HOW TO: DIY catch can

[89T]

*****If you are going to add a second fitting to the valve cover, page 1 is a must read.
https://www.3geez.com/forum/showthread.php?t=69021 *****
these are the tools you will need to build your own catch can.
there is one tool that i used that is not easily available.
the tool to the far right is called a 1" copper flare tool.I went to home depot to price one and it seems they do not carry it. So you will have to use a hole saw or a step bit and debur the hole with a file... not a big deal. It will change some steps in the making of the can .

First of all please use a empty can. double check that it is empty. If it is not empty burn off all the fuel with a camping oven or torch.
build the catch can at you're own risk. By attempting to build this catch can you are agreeing to take full responsibility if harm comes to you ,your home or any by standers. This is only meant to be a guide.


after and only after you fully empty the can get a small pair of needle nose pliers and slowly remove the valve stem needle. If you start to hear a hissing sound tighten the needle back up put the tank back on the torch or oven and burn the fuel off.

this is what the needle looks like when removed.


remove the fill needle in the same manner as the first.


needle removed.

IMPORTANT:now fill the tank with water. this will expel any lingering fumes inside the bottle.



leave the needles out of the bottle and use a hacksaw or saws-all to remove the center threaded section.

[89T]

This is the back side of the threaded section.


I trimmed the rubber section of the filter with a razor knife.I did this so i could easily slide the filter on and off to drain the tank.

if you do not have a 1" copper flaring tool.
you will need to purchase a filter and measure the opening in the groove.

after filter is measured take a step bit or hole saw and drill through the center hole of the can. Debur the opening with a file.
the filter section is done.
Using the flaring tool:
now tap the flaring tool until its fully seated.








as you can see the flaring tool leaves a nice smooth rounded opening.

[89T]

filter test fitted.

catch can sitting to a brother can with a torch attached.

Clamp the catch can in a vise and measure 2" from the vice jaw and make a couple of marks then using a straight edge connect the marks with a line. this will be the center line for the fittings.

mark the fittings center 1" apart. when the fittings are installed they will be 1/2" apart from each other.
take a center punch and dimple the marks to keep the drill bit from wandering.

Your going to use 1/2" coolant fittings. Drill a 1/2" hole in each of the dimples.

debur the openings lightly. you want the holes to fit tight to the fittings.
use a pair of larger needle nose to slightly bend one spot of the opening.
The arrow shows a slight bend on the edge of the hole.
The reason you do this is to give the fitting somewhere to bite in and Begin to thread.

[89T]

Get the fitting to start by hand until it wont move.
The fittings i used do not have provisions for a wrench or socket.They have slits on the end of the fitting. i used a chisel. While pushing down as you turn the fitting it will Begin to thread it's self on.






the proper way to use thread tape. Its in the vise so i could snap a pic.
hold the fitting in your left hand and roll the tape away from you 5 to 7 wraps.

I included this pic to show you what you would do for a drain back system.
Drain back systems can/will contaminate you're oil.


finished .

[Civic Accord Honda]

sweet!, how much total did it cost to make? i gotta install one on my civic

[89T]

prices and parts list. tomorrow. it's getting late and i am tired.
I need to proof read it one more time with rested eyes.

[Rendon LX-i]

bump

[89T]

bump

i see you'r bump and raise you a bump. lol

[Pico]

i see you'r bump and raise you a bump. lol

off topic:
when did you shorten your name to 89t

[Rendon LX-i]

lol...awesome...i just got done cutting the top...whats up with the list you where going to put down...of where you got the fittings and breaher/filter. ill prolly just use brass fitting if the fittings you got are hard to come by

[89T]

off topic:
when did you shorten your name to 89t

I asked for it to be changed last Sunday when i started my new build thread. I believe it was officially changed on Monday.
https://www.3geez.com/forum/showthread.php?t=69021

lol...awesome...i just got done cutting the top...whats up with the list you where going to put down...of where you got the fittings and breather/filter. ill prolly just use brass fitting if the fittings you got are hard to come by

advanced auto parts. like $13 for the breather filter and $4.09 each for the fittings.
$.91 per foot for the hose at Lowe's. i used 6 or 7 ft.
i need to measure

[Rendon LX-i]

good to know ill write this shit down and get it tommorow...your the man bro...it should be done by tommorow

[BITESIZE]

what is a catch can used for?

[Rendon LX-i]

its elimanates the pcv system...run two tubes from your valve cover to the catch can and your set

[import racer]

What about the part on the back that's on the oil pan,does that stay the way it is.I thught one of the hoses went to there.

[Tdurr]

What about the part on the back that's on the oil pan,does that stay the way it is.I thught one of the hoses went to there.

x2.

[89T]

what is a catch can used for?

read this post then go to the link.
https://www.3geez.com/forum/showpost....10&postcount=4

What about the part on the back that's on the oil pan,does that stay the way it is.I thought one of the hoses went to there.

x2.

the way i have it now you could use the stock valve cover vent to one of the fittings on the catch can and the other to the oil separator on the back of the engine.
You could add another 1 or 2 fittings and run 1-2 vents from the valve cover and 1-2 vents on the oil separator.

I am going to make another sealed can with 1 line in and 1 line out using cold air tube pre-turbo for vacuum.
this can will evacuate the crank case pressure and take the place of the oil separator.

[Rendon LX-i]

yeah im going to keep my pcv catch can in still...which in is inline

[Tdurr]

read this post then go to the link.
https://www.3geez.com/forum/showpost....10&postcount=4





the way i have it now you could use the stock valve cover vent to one of the fittings on the catch can and the other to the oil separator on the back of the engine.
You could add another 1 or 2 fittings and run 1-2 vents from the valve cover and 1-2 vents on the oil separator.

I am going to make another sealed can with 1 line in and 1 line out using cold air tube pre-turbo for vacuum.
this can will evacuate the crank case pressure and take the place of the oil separator.

where is the oil separator located?

[89T]

where is the oil separator located?

black box on the back of the block.

hold on!
mmmmmhammm.
there you go! lol!

[Rendon LX-i]

Little tip for you tdurr...REDO YOUR PCV before you boost LOL...take that bastard out and gut the valve..and run a tube from the PCV to the catch can then from catch can to turbo intake like 3 inches from the compresser...just drill a hole big enough to screw a 3/8 brass/flared fitting. and thats it...well youll have fun installing the kit...its a bolt on but you have to make your own charge pipes which is not shit.

[Tdurr]

black box on the back of the block.

hold on!
mmmmmhammm.
there you go! lol!

lol thanks.

Little tip for you tdurr...REDO YOUR PCV before you boost LOL...take that *** out and gut the valve..and run a tube from the PCV to the catch can then from catch can to turbo intake like 3 inches from the compresser...just drill a hole big enough to screw a 3/8 brass/flared fitting. and thats it...well youll have fun installing the kit...its a bolt on but you have to make your own charge pipes which is not ***.

planned on redoing the whole thing. I think its messed up atm anyways. thanks for telling me wut to do tho lol.

edit: could i just run that hose from the oil pan to the catch can and get rid of the box all together?

[Rendon LX-i]

I wouldnt...The black box Separates the the oil and water = Condisation or w/e..sorry my spelling HELLA BAD LOL. but if you just ran a hose from the pan you prolly lose oil bro.

[Tdurr]

I wouldnt...The black box Separates the the oil and water = Condisation or w/e..sorry my spelling HELLA BAD LOL. but if you just ran a hose from the pan you prolly lose oil bro.

lol okay didnt know that. will just do what you said then.

[Rendon LX-i]

WOOT...can is almost done...just need to drill a hole on top and the v/c and done. I used H/D shit...you get shit load of hose for 12bucks...fittings are 3.50 and the drain fitting was 2.50 so rather cheap. the filter was nice at auto zone. was 14. had a Rubber groment so ill drill a hole bit enought to put that in and i can just pop in and out the filter SWEET.