DIY: Dual Oil Catch Cans 370Z

Japanjay · 08-25-2012, 01:54 AM

Super interested in this since I think I am getting tons of blow by and there is a good possibility Nissan will be giving me a new short block due to severe oil consupmtion, which I think is just blow-by and will happen with the new short block. Was talking with a good friend who is into the STI scene and he was saying that they experience severe oil consumption once built with higher HP in mind. Same thing I think the motor I have is doing since it has already been replaced once, and looking like for the third time. If I am getting severe oil consumption again I am going to go this route with a dual catch can system.

1: How much volume do these hold?

2: You stated after ~900 miles you were surprised by the amount of oil caught. How much was there exactly in each one?

3: How hard are you driving this car honestly? (Comparing to my driving style so I kinda gauge an increase or decrease in total consumed volume)

4: My friend mentioned he knows of several kits that are designed to recirculate the caught oil back into oil pan so it is not wasted, most important point so as not to run low, and no need to constantly empty, another plus. Have you thought of that, and if so do you a possible way, ie: tapping a bung on the oil pan? Only reason I ask is because I was talking to another friend who is a mechanic on some trick cars and suv's and I think he going to do this for me if a: the dealership changes the short block and the consumption is not corrected or b: they figure out som skeezy way of avoiding the replacement (which I dont get the vibe they will attempt after talking with them about it)

sixpax · 08-25-2012, 06:28 AM

Quote:

Originally Posted by Japanjay

Super interested in this since I think I am getting tons of blow by and there is a good possibility Nissan will be giving me a new short block due to severe oil consupmtion, which I think is just blow-by and will happen with the new short block. Was talking with a good friend who is into the STI scene and he was saying that they experience severe oil consumption once built with higher HP in mind. Same thing I think the motor I have is doing since it has already been replaced once, and looking like for the third time. If I am getting severe oil consumption again I am going to go this route with a dual catch can system.

1: How much volume do these hold?

2: You stated after ~900 miles you were surprised by the amount of oil caught. How much was there exactly in each one?

3: How hard are you driving this car honestly? (Comparing to my driving style so I kinda gauge an increase or decrease in total consumed volume)

4: My friend mentioned he knows of several kits that are designed to recirculate the caught oil back into oil pan so it is not wasted, most important point so as not to run low, and no need to constantly empty, another plus. Have you thought of that, and if so do you a possible way, ie: tapping a bung on the oil pan? Only reason I ask is because I was talking to another friend who is a mechanic on some trick cars and suv's and I think he going to do this for me if a: the dealership changes the short block and the consumption is not corrected or b: they figure out som skeezy way of avoiding the replacement (which I dont get the vibe they will attempt after talking with them about it)

1. Not sure. I have the Micro Style which is a cylinder 2 inches in diameter and 4.5 inches tall. Not all of that area is available for "storage".

2. Didn't measure it, but I would guess around 3/4 of an inch at the bottom of one and about 1/2 inch at the bottom of the other.

3. Like a baby on the street, like an old fat guy on the track (only twice) ... car is not a DD so does not get driven every day.

4. Great idea to recirculate, I think. In looking at the stuff collected in my cans I don't think I am very interested in shooting it back into the block. Condensation makes it a little "watery" in texture and appearance. I'll just dump it out and be thankful I am keeping that out of my engine.

Coon-azz · 05-20-2013, 08:54 AM

Quote:

Originally Posted by sixpax

1. Not sure. I have the Micro Style which is a cylinder 2 inches in diameter and 4.5 inches tall. Not all of that area is available for "storage".

2. Didn't measure it, but I would guess around 3/4 of an inch at the bottom of one and about 1/2 inch at the bottom of the other.

3. Like a baby on the street, like an old fat guy on the track (only twice) ... car is not a DD so does not get driven every day.

4. Great idea to recirculate, I think. In looking at the stuff collected in my cans I don't think I am very interested in shooting it back into the block. Condensation makes it a little "watery" in texture and appearance. I'll just dump it out and be thankful I am keeping that out of my engine.

Ok. so this is were I get confused. My 2012 is a daily driver (120 miles a day). I drive in all kinds of conditions; sit/go traffic, fast highway speeds, and back and forth between the two daily. Now I've got about 18k miles on my ride and have seen almost no oil consumption issue from day one. So either:
1) Im lucky
2) the 2012s have fewer issues
3) I'm thinking that you drive you car pretty hard to have the much blow-by
4) am I missing something here....?

Also, Love the setup. Just some advice if it matters. The SS hoses seem to be sitting on top of your intakes? Over time they will grind the steel down if you don't have something between them...lesson learned from my last set up.

synolimit · 05-21-2013, 12:44 AM

Quote:

Originally Posted by Coon-azz

Ok. so this is were I get confused. My 2012 is a daily driver (120 miles a day). I drive in all kinds of conditions; sit/go traffic, fast highway speeds, and back and forth between the two daily. Now I've got about 18k miles on my ride and have seen almost no oil consumption issue from day one. So either:
1) Im lucky
2) the 2012s have fewer issues
3) I'm thinking that you drive you car pretty hard to have the much blow-by
4) am I missing something here....?

Also, Love the setup. Just some advice if it matters. The SS hoses seem to be sitting on top of your intakes? Over time they will grind the steel down if you don't have something between them...lesson learned from my last set up.

How did you break the motor in? Or did you not and it was a test drive car a few others drove first? How often do you change your oil? How do you know you didn't lose any? Do you measure before and after a oil change? Every car will have blow by, just depends how much so you will lose some oil over a period of time.

Power and consumption are directly related to break in...Break In Secrets--How To Break In New Motorcycle and Car Engines For More Power. If you're doing good on oil than I bet the motor was done right. Hell maybe nissan broke it in right on the assembly line testing the motor to full power. I know one of the Japanese bikes (Suzuki?) does this!!

sixpax · 05-21-2013, 05:22 AM

Quote:

Originally Posted by Coon-azz

Also, Love the setup. Just some advice if it matters. The SS hoses seem to be sitting on top of your intakes? Over time they will grind the steel down if you don't have something between them...lesson learned from my last set up.

Great point ... and one I recently discovered emptying the cans. Rubbed a swath of paint off the intake tubes so going to remedy that.

08-25-2012, 01:54 AM	#1 (permalink)
Japanjay Track Member Join Date: Mar 2012 Location: Puyallup Posts: 856 Drives: 09 Nissan 370z MB M6 Rep Power: 16	Super interested in this since I think I am getting tons of blow by and there is a good possibility Nissan will be giving me a new short block due to severe oil consupmtion, which I think is just blow-by and will happen with the new short block. Was talking with a good friend who is into the STI scene and he was saying that they experience severe oil consumption once built with higher HP in mind. Same thing I think the motor I have is doing since it has already been replaced once, and looking like for the third time. If I am getting severe oil consumption again I am going to go this route with a dual catch can system. 1: How much volume do these hold? 2: You stated after ~900 miles you were surprised by the amount of oil caught. How much was there exactly in each one? 3: How hard are you driving this car honestly? (Comparing to my driving style so I kinda gauge an increase or decrease in total consumed volume) 4: My friend mentioned he knows of several kits that are designed to recirculate the caught oil back into oil pan so it is not wasted, most important point so as not to run low, and no need to constantly empty, another plus. Have you thought of that, and if so do you a possible way, ie: tapping a bung on the oil pan? Only reason I ask is because I was talking to another friend who is a mechanic on some trick cars and suv's and I think he going to do this for me if a: the dealership changes the short block and the consumption is not corrected or b: they figure out som skeezy way of avoiding the replacement (which I dont get the vibe they will attempt after talking with them about it) Last edited by Japanjay; 08-25-2012 at 01:58 AM.

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