DIY: Oil Catch Can

flacopower · 10-09-2007, 11:28 AM

Took this from the cb7 forums. this post is from cokinut and i am not taking credit, simply reposting..

Quote:

Originally Posted by cokinut

I’m not responsible for any damages to you or your car.
Pictures are used for a guide only.

EDITED Extra notes: (09.17.04)

Use a 3/8" fuel / fuel injection hose from your local auto store. you will only need the 2 ft. one, but it will cost around $4 for 2ft. I changed hoses so many times because:

1. i've heard the vinyl braiding hose will warp due to the high engine temps.

2. the silicone, when it heats up, gets soft and collapses.

3. air hose i.d. 300 psi.

Disregard the pictures of the vinyl braiding tubing and silicone hose. imagine that it is fuel hose.

Purpose: (thanks to turbopanda from Honda tech)
In an engine, there are two areas of air pockets in which the air is not directly related to combustion. Within these two areas, oil and air are separated from the combustion chambers and coolant jackets for the purpose of lubrication of the engine. The upper air and oil pocket is constrained by the valve cover at the top, and the valve seals at the lower end. The bottom air and oil pocket is constrained by the piston rings at the top and the oil pan in the bottom.
In a perfect world, these two lubrication areas would not pressurize. However, in real life compression leaks by valve seals and piston rings in what is called blow-by. Blow by introduces pressure into the two pockets of air and oil (the head and the crankcase). In addition, heat caused as a byproduct of combustion causes air molecules to expand which also causes the pressure to increase in these lubrication areas. If no ventilation system was employed to release this pressure, it would find the point of least resistance to escape, which could be oil seals...or worse.
To relieve this pressure, a system called Positive Crankcase Ventilation (PCV for short) is used. It is a closed system that takes the pressurized air and oil vapor from these two lubrication areas and introduces it back into the combustion chamber, by way of vacuum caused by the intake charge.
http://img.photobucket.com/albums/v1...CH%20CAN/1.jpg

Parts / Price List:
You can get most, if not all, of these products are your local hardware store. If not, then good luck finding some
http://img.photobucket.com/albums/v1...CH%20CAN/2.jpg

- air / water separator tank for air compressors = $15
http://img.photobucket.com/albums/v1...CH%20CAN/4.jpg
- (2) ¼” male barbs - $1.50/each
http://img.photobucket.com/albums/v1...CH%20CAN/5.jpg
- (optional) (2) ¼” elbow fittings = $2.20/each
http://img.photobucket.com/albums/v1...CH%20CAN/3.jpg
- Teflon tape = $$0.75
- (4) 5/8”-1/4” clamps = $.79/each
http://img.photobucket.com/albums/v1...CH%20CAN/6.jpg
- 2 ft 3/8" fuel / fuel injection hose = $4.00 at an auto store
http://www.pelicanparts.com/catalog/...l_inj_hose.JPG
- steel wool = $1.50
http://img.photobucket.com/albums/v1...H%20CAN/20.jpg
- total cost of project: $33 or $28 minus the ¼” elbows

flacopower · 10-09-2007, 11:29 AM

[quote=cokinut]Instructions:
1. take out the filter from the air/water separator tank. You don’t need this since the steel wool will act as a baffle for the oil.

2. Stuff enough steel wool in the container to fill it up comfortably. What this does is keep the oil at the bottom of the tank and prevent the vacuum pressure from sucking up the oil from the bottom of the tank.

3. get the 2 (optional) ¼” elbow fittings and put teflon tape on the threads

This step is optional because depending on location, you may not need the elbows. They just provide a better fit for the hose in the engine bay.
4. Screw them onto either end of the air/water separator tank.

5. get your 2 ¼” male barbs and telfon tape the threads on those.
6. place the one male barb on each of the elbow fittings.

7. Make sure everything is tight.

8. Find a spot to mount your new oil catch can (air/water separator)
9. Notice on top of the air/water separator, there is an arrow indicating the air flow – remember that when attaching the hoses.
10. remove the old hose attaching the pcv valve to the intake manifold.
11. Get your 5/8” vinyl braided hose, cut one piece to go from your pcv valve to the inlet of the air/water separator.
12. remember to clamp down the ends.
13. cut another piece of hose to from the outlet of the air/water tank to the intake manifold nipple where the pcv hose thing used to attach to.

Danrsxtypes · 10-09-2007, 11:50 AM

i know this has been done before, but i give you credit for good DIY writeup

**infraredrsx** · 10-09-2007, 12:02 PM

You should use the filter/baffle assembly that came with the separator. It is designed to filter oil and water from the inlet air. The plastic parts that hold the filter in place act as a baffle to create a sump that causes the water/oil to drip to the bottom of the container. The steel wool is not actually acting as a baffle, it is just catching some of the oil as the inlet air comes in contact with it. The baffle/filter that comes with the separator actually forces the oil/water out of the inlet air.

**erik loza** · 10-09-2007, 12:20 PM

Good job and thanks for sharing. "Husky" catch-can FTW.

I mounted mine to the FSTB with aluminum brackets for the sport fishing industry.

*El Ocho Uno* · 10-09-2007, 12:25 PM

^^^ Always liked yours

RSX Factor · 10-09-2007, 12:25 PM

Holy shit, that mounting bracket is awesome. Wish I had that when I was trying to mount my GReddy catch can.

**infraredrsx** · 10-09-2007, 12:27 PM

Quote:

Originally Posted by *El Ocho Uno*

^^^ Always liked yours

I agree.

Those brackets are pretty.

*El Ocho Uno* · 10-09-2007, 12:28 PM

I actually need a bracket like that to better mount my oil pressure sender.

Where'd you get those, Erik ?

**erik loza** · 10-09-2007, 12:35 PM

Quote:

Originally Posted by *El Ocho Uno*

I actually need a bracket like that to better mount my oil pressure sender.

Where'd you get those, Erik ?

I don't think they sell over the net, but I bought them at my local Sportsman's Warehouse. They are a bracket for clamping fishing rod cups to the aluminum railing on boats. About $15 apiece, IIRC...

http://www.sportsmanswarehouse.com/fishing.cfm

El_PiBe · 10-09-2007, 01:47 PM

What are those catch cans for?

Nevermind...reading > me

SammySamSam · 10-09-2007, 02:04 PM

thank you very much for this post! I really appreciate it. Couple of questions tho. That seperator tank looks kinda small compared to the catch cans that are being sold. Will that seperator be big enough to hold all the blow by? also, can you show me any pics of where the hoses attach on the intake manifold?

flacopower · 10-09-2007, 02:21 PM

yeah.. just empty it out everytime you change your oil... if you have enough blow by to fill one of those big catch cans you got some problems

*El Ocho Uno* · 10-09-2007, 02:23 PM

Quote:

Originally Posted by erik loza

I don't think they sell over the net, but I bought them at my local Sportsman's Warehouse. They are a bracket for clamping fishing rod cups to the aluminum railing on boats. About $15 apiece, IIRC...

http://www.sportsmanswarehouse.com/fishing.cfm

Ahhh OK, I'll check out some of my local boating places see if I find something similar

I'll hit you with some +rep again as soon as I can

JayDM-'06 · 10-09-2007, 02:30 PM

Awesome put-together! Its gonna help me do it cuz ive been looking for a clear demonstration! +rep!

**erik loza** · 10-09-2007, 02:34 PM

Quote:

Originally Posted by SammySamSam

thank you very much for this post! I really appreciate it. Couple of questions tho. That seperator tank looks kinda small compared to the catch cans that are being sold. Will that seperator be big enough to hold all the blow by? also, can you show me any pics of where the hoses attach on the intake manifold?

I need to drain mine at least once per month and the effluent seems to mostly fuel, with some oil in it. It smells strongly of gasoline. The infeed line is from the PCV outlet and the return line goes back to your manifold.

*El Ocho Uno* · 10-09-2007, 02:41 PM

ever check to see how flamable that mixture actually is

**erik loza** · 10-09-2007, 02:49 PM

Quote:

Originally Posted by *El Ocho Uno*

ever check to see how flamable that mixture actually is

Hahahhaaa... I actually need to drain it this week and am out of lighter fluid for the grill. Solve two problems at once.

KazeSpec · 10-09-2007, 03:06 PM

NA motors wouldn't really need this would they? lol i'm looking for a cheap mod to do

SammySamSam · 10-09-2007, 03:19 PM

Quote:

Originally Posted by erik loza

I need to drain mine at least once per month and the effluent seems to mostly fuel, with some oil in it. It smells strongly of gasoline. The infeed line is from the PCV outlet and the return line goes back to your manifold.

i cant find my helms manual. any visuals?

**erik loza** · 10-09-2007, 03:32 PM

Quote:

Originally Posted by SammySamSam

i cant find my helms manual. any visuals?

PCV outlet is by the water pump, under the PS pump. Intake barb is right next to it on the manifold. It is clearly visible. You are simply splicing the catch can into the loop.

KazeSpec · 10-09-2007, 03:33 PM

damn i was too slow lol. you should see it. as said it is right under the PS pump, it has a tube that connects to the IM. so can i get confirmation on above question?

RSX Factor · 10-09-2007, 03:51 PM

Stole these pics from soccerman002's thread...

Basically pull this small hose out and replace with your hoses to the catch can.

SammySamSam · 10-09-2007, 04:13 PM

thanks for all the responses. A special thanks to rsx factor for the pics!

as for N/A cars doing this, a buddy of mine had it done to his N/A car and he would get some oil in the catch can.

Islanti · 10-09-2007, 04:14 PM

Good work. Here is another I would like to point out: DIY: Oil Catch Can For Under $20 (taken from k20a.org)

10-09-2007, 12:02 PM	#4
infraredrsx Zero Tolerance 4 Retards Join Date: May 2004 Location: Springfield, MO Posts: 780 iTrader: (0)	You should use the filter/baffle assembly that came with the separator. It is designed to filter oil and water from the inlet air. The plastic parts that hold the filter in place act as a baffle to create a sump that causes the water/oil to drip to the bottom of the container. The steel wool is not actually acting as a baffle, it is just catching some of the oil as the inlet air comes in contact with it. The baffle/filter that comes with the separator actually forces the oil/water out of the inlet air. __________________ There are 2 types of people behind the wheel, drivers and operators. Operators are interested in geting from point A to point B. Drivers are interested in what's between.

10-09-2007, 12:25 PM	#7
RSX Factor this is my inner child Join Date: Jul 2001 Posts: 3,943 iTrader: (2)	Holy shit, that mounting bracket is awesome. Wish I had that when I was trying to mount my GReddy catch can. __________________ CRSX Louisiana...blocking traffic and getting dirty looks since 12/19 /04

10-09-2007, 01:47 PM	#11
El_PiBe Projectors....Mmmmmm Join Date: Mar 2005 Location: I'm At GA....GA Posts: 2,270 iTrader: (22)	What are those catch cans for? Nevermind...reading > me __________________ 2005Infiniti G35 Coupe 6MT 2006 Projectors// 13% Tint// Pioneer AVIC D3//HKS Hi Power Exhaust //Nismo Shift Knob Last edited by El_PiBe; 10-09-2007 at 08:37 PM.

10-09-2007, 02:04 PM	#12
SammySamSam turbo=neverending debt Join Date: Feb 2006 Location: So Cal Posts: 792 iTrader: (6)	thank you very much for this post! I really appreciate it. Couple of questions tho. That seperator tank looks kinda small compared to the catch cans that are being sold. Will that seperator be big enough to hold all the blow by? also, can you show me any pics of where the hoses attach on the intake manifold? __________________ 03 NightHawk Black Pearl Type S,Greddy Turbo,FMIC,K-pro, unforgettable Test pipe, Natedog 3" DP,2.5" DC Dual Cannister Exhaust, Wings West Evo style CF hood, 18" buddy club sf new project:t3/to4e garrett/borg warner hybrid

10-09-2007, 03:06 PM	#19
KazeSpec KneeDragger in Training Join Date: Sep 2006 Location: Orange County Posts: 22,320 iTrader: (52)	NA motors wouldn't really need this would they? lol i'm looking for a cheap mod to do __________________ Special Projects Motorsports, Pro-Car Innovations, Innovative Mounts, Amsoil, Blueprint Racing, AIT Racing, BuddyClub, LF.com [SIGPIC][/SIGPIC] click: INfamoUS, All Motor Crew#14, Motorcycle Crew #37 need Spy sunglasses? PM me. Hardrace/PCI bushings PM me

10-09-2007, 11:50 AM	#3
Danrsxtypes novice Join Date: Apr 2005 Location: Garden State Posts: 2,962 iTrader: (33)	i know this has been done before, but i give you credit for good DIY writeup

10-09-2007, 12:20 PM	#5
erik loza On the long road... Join Date: May 2005 Location: Austin, TX Posts: 14,432 iTrader: (21)	Good job and thanks for sharing. "Husky" catch-can FTW. I mounted mine to the FSTB with aluminum brackets for the sport fishing industry.

10-09-2007, 02:21 PM	#13
flacopower I hate VVT4ME Join Date: Jan 2007 Posts: 551 iTrader: (2)	yeah.. just empty it out everytime you change your oil... if you have enough blow by to fill one of those big catch cans you got some problems

10-09-2007, 02:30 PM	#15
JayDM-'06 <3 Megan Fox Join Date: Sep 2005 Location: Florida Posts: 3,816 iTrader: (5)	Awesome put-together! Its gonna help me do it cuz ive been looking for a clear demonstration! +rep!

10-09-2007, 03:33 PM	#22
KazeSpec KneeDragger in Training Join Date: Sep 2006 Location: Orange County Posts: 22,320 iTrader: (52)	damn i was too slow lol. you should see it. as said it is right under the PS pump, it has a tube that connects to the IM. so can i get confirmation on above question? __________________ Special Projects Motorsports, Pro-Car Innovations, Innovative Mounts, Amsoil, Blueprint Racing, AIT Racing, BuddyClub, LF.com [SIGPIC][/SIGPIC] click: INfamoUS, All Motor Crew#14, Motorcycle Crew #37 need Spy sunglasses? PM me. Hardrace/PCI bushings PM me

10-09-2007, 03:51 PM	#23
RSX Factor this is my inner child Join Date: Jul 2001 Posts: 3,943 iTrader: (2)	Stole these pics from soccerman002's thread... Basically pull this small hose out and replace with your hoses to the catch can. __________________ CRSX Louisiana...blocking traffic and getting dirty looks since 12/19 /04

10-09-2007, 04:13 PM	#24
SammySamSam turbo=neverending debt Join Date: Feb 2006 Location: So Cal Posts: 792 iTrader: (6)	thanks for all the responses. A special thanks to rsx factor for the pics! as for N/A cars doing this, a buddy of mine had it done to his N/A car and he would get some oil in the catch can. __________________ 03 NightHawk Black Pearl Type S,Greddy Turbo,FMIC,K-pro, unforgettable Test pipe, Natedog 3" DP,2.5" DC Dual Cannister Exhaust, Wings West Evo style CF hood, 18" buddy club sf new project:t3/to4e garrett/borg warner hybrid

10-09-2007, 04:14 PM	#25
Islanti asdf Join Date: Apr 2005 Location: Chicago Posts: 2,372 iTrader: (27)	Good work. Here is another I would like to point out: DIY: Oil Catch Can For Under $20 (taken from k20a.org) __________________ Supercharged Crew Member #12 2002 Acura RSX Type-S 307 horsepower / 231 torque (DynoJet) @ 7psi