Oil Catch Can? - Page 2 - LotusTalk

Kevin M · 09-24-2007, 02:33 PM

Thank you both for the concise explanations. Much appreciated.
Kev

Phill B · 09-30-2007, 03:44 AM

Oil catch cans that are plumbed back into the engine are also known as oil-air separators. A good one will have a tube extending from the inlet fixture almost to the bottom of the can. It should also be half filled with loose (stainless) steel wool - the sort you buy from a supermarket is good as long as it doesn't contain detergent and you loosen it up a bit.

When the hot air/oil mix hits the inside and contents of the can the oil should condense ut and settle in the can.

Apart from the gunking up the blow by oil can also cause engine knock aka pinging, especially on cars with forced induction. You definitely don't want that.

300hpMR2 · 09-30-2007, 11:51 PM

Cool! I have the same Greddy catch can as Kaz on my mr2 turbo. I will keep it in case I get an Exige S.

necro · 10-01-2007, 12:37 AM

Was there not a thread with good instructions?

smashfactory · 10-01-2007, 12:42 AM

http://www.moroso.com/catalog/catego...?catcode=13400

To go with your oil pan.

smashfactory · 10-01-2007, 12:47 AM

or here.

http://www.jegs.com/webapp/wcs/store...60679_-1_10475

smashfactory · 10-01-2007, 12:50 AM

Shouldnt this be under the "Powertrain" section?

MaineLotus · 10-01-2007, 05:31 AM

Quote:

Originally Posted by 25psi_Elise_Killer

You got PM

I'd like to know where you got it also, can you post a link or send a PM?

Buz · 10-01-2007, 07:23 AM

The proper catch can routing is still not clear to me. Is there a need for a can on both breather lines? Which breather line carries the most oil/vapor? Is there an advantage to having the breather hoses continue to the intake after the can or can they be capped off and use a filter on the top of the catch can? Does the pcv valve need to be before or after the catch can? I assume both lines need a pcv valve to keep the intake air from blowing the oil back into the valve cover.

25psi_Elise_Killer · 10-01-2007, 09:44 AM

Quote:

Originally Posted by MaineLotus

I'd like to know where you got it also, can you post a link or send a PM?

You can find it at the bottom of this page:
http://www.roadraceengineering.com/evomisc.htm

Phill B · 10-01-2007, 06:22 PM

Quote:

Originally Posted by Buz

Is there an advantage to having the breather hoses continue to the intake after the can or can they be capped off and use a filter on the top of the catch can?

If your can vents to the air via a filter rather than back into the intake you are very probably breaking local vehicle emission laws.

jkolb · 10-01-2007, 07:01 PM

Most of the air/oil separators have an oil return line to the crankcase. Has anyone figured out where to run this line?

Jerry

carl · 10-08-2007, 08:11 PM

i noticed blow by on my old elise and the S good idea. carl

09-24-2007, 02:33 PM	#21 (permalink)
Kevin M Kevin Menshik Join Date: Feb 2007 Location: Edmonton, Alberta, Canada Posts: 157	Thank you both for the concise explanations. Much appreciated. Kev __________________ Kevin Menshik 07 Storm Titanium Exige S. Larini de-cat and SE exhaust. Braille B2015 Battery. Green filter, CF splitter, CF side scoops, CF shifter console, CF Access panels. Black wheel and horn badges.

10-01-2007, 12:37 AM	#24 (permalink)
necro <....> Join Date: Jul 2007 Location: City of Los Angeles, CA Posts: 518 Images: 1	Was there not a thread with good instructions? __________________ 07 SY ExigeS

10-01-2007, 12:42 AM	#25 (permalink)
smashfactory Registered User Join Date: Apr 2006 Posts: 827	http://www.moroso.com/catalog/catego...?catcode=13400 To go with your oil pan. Last edited by smashfactory : 10-01-2007 at 12:45 AM. Reason: ...

10-01-2007, 07:01 PM	#32 (permalink)
jkolb Registered User Join Date: Aug 2006 Location: Bend, OR/Austin, TX Posts: 374	Most of the air/oil separators have an oil return line to the crankcase. Has anyone figured out where to run this line? Jerry __________________ 2007 Laser Blue Exige S 1965 Elan (26r clone) vintage race car 2005 Audi S4

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09-30-2007, 03:44 AM	#22 (permalink)
Phill B Registered User Join Date: Dec 2005 Location: Sydney, Australia Posts: 280	Oil catch cans that are plumbed back into the engine are also known as oil-air separators. A good one will have a tube extending from the inlet fixture almost to the bottom of the can. It should also be half filled with loose (stainless) steel wool - the sort you buy from a supermarket is good as long as it doesn't contain detergent and you loosen it up a bit. When the hot air/oil mix hits the inside and contents of the can the oil should condense ut and settle in the can. Apart from the gunking up the blow by oil can also cause engine knock aka pinging, especially on cars with forced induction. You definitely don't want that.

09-30-2007, 11:51 PM	#23 (permalink)
300hpMR2 Not a poseur anymore! Join Date: Jul 2007 Location: Orange County, CA Posts: 578	Cool! I have the same Greddy catch can as Kaz on my mr2 turbo. I will keep it in case I get an Exige S.

10-01-2007, 12:47 AM	#26 (permalink)
smashfactory Registered User Join Date: Apr 2006 Posts: 827	or here. http://www.jegs.com/webapp/wcs/store...60679_-1_10475

10-01-2007, 12:50 AM	#27 (permalink)
smashfactory Registered User Join Date: Apr 2006 Posts: 827	Shouldnt this be under the "Powertrain" section?

10-01-2007, 07:23 AM	#29 (permalink)
Buz Registered User Join Date: Nov 2005 Posts: 1,920	The proper catch can routing is still not clear to me. Is there a need for a can on both breather lines? Which breather line carries the most oil/vapor? Is there an advantage to having the breather hoses continue to the intake after the can or can they be capped off and use a filter on the top of the catch can? Does the pcv valve need to be before or after the catch can? I assume both lines need a pcv valve to keep the intake air from blowing the oil back into the valve cover.

10-08-2007, 08:11 PM	#33 (permalink)
carl Registered User Join Date: Oct 2005 Posts: 1,050	i noticed blow by on my old elise and the S good idea. carl

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