HOW-TO: Another Catch Can Install

[westrock]

***** Redone as of 01/08/2007 (contains original pictures as well as updated ones *****

*** I Know alot of poeple read this how-to, if you have any questions or confused about anything don't hesitate to shoot me a PM ***

I did the $20 catch can, only it cost about $50 after all was said and done.

This is on a 2005. I have only 500 miles on my car and there was some oil around the nipples already.

I went to Home Depot, so my parts are little different than the Dodge-srt4.com install.
Also looking at that install I don't understand exactly where they are going after the filter. They seem to go down to the side of the engine "to the intake manifold", but the manifold is much farther up than that. The PCV on mine is connected directly to the throttle body (much like theirs looks to be) so thats the path I chose. If anyone can offer a better explanation I'm open.

1 Amflo Filter (Air Compressor section).....$27
4 3/8"-5/8" adjustable Hose clamps (plumbing section).....$0.86 each
1 Tube of Liquid Teflon Sealant (plumbing section)....~$2 I think
2 3/8" to 3/8" brass fittings (plumbing section)....~1.50 each
4 feet of 3/8" rubber fuel line (autozone)....~$4 total
Bag of Vacuum T's (Autozone)....~$2
zipties

The parts

A better picture of the filter...its heavy and big

Here it is 1.5 years later. Still holding up, though the plastic bottle has yellowed

Removing The Original Setup

Take off your SRT-4 cover...it just pops off

Heres the line I removed. It connects the Throttle Body to the PCV.

Heres the line after being pulled out. Its a pain to get out. I pulled the thottle body end out up through the intake manifold runners...then slid out the PCV side. Its kinda rigid, so you gotta massage it out of there.

Mounting The Can

Mounting this thing is a bit of trouble, because it doesn't really have any tabs or screw threading of any kind. So really the best best is to just zip-tie it to something. I used

Heres where I originally mounted it

Later on I removed the battery, heres is the new place for it

Running The New Lines

The setup that I have decided on is to T both the PCV and the valvecover vent together and feed them both into the catch can. You can ask 10 different poeple how to set this thing up and you'll probably get 8 different answers.

My reasoning is that the intake will pull as much vacuum as the valvecover will give it, and then it can pull the rest of the vacuum from the intake filter. I did try the mini filter on the drivers side for a while and I must warn you that oil will leak out of thing (especially if you dangle it)

My catch can then goes to the intake piping, not the throttle body like orginally. This is because the intake piping will always have a vacuum pulled on it. The more the turbo sucks in air the harder the vacuum on the intake. So for that reason I do not have a checkvalve (other then the PCV).

Heres the vacuum hoses layed out for the T. I used Expandable Sleeving and heat shrink to continue the theme from the factory (and it looks better)

I attached the PCV hose and ran it under the intake manifold over to where the valvecover vent is.

Heres the two lines coming together right under the camshaft position sensor on the intake side

Combined single line going into the Catch Can. Note the arrow on the Catch Can. The arrow needs to point in the direction of airflow. Thus the vacuum pulls the air from the engine and into the intake piping.

Line coming from Catch Can to intake pipeing

Heres a general sketch of the hose configuration

Observations

Now that I have had this for a while I will throw up my observations.

1: If you have the money get a real catch can if for nothing more the mounting capabilities.
......Greddy @ Modern Performance
......Boomba Catch Cans
......BWoody Catch Can

2. Leave some slack in the hoses for when the engine moves around during normal driving.

3. Another reason to leave slack, catch cans are illegal in most states. Leaving some extra room on the hoses lets you "bridge" the IN & OUT of the catch can so you can take it out when you go to do inspection.

4. This $20 catch can is not very big. Not only will it get oil in it, when its cold it will get water built up inside as well (moisture in the air). And that mixture gets nasty. The smell permiates everything.


Other Threads About Catch Cans (for alternative ideas, thoughts, and pictures)

Greddy Install
Greddy Install
Boomba Install


catch can install $20 catch can how to catch can mod cheap catch can install catch can

[bigmosrt]

nicely done

[deejay]

kewl.. nice instructions and pics.. i'ma do this install this weekend.. thanks

[IBLIS]

looks good man

[jmihalchik]

i have the larger compressor filter with a turn valve on the bottom ran to a hose for easy under the car draining.

[ryedizzel]

great "HOW TO", thanks for posting it. i think i will finally Home Depot and do mine. my only concern now is that my car is up to 15,000 miles. so will this remove all of the oil which has already built-up? or will i need to take off some hoses and clean out certain parts first?

[srtboosthead]

you'll probably have to take out the cold side hose and maybe even the intercooler, and give them a wash out to get rid of the oily residue.

[westrock]

Just to let you know how the filter performs....heres a follow up thread....pretty substantal.

[westrock]

I have since modified my setup. I now route both the PCV and Crankcase though the intake pipe.

This allows both ports to be filtered, plus allows a vacuum to be pulled at all times. Using the stock in port (throttle body) will not work, because when you boost that port will become positevly pressurized. Be sure to put a nipple over the port and use a good clamp to hold the nipple on. I didn't thin about and mine blew off on a good 2nd gear pull and made my car idle terribly.

The red is T-valve to combine the two lines.

[johnnyfive]

hmmm... my air filter only cost like 15. though mine is slightly different.

[drews77]

Does that "new" setup (the one with the tee) still allow the PCV to function correctly? Only ask because I'm not familiar with how they function.

[Yrubme]

Quote: Originally Posted by westrock

I have since modified my setup. I now route both the PCV and Crankcase though the intake pipe.

This allows both ports to be filtered, plus allows a vacuum to be pulled at all times. Using the stock in port (throttle body) will not work, because when you boost that port will become positevly pressurized. Be sure to put a nipple over the port and use a good clamp to hold the nipple on. I didn't thin about and mine blew off on a good 2nd gear pull and made my car idle terribly.

The red is T-valve to combine the two lines.

Ok now I know that putting the crankcase breather to port vac. is not a good idea. For one there is no valve there to regulate the flow(as in controling the vac and boost from and to the crankcase) and second it may create more vaccum in the crankcase that may upset the sealing of your piston rings and also your oil seals. Oh and it just messes up the whole emmision design of the PCV. Although when under Vaccum U will sure have Positive Crankcase Ventilation but under boost u will have Positive Crankcase Presurization which may blow a seal or two or if your luck just shoot the dip stick out and spill oil all over your engine bay. Hum just my 2cents

[SilverSerfer]

what about the check valve and the TB where does the TB go to now?

[Srt4FryRice]

about how long is it till you start seeing oil collect in the can? I just did the "mod" today.

[Imboosted]

what do i tell the guy at the counter when i ask for the filter. i went to napa, carquest, and ace and i all asked them if they have the amflo air filter and they said no. my friends told me that they should have them. is there a certain name for it.