where to install oil catch can?

[03MSPRO]

I just received my Greddy oil catch can. I looks awesome, but I did not think it was so big. Can you guys give any ideas where I can install it? Evrything looks pretty tight under there!! I was thinking under the air box. It is about the only place I see that there is anough room, but I will have to get under the car to drain it.

[jred321]

what about on the firewall? i haven't looked closely though but there may be some room back there

[03MSPRO]

I did not look at the firewall, thanks. It will have to be very low though and I will still have to crowl under the car to drain it, oh well.....

[jred321]

ehh, just do it when you change your oil since you'll be under there anyways :)

[instylz]

Sorry to jack your thread but what is that other oil catcher that is in the form of a filter? That would need to be drained about once a month rt? Thanks

[instylz]

double post...sorry

[03MSPRO]

well, I looked at the firewall and there is no room and it is also too far. I decided to mount it under the air box. Once I install a real SRI (AEM?), there will be more room and it will be easier to drain.

[03MSPRO]

Originally posted by instylz
Sorry to jack your thread but what is that other oil catcher that is in the form of a filter? That would need to be drained about once a month rt? Thanks

http://www.tgilmore.com/talon/catchcan.html

I decided to get the Greddy for only $80. I like ncide things, what can I say? I did not like that ghetto "oil catch can" using a fule filter. In the long run, the Greddy pays for itself, because you don't have to keep changing it, just drain it.

[instylz]

True I may go with it. Please post pics when its installed I want to see what it looks like. :)

[03MSPRO]

I'll do that tomorrow. It is dark out now and I haven't finished. I still to run the hoses.

[BMC]

Yeah, post pics if you could, I'm thinking about getting one. Where'd you get it from? $80 seems like a good price.

[03MSPRO]

Options Auto Salon

[03MSPRO]

I finished the install while at work. I will take pictures when I get home. Hopefully I can get home before dark. Evything looks very good. I did not even have to drill any holes. There is a single threaded hole that I used. It work perfect. Eventhough there is plenty of room, I wished the can was a lil smaller, but at least I won't have to drain as often. When I orderd the can, I thought I was getting the old Greddy can, which is smaller and it was a remavable top which makes draining easier so keep that in mind. The good thing is that its that then new style can is actually cheaper and it does come with the mounting brakets. Before the brackert was sold separatley.

[03MSPRO]

http://www.imagestation.com/album/?id=4288409945&congratulation_page=Y

[BMC]

Thanks, that should help when mine gets here. Looks good.

[03MSPRO]

After 2 days of hard driving, I don't think my oil catch can is working the way it's supposed to the way I have it hooked up. There's no sign of oil going from the valve cover to the oil catch can. The clear hoses look just as clean as they did when they arrived. If this was a NA car like I am used to, it would be a piece of cake, but I was under the impression that turbo cars were different. MAYBE everything is fine and I just haven't waited long enough, but my experience tells me that at least the hoses should show some signs of oil. That's not the case so far. See, I thought the PCV valve closes under boost and the only way for the valve cover to vent was through the turbo inlet pipe, causing oil to be sucked into the turbo and through the IC pipes and eventually back into the IM, which in a way does not seem right to me. I am going to leave it the way it is for a few days before I change it. After that, I will run a hose from the PCV valve to the oil catch can and then back to the IM.

Q: What am I trying to accomplish?
A: Eliminate the oil going back into the combustion chamber.

Q: Why?
A: Everyone knows that oil in the combustion chamber lowers the octane and that may lead to detonation under certain conditions.

I am kind of dissapointed beacuse nobody, including the supposed tuners, have been able to help me on this so far? What's wrong people? Oil catch cans are not a new thing! We should know how to hook it up right.
I have seen the instruction by Road Race Engineering and that's the way I have it hooked up. Maybe our PCV valve is the problem? Is the pCV valve in the MSP the same one used on regular Proteges?

[jred321]

An option for cars that never see use on the streets is to disable the PCV valve. Under normal operation the PCV valve allows crankcase air to be drawn into the intake manifold when you have vacuum in the manifold. Once you make boost pressure, the PCV valve closes and the only ventilation the crankcase gets is thru the small hose that was running to the turbo inlet.
from roadraceengineering.com for dsm's, i would assume our pcv is the same but i'm not positive

i would say that you wouldn't see much coming from the pcv valve since it is closed under boost and you need the most ventilation (thus the most blowby) during boost. on an na car when revving high the pcv would still be open, so it would get a lot of blow by and a catch can would help there, but it is closed when revving high on a turbo car (since you will build boost when revving high presumably), so not much blow by will occur. this is probably why all dsm sites i've been to have info for hooking up catch cans do it from the crankcase vent and not the pcv. i would say hook it up to the crankcase vent and not the pcv valve, but i honestly don't know a ton about this so someone with more experience may be able to help.

[03MSPRO]

Thanks for the response. It is nice to at least get someone's opinion. I read the same thing about the PCV valve from the Road Race web site, but I don't know if our PCV would behave the same way.
When I had my 99 GS-R, I had a Moroso Oil catch can. It would collect about 1 cup of oild every 3k miles. The breather hose was not hooked up to the oil can, but I left it alone connected to the air intake pipe becaue according to the Helm's (Acura's service manual) manual, air would actually travel from the air intake pipe INTO the breather hose and to the crank case and not the other way around like most people think. It is call Positive Crankcase Ventilation. I don't know if the Protege is the same way. Sorry, I am (was) a Honda fan!

[jred321]

i bet you could email roadrace or maybe even tripoint and they would probably know as i assume the system acts the same in most cars as it's a pretty standard system.

hondas never see positive pressure so the pcv won't close when the motor is revving high so some oil probably makes its way back. when we rev high, we build boost, so it is closed and no blowby. i know you understand this but at least this is a free bump for someone who knows for sure :)

my guess is that our pcv acts like the dsm pcv but i'm not sure, i'd say shoot an email to roadrace, tripoint and flyin miata and they'll know for sure if our pcv is closed under boost or not.

[03MSPRO]

ok, I'll leave alone for now the way it is until I can find out something else.

[JFW]

I have installed a Perrin catch can on the PCV system in my MSP. The PCV valve is plugged into a gromet in the cam cover casting. There is a short ell shaped hose that connects the valve to a tee which splits the exhaust from the PCV valve. If you look at the bore of that ell shaped hose you will see oil in it.
This is the point that I tied into to run to the catch can. The return line from the can ties into the tee that the ell shaped hose was connected to.
The Perrin catch can has a bolt that comes out of the bottom and threads into a already tapped hole in the fender near the airbox intake horn. If you have or are planning to have a non stock intake, you will have to find a different location to mount it.
The hose that goes from the intake duct right before the turbo, too the cam cover, is a vent air INLET hose. This hose vents the camshaft gallery to atmosphere. There should normally never be any oil in this line.
Note*** any catch can should have the inlet hose routed so as to prevent low spots were oil can accumulate and block the line. It would also be more effective if the can is mounted lower than the PCV valve.

[GearSlammer]

i dont think oil accumulates that fast. think about it this way...if your oil catch can would fill up that fast, you would have to replace the oil caught in the can with fresh oil, because the oil in the pan is low since its in the can. make sense? id wait a little longer to see results.

[03MSPRO]

Originally posted by JFW
I have installed a Perrin catch can on the PCV system in my MSP. The PCV valve is plugged into a gromet in the cam cover casting. There is a short ell shaped hose that connects the valve to a tee which splits the exhaust from the PCV valve. If you look at the bore of that ell shaped hose you will see oil in it.
This is the point that I tied into to run to the catch can. The return line from the can ties into the tee that the ell shaped hose was connected to.
The Perrin catch can has a bolt that comes out of the bottom and threads into a already tapped hole in the fender near the airbox intake horn. If you have or are planning to have a non stock intake, you will have to find a different location to mount it.
The hose that goes from the intake duct right before the turbo, too the cam cover, is a vent air INLET hose. This hose vents the camshaft gallery to atmosphere. There should normally never be any oil in this line.
Note*** any catch can should have the inlet hose routed so as to prevent low spots were oil can accumulate and block the line. It would also be more effective if the can is mounted lower than the PCV valve.

That's the other way I was thinking of hooking it up. I had the feeling that the hose from the valve cover to the turbo was an INLET hose for fresh air only.

[Bremmer]

http://www.konigwheels.com/catalog_product_details.cfm?CategoryID=3&ss_id=75

Will the middle one work in the link? It's the powersteering fluid tank and it looks smaller. Don't they pretty much all do the same thing so would it work for an oil catch can? Or would I have to get the one specifically made for the oil catch can?

[Bremmer]

anyone? the guy at the speedshop was saying it does the same thing but it has no drain like the other two do.

[JFW]

I don't think that any of those will work on a PCV system unless you lay them on their side. The outlet of the can should be as high or higher than the inlet to the can.

[Bremmer]

huh? the outlet is higher than the inlet.. At least that's what it looks like to me.. anyone else?

[JFW]

/members/JFW/can.jpg
There needs to be a sump or well for oil droplets in the PCV exhaust to fall into. The inlet into the can should be above the highest level that you will allow oil to acumulate into the can. The outlet from the can must also be at this level or higher.
The picture above is a catch can system that I built for my 98 Z28 1LE.

[03MSPRO]

"The PCV valve is closed under boost.

To install a catch can on your motor you will need to first, buy a catch can. :^) Then remove the hose from the cam cover to the intake pipe. Plug the hole in the intake pipe. Run a hose from the cam cover to the catch can.

Ken Hill
Flyin' Miata
1-800-FLYMX5S orders
1-970-242-3800 tech info
ken@flyinmiata.com
www.flyinmiata.com
www.fmprotege.com "

There it is. I guess I have hooked up right.