I get some frothy **** in my can, and I understood that to be from hot vapors.
my engine build wasn't the tightest...so it could be oil/gas vapors. My oil would smell like fuel and get dirty dirty after 1500mi or so. So, I changed my oil quite often.
my engine build wasn't the tightest...so it could be oil/gas vapors. My oil would smell like fuel and get dirty dirty after 1500mi or so. So, I changed my oil quite often.
#25
development
Originally Posted by Mahjik
Right, but the vapors would be vented regardless of the catch can since the oil neck is plumbed to a constant vacuum source. The idea is to just catch anything that's not vapor before it goes back to the intake.