New Catch Can upgrade

[XfireZ51]

The WGF 1/2 mile was a fun event. unfortunately, I did only one run.
On the way to a second run, we noticed OIL from the motor which later turned out to be an Oil Pressure Sending Unit located on the passenger side of the motor in a "godforsaken spot" not accessible by humans. So I went to see Mr. Polatsidis for super Human hands. I'm sure it's a talent developed from "working" w farm animals for so many years.
Anyway, I decided to install a more "proper" catch can instead of the chincy LS-1
type I bought off eBay. I don't have the AIR pump so that spot turns out to be a good location for the catch can. Actually it's an Air Oil Separator. No baffles or steel wool accumulator.

Voila!

http://i187.photobucket.com/albums/x198/Z51Xfire/Mobile%20Uploads/51DDE1BC-9E74-4089-A9CE-915639E85C63_zpstvx4ghw7.jpg

[Paul Workman]

Looks like a good spot. Mine is a Moroso (to be installed). And, I have been eying that spot too.

I like the in/out arrangement of your unit. The Moroso is more of a "T" configuration. It is going to require some extra adaptation so in and out are from one direction like your unit.

http://i185.photobucket.com/albums/x220/6PPC_bucket/tech%20files/Morosocatchcan_zpse22b18a3.jpg (http://s185.photobucket.com/user/6PPC_bucket/media/tech%20files/Morosocatchcan_zpse22b18a3.jpg.html)

Say! What is that do-dad on the upper left edge of the photo, the one with the red and black wires???

[Dynomite]

See Details for Oil Catch Can Installation (http://forums.corvetteforum.com/c4-zr-1-discussion/2942569-tech-info-lt5-eliminated-systems.html#post1581665524)

Installation of Oil Catch Can shown on a 1991 ZR-1. I also have the same Oil Catch Can installed on 1990 ZR-1s ;)

Some more Added Systems Here LT5 Added Systems (http://forums.corvetteforum.com/c4-zr-1-discussion/2942569-tech-info-lt5-eliminated-systems.html#post1579114180)

http://i287.photobucket.com/albums/ll142/dynomite007/LT5/OilCatchCan-2.jpghttp://i287.photobucket.com/albums/ll142/dynomite007/Dynomite/7c5d965c-286d-4d8b-8c3d-cf33b33e01af.jpg
http://i287.photobucket.com/albums/ll142/dynomite007/LT5/OilCatch1.jpg
http://i287.photobucket.com/albums/ll142/dynomite007/C%20Engine%20LT5/926c5317-098a-46fc-ac3d-76edbdeff335.jpghttp://i287.photobucket.com/albums/ll142/dynomite007/C%20Engine%20LT5/411d2b7a-5963-42bc-b144-b80377d9dc42.jpg

[XfireZ51]

Paul,

This is what the catch can looks like

http://www.dhresource.com/albu_262561817_00-1.0x0/d1-spec-oil-catch-tank-racing-car-aluminum.jpg

Took just a bit of proper fitting but it works. The one thing about the placement is any interference w the headlight mechanism as it swings on/off. Need to position the can low enough to be out of the way. That's why I routed the lines under the frame rail and back up. Actually the D1 is an Air Oil Separator. Does not have baffling or use accumulator material. It relies on oil being heavier than air and dropping out of suspension when it gets to the can. That's also a cooler spots so hot oil cools off traveling thru lines and entering can. There's a sight gauge on the side indicating amount of oil in can helping to decide when to empty it. With the amount of oil I saw under the passenger side IH, I thought it was time to upgrade and suspected part of the problem was crankcase ventilation. One thing I did do w this unit was to make a gasket for the top. Didn't trust the white sealer they had on there, and the last thing I want is a huge vacuum leak. So gasket material and a bit of Permatex 2A.
And yes, it was the oil pressure unit on passenger side. When Pete pulled the connector, oil came streaming out. On his lift, we had a chance to TRY cleaning the undercarriage. Still some drips even now however.

The black/red wiring you see lead to a ballast for my HID fog lights.

[XfireZ51]

Dyno,

I had my previous can in that spot but it was pretty small. With a 92, you have the ASR unit to contend with.

[Dynomite]

Dyno,

I had my previous can in that spot but it was pretty small. With a 92, you have the ASR unit to contend with.

Yep...I am aware of that.......I only have 90s and a 91.

I also moved the main cable cluster going forward on drivers side under the Top A-Arm which cleans up the area above the Top A-Arm and gives more room in that area.

Cliff

[Tony Davila]

I built mine and placed two on both sides of the frame. Works like a charm, it is baffled and filtered. No more oil into the intake.
http://i69.photobucket.com/albums/i66/Zrace1/IMAG0408_zps84560822.jpg
http://i69.photobucket.com/albums/i66/Zrace1/OIL_zpsf75a9d91.jpg

[Karl]

How & why are you using two catch cans?

[LGAFF]

There is actually a spot on the inner fender to mount the cans with the existing screws and holes

[Tony Davila]

How & why are you using two catch cans?
Volume for the crank case. When you are WOT there is no vacuum pulling vapors out of the crank case. Two Catch Cans prevents over pressurization that can force oil into the intake.
One can is probably fine, I was going for over kill and it was R&D for me.

[Tony Davila]

There is actually a spot on the inner fender to mount the cans with the existing screws and holes
Not if you have a Z with the ASR as mentioned but maybe if your creative.... I placed mine down there because
1. Oil drains down hill.
2. I didn't want to see them.

[Tony Davila]

How & why are you using two catch cans?

Links below to my project write up on the subject.
http://www.zr1.net/forum/showthread.php?t=20318
http://www.zr1.net/forum/showthread.php?t=20320

[Karl]

See Details for Oil Catch Can Installation (http://forums.corvetteforum.com/c4-zr-1-discussion/2942569-tech-info-lt5-eliminated-systems.html#post1581665524)

Installation of Oil Catch Can shown on a 1991 ZR-1. I also have the same Oil Catch Can installed on 1990 ZR-1s ;)

Some more Added Systems Here LT5 Added Systems (http://forums.corvetteforum.com/c4-zr-1-discussion/2942569-tech-info-lt5-eliminated-systems.html#post1579114180)

http://i287.photobucket.com/albums/ll142/dynomite007/LT5/OilCatchCan-2.jpghttp://i287.photobucket.com/albums/ll142/dynomite007/Dynomite/7c5d965c-286d-4d8b-8c3d-cf33b33e01af.jpg
http://i287.photobucket.com/albums/ll142/dynomite007/LT5/OilCatch1.jpg
http://i287.photobucket.com/albums/ll142/dynomite007/C%20Engine%20LT5/926c5317-098a-46fc-ac3d-76edbdeff335.jpghttp://i287.photobucket.com/albums/ll142/dynomite007/C%20Engine%20LT5/411d2b7a-5963-42bc-b144-b80377d9dc42.jpg


Does the air flow go from the back of the plenum to the front where the throttle body is or vice versa?

[Dynomite]

Does the air flow go from the back of the plenum to the front where the throttle body is or vice versa?

Back to Front (from PCV valves to Plenum Vacuum) where the Throttle Body is.......

The Intake on the Oil Catch Can is on the top and the Exhaust is on the side.

http://i287.photobucket.com/albums/ll142/dynomite007/LT5/OilCatch1.jpg

This Purge Connection is on a 91' having the Charcoal Canister
on the passenger side behind the rear tire. The 90' Purge
Connection comes straight out and is connected to the Charcoal
Canister located under the drivers side Headlight.

http://i287.photobucket.com/albums/ll142/dynomite007/C%20Engine%20LT5/926c5317-098a-46fc-ac3d-76edbdeff335.jpg

[Tony Davila]

Don't know who this photo belongs to but this is another great spot to install a catch can.
http://i658.photobucket.com/albums/uu303/byongyun/photooilcatch.jpg

[5ABI VT]

I want a catch can now. How much oil are you guys getting over any amount of time ? I think my dipstick isn't sitting properly on the tube because it feels loose and I'm wondering if it may be affecting the System.

[Karl]

I have had my catch can installed with under 1000 miles on it and have accumulated about half a cup of oil.

These are mainly daily driving miles, with the occasional wot run here and there.

[5ABI VT]

Wow that's quite a bit! Any reccomendations on a can ? Would like a black one if possible to keep it hidden.

[Karl]

http://m.ebay.com/itm/180880329871?nav=SEARCH

I think you can get it in black. The oil is now visible so its adding up!

You can look on Ebay for more options.

[secondchance]

Don't know who this photo belongs to but this is another great spot to install a catch can.
http://i658.photobucket.com/albums/uu303/byongyun/photooilcatch.jpg

That's my setup.

[secondchance]

Here is the same can in black.
http://www.ebay.com/itm/Mishimoto-MMOCC-RB-Black-Oil-Catch-Can-/290793279511?pt=Motors_Car_Truck_Parts_Accessories&hash=item43b4a15017&vxp=mtr

[XfireZ51]

Had a shot at same can but in CF like yours.

[tf95ZR1]

I built mine and placed two on both sides of the frame. Works like a charm, it is baffled and filtered. No more oil into the intake.
http://i69.photobucket.com/albums/i66/Zrace1/IMAG0408_zps84560822.jpg
http://i69.photobucket.com/albums/i66/Zrace1/OIL_zpsf75a9d91.jpg

Hey Tony;
Isn't that where the TURBOS are supposed to go?
:-D

PS: GREAT wrap job on the headers! Looks as good
from underneath as from on top.

[Tony Davila]

Hey Tony;
Isn't that where the TURBOS are supposed to go?
:-D

PS: GREAT wrap job on the headers! Looks as good
from underneath as from on top.

Yeah maybe on the Turbos, If I were doing Turbos they would be up front behind the radiator. I would use 1985-87 fan shroud and radiator, it gives you more room. And.... thank you.

[USAZR1]

That's my setup.


Yun,do you have any better photos of your catch can set-up?

I really like Cliff's set-up too but our 94 has the ASR to contend with,also. It doesn't have a sight tube either.

[secondchance]

Yun,do you have any better photos of your catch can set-up?

I really like Cliff's set-up too but our 94 has the AST to contend with,also. It doesn't have a sight tube either.

Clint,

Let me know which area you want pics of.
Trick is to turn the "F" shaped PCV connector 180 degrees then connect "F" shaped connector to one side of the catch can. The other side of the catch can connects to the driver side PCV aluminum tube (where the "F" shaped connector use to connect to).
I believe I am using 10AN lines but you can use rubber hose if you prefer.

[USAZR1]

Clint,
Let me know which area you want pics of.
Trick is to turn the "F" shaped PCV connector 180 degrees then connect "F" shaped connector to one side of the catch can. The other side of the catch can connects to the driver side PCV aluminum tube (where the "F" shaped connector use to connect to).
I believe I am using 10AN lines but you can use rubber hose if you prefer.

I'm still not sure how/where the lines connect to the engine,Yun.
A-N lines and fittings are the only way,for me.

[secondchance]

I'm still not sure how/where the lines connect to the engine,Yun.
A-N lines and fittings are the only way,for me.

I'll hand sketch the set up. With all sorts of wire looms, etc..., digital pic may be confusing.

[LGAFF]

Whats on the inside of the catch can that changes the vapor fluid keep it from going into the plenum? I bought 2 off ebay, used, for $45....These appears to be custom made and came off of a race car or so the story goes...

I don't have pictures of the one on black car, but it is set up with a divided chamber; with the chamber divided horizontally by a grate that holds a filter......a hose runs from the inlet nipple to below the second part of the chamber. the oil vapor then must come up through the filter before exiting the outlet nipple

the one below is even more interesting, the oil must return through a series of baffles to get from the entry nipple to the exit...

http://i134.photobucket.com/albums/q115/lgaff/DSCN5875.jpg (http://s134.photobucket.com/user/lgaff/media/DSCN5875.jpg.html)

http://i134.photobucket.com/albums/q115/lgaff/DSCN5876.jpg (http://s134.photobucket.com/user/lgaff/media/DSCN5876.jpg.html)

[XfireZ51]

Lee,

Those are nearly identical to what I got. As the oil vapor cools it drops out of suspension to the bottom of the can

[5ABI VT]

Anyone have any info on what size fittings etc are needed to connect this to the factory Pcv system ? I see Tony has 2 cans.. Are there 2 Pcv valves or are you just adding 2 cans in line ?

[secondchance]

Anyone have any info on what size fittings etc are needed to connect this to the factory Pcv system ? I see Tony has 2 cans.. Are there 2 Pcv valves or are you just adding 2 cans in line ?

I think I used AN4 fittings and AN4 SS braided lines. I'll double check.

[Tony Davila]

Anyone have any info on what size fittings etc are needed to connect this to the factory Pcv system ? I see Tony has 2 cans.. Are there 2 Pcv valves or are you just adding 2 cans in line ?

I have two PVC valves at the entry point of my canisters. I believe the size is of the vacuum port of my cans are 3/8" inner dia.

IH port side on the can is 3/4" to accommodate the PVC then reduced to 3/8" which then connects to the IH port tube.

Left can is connected to Left side IH. Right side can connected to right IH port tube.

Vacuum source is shared via T connector.

Below is a diagram for a single can I built for a couple of Z buddies.
http://i69.photobucket.com/albums/i66/Zrace1/OILCanister_zps143d1933.jpg

Below is a can I built for a L98 which is to be mounted under the passengers headlight.
http://i69.photobucket.com/albums/i66/Zrace1/3343794300257848262-attachment-1-100MEDIAIMAG0729_zps992b6c56.jpg

Yes........... this are used propane tanks.
http://i69.photobucket.com/albums/i66/Zrace1/IMAG0685_zps5d58e244.jpg

Single Canister mounted onto my buddies Z. This is the drivers side.
http://i69.photobucket.com/albums/i66/Zrace1/IMAG0732_zps4f4a8aad.jpg

[LGAFF]

Catch can on the 90

http://i134.photobucket.com/albums/q115/lgaff/DSCN5877.jpg (http://s134.photobucket.com/user/lgaff/media/DSCN5877.jpg.html)

[5ABI VT]

I have two PVC valves at the entry point of my canisters. I believe the size is of the vacuum port of my cans are 3/8" inner dia.

IH port side on the can is 3/4" to accommodate the PVC then reduced to 3/8" which then connects to the IH port tube.

Left can is connected to Left side IH. Right side can connected to right IH port tube.

Vacuum source is shared via T connector.

Below is a diagram for a single can I built for a couple of Z buddies.
http://i69.photobucket.com/albums/i66/Zrace1/OILCanister_zps143d1933.jpg

Below is a can I built for a L98 which is to be mounted under the passengers headlight.
http://i69.photobucket.com/albums/i66/Zrace1/3343794300257848262-attachment-1-100MEDIAIMAG0729_zps992b6c56.jpg

Yes........... this are used propane tanks.
http://i69.photobucket.com/albums/i66/Zrace1/IMAG0685_zps5d58e244.jpg

Single Canister mounted onto my buddies Z. This is the drivers side.
http://i69.photobucket.com/albums/i66/Zrace1/IMAG0732_zps4f4a8aad.jpg

Alright what will it cost me =D>

[USAZR1]

I think I used AN4 fittings and AN4 SS braided lines. I'll double check.


AN4 = 1/4" so my guess would be either AN8 or AN10,Yun.

[Tony Davila]

Alright what will it cost me =D>

Sorry brother, I will not be able to make anymore due to extremely busy schedule and upcoming job. It will be a long while.

[5ABI VT]

Sorry brother, I will not be able to make anymore due to extremely busy schedule and upcoming job. It will be a long while.

No problem at all :) In the meantime .. any suggestions on a good can off ebay or any vendor? Ive never looked at the pcv system is it under the back of the plenum and only accessible when off? Planning to pull the plenum soon and am wondering if that's when I should set it up.

[5ABI VT]

What are your guys thoughts on a pcv + catch cans + Piping from catch can to the header collectors (scavenging? forget the term for it).

[secondchance]

What are your guys thoughts on a pcv + catch cans + Piping from catch can to the header collectors (scavenging? forget the term for it).

EGR connection? It's an interesting thought. As long as you maintain vacuum crank case fume should get burned off. Is that the idea?

[Tony Davila]

What are your guys thoughts on a pcv + catch cans + Piping from catch can to the header collectors (scavenging? forget the term for it).
I have already tried that, it doesn't work. I got 1" of vacuum at idle and nothing all the way to 7000RPM. It won't work with a muffler system because it creates some back pressure. I ran a vacuum gauge to the can and tried the EVAC header system. So forget about it and save your money. Engine vacuum or vacuum pump will work fine with any catch can that provides oil droplet separation.
http://i69.photobucket.com/albums/i66/Zrace1/IMAG0423_zpsd112a25c.jpg
http://i69.photobucket.com/albums/i66/Zrace1/IMAG0420_zps5ec3f13d.jpg
I no longer have this B&B exhaust system, I have OEM with cutouts.

[5ABI VT]

I have already tried that, it doesn't work. I got 1" of vacuum at idle and nothing all the way to 7000RPM. It won't work with a muffler system because it creates some back pressure. I ran a vacuum gauge to the can and tried the EVAC header system. So forget about it and save your money. Engine vacuum or vacuum pump will work fine with any catch can that provides oil droplet separation.
http://i69.photobucket.com/albums/i66/Zrace1/IMAG0423_zpsd112a25c.jpg
http://i69.photobucket.com/albums/i66/Zrace1/IMAG0420_zps5ec3f13d.jpg
I no longer have this B&B exhaust system, I have OEM with cutouts.

Very cool. I do believe the b&b is incredibly restrictive. ive seen inside the mufflers and I really wish I kept my earlier system I know the later version I have now is seriously walled and baffled its like a maze inside.
I always like to tell people to make a deep bassy/boomy sound with their mouths.. in order to do that you have to really restrict the airflow.. = b&b
;)

[5ABI VT]

I have two PVC valves at the entry point of my canisters. I believe the size is of the vacuum port of my cans are 3/8" inner dia.

IH port side on the can is 3/4" to accommodate the PVC then reduced to 3/8" which then connects to the IH port tube.

Left can is connected to Left side IH. Right side can connected to right IH port tube.

Vacuum source is shared via T connector.

Below is a diagram for a single can I built for a couple of Z buddies.
http://i69.photobucket.com/albums/i66/Zrace1/OILCanister_zps143d1933.jpg

Below is a can I built for a L98 which is to be mounted under the passengers headlight.
http://i69.photobucket.com/albums/i66/Zrace1/3343794300257848262-attachment-1-100MEDIAIMAG0729_zps992b6c56.jpg

Yes........... this are used propane tanks.
http://i69.photobucket.com/albums/i66/Zrace1/IMAG0685_zps5d58e244.jpg

Single Canister mounted onto my buddies Z. This is the drivers side.
http://i69.photobucket.com/albums/i66/Zrace1/IMAG0732_zps4f4a8aad.jpg

Trying to get a wrap on the pcv system but I have so many things on my mind and projects going on :icon_scra .

SO there are 2 pcv valves? Are they seperate valves/lines doing the same thing? Just wondering if I should go 2 cans instead of 1. Are there any photos of the pcv system anywhere?

[Tony Davila]

Trying to get a wrap on the pcv system but I have so many things on my mind and projects going on :icon_scra .

SO there are 2 pcv valves? Are they seperate valves/lines doing the same thing? Just wondering if I should go 2 cans instead of 1. Are there any photos of the pcv system anywhere?

The picture below shows where I installed the PVC valve, I did this on both cans. They are inline sandwiched in between the hoses. After studying the purpose of the PVC valve I have determined that they are not necessary for my set up. They are basically a one way check valve that opens with vacuum and in the absence of vacuum crank pressure would push them opened anyway. So I believe they are not necessary unless you just want to install them because you want too. Hope this helps.
http://i69.photobucket.com/albums/i66/Zrace1/IMG_0252_zps7f3a703c.jpg

[XfireZ51]

Thought I would resurrect this topic for a bit. My catch can has been installed now for about 6 weeks. With several catch can threads active right now, I wanted to ask if anyone has noticed a change to their exhaust. How do your tips look? Has there been any noticeable change?