- Location
- Vancouver, Canada
Nice finding Brad.
Is that PCV from the rocker cover hard to access? If not, I will try to measure it up tomorrow.
Is that PCV from the rocker cover hard to access? If not, I will try to measure it up tomorrow.
Jumbo Oil Catch
- Thread starter jumbosrule
- Start date
The one on the passenger side rocker cover is easy to measure.
The one under the throttle body is a PAIN. When I did my oil catch install, I had to remove the intake tube and the throttle body to remove the old hose. Luckily - I still have it and I will measure it tonight.
The one under the throttle body is a PAIN. When I did my oil catch install, I had to remove the intake tube and the throttle body to remove the old hose. Luckily - I still have it and I will measure it tonight.
- Location
- Vancouver, Canada
Then I will try to the easy one. 
- Location
- Vancouver, Canada
The passenger side rocker cover PCV hose has approximately 5/8" OD and 3/8" ID. The wall thickness of the hose is about 1/8". That runs to the lower manifold collector. The collector metal nipple is about 3/8" OD.
Hope this will help. :.smile:
Hope this will help. :.smile:
I measured in metric and only the inner diameter of each hose since that's really what we need to connect to the can. I can always convert to English if needed when ordering. I emailed Saikou with this info and asked for a photo or drawing.
Passenger PCV - 10mm
Driver's PCV - 16mm
Passenger PCV - 10mm
Driver's PCV - 16mm
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Update! Rec'd email from Saikou along with drawings of the dual inlet design. He also mentioned that any style of fitting could be welded on. NPT, AN, hose barb, etc. It seems like he's willing to customize pretty much anything for no additional charge. I still like the look of the 42 draft stealth can a bit better, but getting exactly the configuration I'm looking for in the Saikou is a pretty big perk.
On a related find - I heard from a buddy about an oil catch engineered for high horsepower Honda race cars. The design is completely unique, but is a variation of the filter/breather design I mentioned. Apparently this kit underwent iteration testing to determine the proper hose size. No chance I'd buy it, but I get the concepts. Pretty cool that somebody took the time to figure it out like this. It would require additional rocker cover valves/vents to be added.
http://www.t1racedevelopment.com/en/products/details/89/1/catch-cans/t1-crankcase-catch-can.html
On a related find - I heard from a buddy about an oil catch engineered for high horsepower Honda race cars. The design is completely unique, but is a variation of the filter/breather design I mentioned. Apparently this kit underwent iteration testing to determine the proper hose size. No chance I'd buy it, but I get the concepts. Pretty cool that somebody took the time to figure it out like this. It would require additional rocker cover valves/vents to be added.
http://www.t1racedevelopment.com/en/products/details/89/1/catch-cans/t1-crankcase-catch-can.html
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- Location
- Vancouver, Canada
Sounds great.
Any chance you post Saikou's design drawing?
Any chance you post Saikou's design drawing?
I've been waiting to see how this would settle out (which system/which maker everyone seems to be leaning towards) I contacted PG Performance about the 42 draft OCC's and they would be interested in a Group buy if 42 draft is the OCC of choice. If not no worries.
- Location
- Vancouver, Canada
So, GB for 42 draft or Saikou? What bard size you plan on going with the Saikou can?
- Location
- Vancouver, Canada
Any updates on the catch can?
Hey guys - yeah, sorry I was out of town for a wedding weekend.
I emailed Saikou before I left and he had responded. Here's the latest:
Since Saikou is willing to customize every order for the same price, I'm pretty sure we have come up with a really good catch can design for NA. Here it is - and this is what all you guys should order if you decide this is your application - with two changes to the drawing: One inlet tube will be 3/8". The other inlet tube and the outlet tube will be 5/8". This will allow a bolt-up application along with the proper length hoses, which we will figure out. I have asked him if he can supply the hoses too - making this a bolt-up kit.
View attachment 188907
Now I'm thinking ahead to my Forced Induction set-up. Using the above drawing as a starting point, we have been talking about a couple more changes.
Because we were adding a second inlet to the can, I asked about the snorkel (the tube that goes to the bottom of the can). The current design was using a 3/4" snorkel, but Saikou offered to make it larger (1"), matched to a larger outlet (1") on the can to keep all the scaling consistent - no restrictions.
Also, I plan to mount this catch can exactly where my current catch can is located. This is just behind the power steering reservoir. I removed a wire harness bracket from this location and have been using the holes to mount the can.
View attachment 188908
This is where my new can will be going too. So I know where the hoses are coming from and I asked to re-position the inlet/outlet fittings so they are facing the right way. I chopped up his drawing (just the small top-view sketch in the middle of the dwg) and showed him what I wanted. He said it was no problem to change the orientation to look like that.
View attachment 188909
SO, with a 1" outlet I now have to connect to my intake barb, which is 5/8. My plan is to use a reducer for right now because I am still NA. Once I go FI, my intake tube will change anyway, so I can worry about a 1" hose fitting barb at that point.
You guys can use the very same design with a reducer, or you can request the 5/8" outlet fitting to mate to your OEM intake barb. You will still need new hoses either way.
I think I might pull the trigger on this pretty soon - especially if Saikou can provide the hoses to make it a complete kit. If any of you guys want to find good quality vacuum hoses in the proper sizes, that might be helpful to getting the best prices.
I emailed Saikou before I left and he had responded. Here's the latest:
Since Saikou is willing to customize every order for the same price, I'm pretty sure we have come up with a really good catch can design for NA. Here it is - and this is what all you guys should order if you decide this is your application - with two changes to the drawing: One inlet tube will be 3/8". The other inlet tube and the outlet tube will be 5/8". This will allow a bolt-up application along with the proper length hoses, which we will figure out. I have asked him if he can supply the hoses too - making this a bolt-up kit.
View attachment 188907
Now I'm thinking ahead to my Forced Induction set-up. Using the above drawing as a starting point, we have been talking about a couple more changes.
Because we were adding a second inlet to the can, I asked about the snorkel (the tube that goes to the bottom of the can). The current design was using a 3/4" snorkel, but Saikou offered to make it larger (1"), matched to a larger outlet (1") on the can to keep all the scaling consistent - no restrictions.
Also, I plan to mount this catch can exactly where my current catch can is located. This is just behind the power steering reservoir. I removed a wire harness bracket from this location and have been using the holes to mount the can.
View attachment 188908
This is where my new can will be going too. So I know where the hoses are coming from and I asked to re-position the inlet/outlet fittings so they are facing the right way. I chopped up his drawing (just the small top-view sketch in the middle of the dwg) and showed him what I wanted. He said it was no problem to change the orientation to look like that.
View attachment 188909
SO, with a 1" outlet I now have to connect to my intake barb, which is 5/8. My plan is to use a reducer for right now because I am still NA. Once I go FI, my intake tube will change anyway, so I can worry about a 1" hose fitting barb at that point.
You guys can use the very same design with a reducer, or you can request the 5/8" outlet fitting to mate to your OEM intake barb. You will still need new hoses either way.
I think I might pull the trigger on this pretty soon - especially if Saikou can provide the hoses to make it a complete kit. If any of you guys want to find good quality vacuum hoses in the proper sizes, that might be helpful to getting the best prices.
- Location
- Vancouver, Canada
Nice. Great work Jumbo.
I think Saikou can provide threads instead of welded inlet/outlet so we can change the barb fittings around.
I will stick with the OEM size for now. IF there is one day I am going FI with my FX, then I will change the barbs.
I think Saikou can provide threads instead of welded inlet/outlet so we can change the barb fittings around.
I will stick with the OEM size for now. IF there is one day I am going FI with my FX, then I will change the barbs.
Final update - due to wanting to go to a larger snorkel, Saikou opted to move to the Stage 3 can.
He suggested we search for "heater hose" rather than vacuum hose for the larger diameters required.
He suggested we search for "heater hose" rather than vacuum hose for the larger diameters required.
- Location
- Southern California
been following this thread....
just saw this from another vendor
http://vibrantperformance.com/catalog/product_info.php?cPath=1020_1207&products_id=1059
just saw this from another vendor
http://vibrantperformance.com/catalog/product_info.php?cPath=1020_1207&products_id=1059
Attachments
Nice find - cool looking can. I like the mounting bracket.
Concerns:
1) I've tried to stay away from any sight tubes. The plastic push fittings just don't seal very well. I actually had a sight tube on the can I'm using now and had to remove it and plug the holes. Sight tubes might be ok for NA, but once the pressures increase I want as few leak paths as possible.
2) I like the welded fittings, but threaded fittings have restrictions inside just due to the design. Try to find a 16mm ID (inner diameter) fitting. If you find one that will mate up to the can, then this particular concern of mine is gone.
I put in my order for the modified Saikou. Still need to find hoses for it, but will do that and post results.
Concerns:
1) I've tried to stay away from any sight tubes. The plastic push fittings just don't seal very well. I actually had a sight tube on the can I'm using now and had to remove it and plug the holes. Sight tubes might be ok for NA, but once the pressures increase I want as few leak paths as possible.
2) I like the welded fittings, but threaded fittings have restrictions inside just due to the design. Try to find a 16mm ID (inner diameter) fitting. If you find one that will mate up to the can, then this particular concern of mine is gone.
I put in my order for the modified Saikou. Still need to find hoses for it, but will do that and post results.
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- Location
- Vancouver, Canada
Did you go for the welded fittings? I am thinking of threaded fittings at this point.
Welded pipe fittings. Since they don't require a hose fitting at all, I would consider these the "most" universal.
Just like in my concern in my last post, I question the ability to find larger threaded fittings with the proper inner diameter.
Just like in my concern in my last post, I question the ability to find larger threaded fittings with the proper inner diameter.
- Location
- Portland, OR
I think the Jumbo Oil Catch Can Extraordinaire should include an air filter between the can and plenum, like this:
http://www.graco.com/Internet/T_PDB.nsf/SearchView/In-LineAirFiltersCoalescers
I couldn't tell whether the ARC unit includes any kind of filtration...
Also, in the interest of design overkill... A solenoid switch that opens the drain valve on the can (when the ignition is turned off?) to allow the captured oil to drain back into the system.
Great job on this project! I always enjoy reading about your ventures.
http://www.graco.com/Internet/T_PDB.nsf/SearchView/In-LineAirFiltersCoalescers
I couldn't tell whether the ARC unit includes any kind of filtration...
Also, in the interest of design overkill... A solenoid switch that opens the drain valve on the can (when the ignition is turned off?) to allow the captured oil to drain back into the system.
Great job on this project! I always enjoy reading about your ventures.
No filter!
Jumbo what do you think of Boomba's? I have their oil cap and may end up with their throttle body for the Evo, but I've been holding back on deciding on a catch can.
I like yours, and it's similar to Boomba's, and you can rarely beat Boomba's pricing.
And... ironically enough... here's their JUMBO CATCH CAN! (3 viewing windows equidistant from each other)
Man I love this forum! This is exactly why I started the thread - a bunch of people interested makes finding things so much easier. Of course, all the new discussion is going to cause a bit of procrastination at work. Oh well!
Quote:
Originally Posted by tchuck
I think the Jumbo Oil Catch Can Extraordinaire should include an air filter between the can and plenum.
Ok so the graco product you linked to is an oil catch can. You could use this all by itself and it's meant for compressed air so I bet it would function perfectly. In fact, it's probably a better option than anything we have posted yet in terms of how it performs. It's meant for industrial use, has filter options, flow capacity options and replaceable filter media. Didn't see a cost on it.
The can I ordered does have a filter, but it's wire mesh that is meant to give the oil something to hit & stick to so that it can then drain to the bottom. The next step would be to use baffles, which is what the ARC design uses. Some cans don't use a filter media or baffles - they use gravity and so they are not as effective. You could definitely take it a step further and use a real air filter meant for oil separation after the can, but that would be filtering twice, and you would have to make sure you are not causing any pressure restrictions with the second filter.
Here's the drawing of my custom application - Saikou sent this to me this morning to approve before fabrication. See the "screen & mesh assembly" in zone A2 of the dwg? That's the filter media.
Quote:
Originally Posted by tchuck
Also, in the interest of design overkill... A solenoid switch that opens the drain valve on the can (when the ignition is turned off?) to allow the captured oil to drain back into the system.
Yes, you can do this. And some people do. However...
The blow-by gasses in the rocker cover are not just oil, gasses also contain some of the fuel/air mixture and even a bit of exhaust, which contains carbon. I don't know how much of each of these "contaminants" are actually in the oil mixture collected, but I'd rather just eliminate it completely. If you do recirculate, it's probably not enough to foul up your engine oil too badly, especially if you change every 3000 miles. But if I'm going through the trouble to make my system run more cleanly, then completely removing the blow-by products is the way to go for me.
Quote:
Originally Posted by Frankiago
Jumbo what do you think of Boomba's? I have their oil cap and may end up with their throttle body for the Evo, but I've been holding back on deciding on a catch can.
I like yours, and it's similar to Boomba's, and you can rarely beat Boomba's pricing.
I really like the Boomba catch for the viewing windows. That takes the sight tube out of the equation. I like the simplicity too. Plus it's really pretty.
I'd prefer that it had some type of baffle or filter media like a screen or mesh though. This Boomba is the gravity type design. The gravity design works fine at NA, but with boost, it won't be as effective. It should still do it's job, but I just have no idea how well. Could remove 50% of the oil or maybe it's better than that. The hose fittings are small also - I worry about it being a pressure resrtiction with boost.
This is one reason some people go to the breather design - because no air from the rocker covers will return to the engine so no blow-by oil even has a chance to make it back. But if you go that route, you need big breathers to elimate pressure restrictions because you are no longer using a suction/vacuum line. You really want to remove all the oil, otherwise the breather filters will clog up really quickly. That's the reason behind the size and design of the T1 racing can I posted earlier in this thread. It uses three large breathers and eliminates pressure restrictions by using multiple hoses from EACH rocker cover.
Since the Boomba has one inlet and one outlet, I would expect to use two of these on your EVO - one off each rocker cover. That will get rid of the pressure build up you would have with two inlets and one outlet (since that's not an option on this can).
I expect to get my can in a week or two and I still need to find hoses. If anybody knows the place to go - post it up!
Quote:
Originally Posted by tchuck
I think the Jumbo Oil Catch Can Extraordinaire should include an air filter between the can and plenum.
Ok so the graco product you linked to is an oil catch can. You could use this all by itself and it's meant for compressed air so I bet it would function perfectly. In fact, it's probably a better option than anything we have posted yet in terms of how it performs. It's meant for industrial use, has filter options, flow capacity options and replaceable filter media. Didn't see a cost on it.
The can I ordered does have a filter, but it's wire mesh that is meant to give the oil something to hit & stick to so that it can then drain to the bottom. The next step would be to use baffles, which is what the ARC design uses. Some cans don't use a filter media or baffles - they use gravity and so they are not as effective. You could definitely take it a step further and use a real air filter meant for oil separation after the can, but that would be filtering twice, and you would have to make sure you are not causing any pressure restrictions with the second filter.
Here's the drawing of my custom application - Saikou sent this to me this morning to approve before fabrication. See the "screen & mesh assembly" in zone A2 of the dwg? That's the filter media.
Quote:
Originally Posted by tchuck
Also, in the interest of design overkill... A solenoid switch that opens the drain valve on the can (when the ignition is turned off?) to allow the captured oil to drain back into the system.
Yes, you can do this. And some people do. However...
The blow-by gasses in the rocker cover are not just oil, gasses also contain some of the fuel/air mixture and even a bit of exhaust, which contains carbon. I don't know how much of each of these "contaminants" are actually in the oil mixture collected, but I'd rather just eliminate it completely. If you do recirculate, it's probably not enough to foul up your engine oil too badly, especially if you change every 3000 miles. But if I'm going through the trouble to make my system run more cleanly, then completely removing the blow-by products is the way to go for me.
Quote:
Originally Posted by Frankiago
Jumbo what do you think of Boomba's? I have their oil cap and may end up with their throttle body for the Evo, but I've been holding back on deciding on a catch can.
I like yours, and it's similar to Boomba's, and you can rarely beat Boomba's pricing.
I really like the Boomba catch for the viewing windows. That takes the sight tube out of the equation. I like the simplicity too. Plus it's really pretty.
I'd prefer that it had some type of baffle or filter media like a screen or mesh though. This Boomba is the gravity type design. The gravity design works fine at NA, but with boost, it won't be as effective. It should still do it's job, but I just have no idea how well. Could remove 50% of the oil or maybe it's better than that. The hose fittings are small also - I worry about it being a pressure resrtiction with boost.
This is one reason some people go to the breather design - because no air from the rocker covers will return to the engine so no blow-by oil even has a chance to make it back. But if you go that route, you need big breathers to elimate pressure restrictions because you are no longer using a suction/vacuum line. You really want to remove all the oil, otherwise the breather filters will clog up really quickly. That's the reason behind the size and design of the T1 racing can I posted earlier in this thread. It uses three large breathers and eliminates pressure restrictions by using multiple hoses from EACH rocker cover.
Since the Boomba has one inlet and one outlet, I would expect to use two of these on your EVO - one off each rocker cover. That will get rid of the pressure build up you would have with two inlets and one outlet (since that's not an option on this can).
I expect to get my can in a week or two and I still need to find hoses. If anybody knows the place to go - post it up!
Attachments
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