any of you has greddy oil catch tank??

2116 Views 70 Replies 21 Participants Last post by Quick Vr4, Apr 14, 2003

shaw

Discussion Starter · Oct 25, 2001

hi guys,

do you know if the greddy oil catch tank can be installed for n/a cars???? and where would you mount this tank?? do I need special brackets?? thanks.

jack.

1 - 20 of 71 Posts

chansigril

· #2 · Oct 25, 2001

yes, it is available for na cars (i think it's actually designed for us)... if memory serves, it mounts off one of the plenum bolts (passenger side of course) and you do need a bracket but you should order it with the can, i think it's about $5; i don't have it installed... yet...

- mike

AmkreadGTO

· #3 · Oct 25, 2001

2

Did someone said Greddy catch can??

I think it's design for ANY car... NA, TT, etc... u can buy their universal mounting bracket or make ur own...

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MattRed3000GT

· #4 · Oct 25, 2001

OK, I might be dumb but what is the catch tank for? Is it to make the oil running through the engine cooler???

chansigril

· #5 · Oct 25, 2001

normally the line that runs from your engine to your intake blows oil in there, i believe it is part of the pcv (positive crankcase ventilation) system but i may be mistaken. at any rate i do know for certain that it blows oil into your intake hose, which then goes into your throttle body (gunking it up) and then into your plenum (gunking it up) and then through your intake valves... i think you get the idea

anyway, the catch can catches the oil that is blowing out of the engine and contains it instead of simply feeding it back into your engine through the air intake.

- mike

MattRed3000GT

· #6 · Oct 25, 2001

Ok. i get it.. so the catch tank has filter in it? so it will filter out the oil that go into the intake or TB? so you hook the catch tank to the line which blowing air? I thought oil catch tank was for hooking up to motor oil line that go into the engine... see I am dumb

chansigril

· #7 · Oct 25, 2001

a line comes out of the motor and it has both air and oil in it. it runs to the air intake hosing, basically recirculating it back into the engine. the catch can goes on that hose, stopping oil but allowing air to get into the air intake line. i think ya got it

good luck, i think it's worthwhile, safe travels.

- mike

Paul

· #8 · Oct 25, 2001

How much is it? Did someone say $5?

shaw

Discussion Starter · #9 · Oct 26, 2001

wow, so many replies. thanks guys.

one more question, chansi or george.....

why can we just hook the catch can to the engine pcv,
and plug the hole on the intake tube? that way undesired
exhaust will not recirculate back into the intake.

I would just put a breath filter on the "line out" for the catch can.

thanks.

Roger G.

· #10 · Oct 26, 2001

The oil catch can is needed for high boost applications as the crankcase pressure often also increases and this way the oil will not find their way into the turbos and intercoolers. Is the NA that thing should be installed turbo- or compressor-charged ?

chansigril

· #11 · Oct 26, 2001

roger,

this na is not a turbo/super-charged car; my car has no boost and definitely has oil feeding back into the intake from what i BELIEVE but am not certain is a pcv line. i do know for certain the the line feeds oil into my intake and it did it when i was bone stock as well.

shaw,

i BELIEVE you do want the air to be able to vent back into your intake, i have heard something about negative pressure as well but that person may have been talking out of their butt. i'm going to crack my manual open tonight and get to the bottom of this one

i'll keep y'all posted but i would run the line from your engine into the breather and can and then run another line from the breather and can into your intake hosing; the air can flow freely back and forth (if possible) as needed while the oil is contained in the catch can.

ya know, after a few moments of thought i'm 97% sure that "negative pressure" is bs but i'm going to verify that tonight and get as much info as i can. will post up again monday.

- mike

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Joe G.

· #12 · Oct 26, 2001

AmkreadGTO - I'd like to understand how you plumbed the catch can into your system. I'm pretty sure it is hooked up incorrectly, but I won't say so until you explain where each hose is connected. I see the hose off the PCV Ts into the catch can but where does the other hose from the T go? Does it pull manifold vacuum on the PCV? or does it lead to the rear bank cam cover? And how about the other line off the catch can, is that your clean air source perhaps from the rear bank turbo hose?

Regards.

AmkreadGTO

· #13 · Nov 6, 2001

Joe G. said:
AmkreadGTO - I'd like to understand how you plumbed the catch can into your system. I'm pretty sure it is hooked up incorrectly, but I won't say so until you explain where each hose is connected. I see the hose off the PCV Ts into the catch can but where does the other hose from the T go? Does it pull manifold vacuum on the PCV? or does it lead to the rear bank cam cover? And how about the other line off the catch can, is that your clean air source perhaps from the rear bank turbo hose?

Regards.

really??? Let me go home and take some pix... GTPro gave me some instructions and I did it at home... i showed them the plumbing afterwards and they said it was right...

weird thing is that I'm not catching that much oil compare to RichF who has the same catch can...

David_J

· #14 · Nov 7, 2001

Where did you get the can. I can't find it in the stores.

AmkreadGTO

· #15 · Nov 7, 2001

Isle 6 in the canned food section at Albertsons (Irvine store only)... or any greddy dealer can get it for u...

MagnumForceGTO

· #16 · Nov 7, 2001

www.alamomotorsports.com has them I think. What's the correct way to hook up the catch tank? Mine is hooked up like Georges. After the PVC the line tees into the line from the rear valve cover and then into the catch tank. the other "out" from the catch tank vents to the atmosphere down a tube towards the ground. The intake tube is plugged. Is this correct?

AmkreadGTO

· #17 · Nov 7, 2001

MagnumForceGTO said:
www.alamomotorsports.com has them I think. What's the correct way to hook up the catch tank? Mine is hooked up like Georges. After the PVC the line tees into the line from the rear valve cover and then into the catch tank. the other "out" from the catch tank vents to the atmosphere down a tube towards the ground. The intake tube is plugged. Is this correct?

mine vents back to the intake tube... but other places r plumbed the same... so... JoeG, whats the correct way??

Roger G.

· #18 · Nov 7, 2001

It's useless for NA's ($99 invest for nothing)

On turbos it makes sense as the increased pressure also goes into the crankcase and therefore oil may find the way to the intake (and turbos of course).

Like it hooked up on Joes and Georges car is a way, but his eliminates the function of the crankcase ventilation in total ! Why have you guys done this ? It makes no sense to me as there is no ventilation anymore. In fact there will be a little vacuum in there instead of pressure.

The correct way is that from the intake manifold the hose goes to the front valve cover. In the front of the valvecover another hose runs to the rear one. At the rear of this one another hose then runs into the intake rubber parts after the MAS. In between the last hose the catch-can must be installed.

They way you guys did, there is no ventilation anymore as there is no circulation. You just connected rear and front together and T'ed to the intake (with the cc in between). So why you guys did this ... just because one said without asking why ? I wonder why eliminating the PCV system is done.

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AmkreadGTO

· #19 · Nov 7, 2001

que? what?? Im not understanding... can u draw a simply diagram (if u have time of course)?

They way you guys did, there is no ventilation anymore as there is no circulation. You just connected rear and front together and T'ed to the intake (with the cc in between). So why you guys did this ... just because one said without asking why ? I wonder why eliminating the PCV system is done.

u know u don't question Brian!!

wraith

· #20 · Nov 7, 2001

I think what Roger said was to keep the catch can in between where the hose that is leaking the oil into the intake goes sort of how a bagless vacuum cleaner system works to prevent the garbage from being pushed through the blower motor.

Sam

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