Oil Catch Can...why?
Joined: Oct 2009
Posts: 5,163
Likes: 113
From: St. Louis, MO
Oil Catch Can...why?
Ok, somewhat of a noob question, but what are the benefits of an oil catch can? Merely asthetics or primarily for FI engines? 
Personally, I was thinking of adding one for engine bay dress up.
Personally, I was thinking of adding one for engine bay dress up.
Joined: Oct 2009
Posts: 5,163
Likes: 113
From: St. Louis, MO
wow, amazing that is it so compact! 
Now for a real answer.....anyone?
Now for a real answer.....anyone?
Snip from nissanforums ( searched it up since I was curious, too):
"Catch cans fit between a port in an engine's valve cover and its intake and use the vacuum from an engine's intake to draw blow-by contaminants (oil, fuel, and exhaust gas that seep past the valve seals during combustion) out of the cylinder head and into a reservoir where they can be manually disposed of. In doing so, they also create low pressure within the head, allowing components to move more freely, decreasing parasitic loss. In many OEM applications, a simple vacuum hose is placed between the valve cover and the intake, which alleviates excess cylinder-head pressure and draws contaminates out of the cylinder head, but at the cost of re-circulating them throughout the intake tract; soiling intake manifolds, fuel injectors, valves, and decreasing intercooling performance of force-induced cars. Even more detrimental is when those cute little breather filters are used instead, that neither vent excess blow-by pressure as much as a vacuum-driven alternative, nor stint the build-up of contaminants in the cylinder head-doubly robbing power.
import tuner did this article and showed a dyno with a 3hp gain."
Hey, waitaminit, I think *I* might have one of those.
"Catch cans fit between a port in an engine's valve cover and its intake and use the vacuum from an engine's intake to draw blow-by contaminants (oil, fuel, and exhaust gas that seep past the valve seals during combustion) out of the cylinder head and into a reservoir where they can be manually disposed of. In doing so, they also create low pressure within the head, allowing components to move more freely, decreasing parasitic loss. In many OEM applications, a simple vacuum hose is placed between the valve cover and the intake, which alleviates excess cylinder-head pressure and draws contaminates out of the cylinder head, but at the cost of re-circulating them throughout the intake tract; soiling intake manifolds, fuel injectors, valves, and decreasing intercooling performance of force-induced cars. Even more detrimental is when those cute little breather filters are used instead, that neither vent excess blow-by pressure as much as a vacuum-driven alternative, nor stint the build-up of contaminants in the cylinder head-doubly robbing power.
import tuner did this article and showed a dyno with a 3hp gain."
Hey, waitaminit, I think *I* might have one of those.
Last edited by Swivel; Jun 8, 2010 at 03:55 PM.
^^Catch cans are not for aesthetics. They are functional. That's why you see lots of diy catch can setups.
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Joined: Mar 2009
Posts: 18,299
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From: By the sea, Tx
G35 sedan w/ too much money in mods
+1 on functional. You want to keep your engine as clean as possible and this will keep oil out of your plenums. I drain mine once a month and usually get 1-2 tablespoons of oil out of the can. Plus it looks pretty good in my bay!!
Joined: Oct 2009
Posts: 5,163
Likes: 113
From: St. Louis, MO
based on its current location, I would not be able to do that install since I run a Ztube/RevUp airbox. Front induction tube would be in the way. Where else can you locate it???
Joined: Mar 2009
Posts: 18,299
Likes: 1,488
From: By the sea, Tx
G35 sedan w/ too much money in mods
Thanks Frankie!
Yeah I need to quit being such a ho but wanted to use the pic to illustrate my point.
Here is a perfect solution. Takes a little more work than my way but a lot of members have installed the can this way.
Yeah I need to quit being such a ho but wanted to use the pic to illustrate my point.
there's room... take out headlight, there is an existing hole that can be used - or drill new depending on where you want it positioned... you can use one bolt direct to can (even without bracket).
This can be done even when using OEM washer fluid filler neck and rad overflow tank
This can be done even when using OEM washer fluid filler neck and rad overflow tank
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