Drivetrain BSH catch can and dual boost port install
It appears that they are reversed.
In the instructions BSH shows the can as you look at it straight on, with the two ports facing you, which would be reversed in this photo looking at the back of the can.
From the instructions:
8) Install hoses
Run one hose from the Valve cover to the Left
port of the CC and the second hose from the
CC to the intake pipe. The new CC is port
specific.
Last edited by john171; Nov 23, 2012 at 02:36 PM.
This may be a stupid question
I have been using my BSH OCC for 2 years without fail (It really collects alot during the winter). This summer I didn't drain it as it doesn't usually collect very much. Yesterday, I checked the dipstick and I have about an inch of sludge showing but when I try to drain the can, nothing comes out. I think the sludge at the bottom has solidified. I've tried to drain it when it was warmed from the engine with no luck. I can take the can out and give it a good scrub, but I'm lazy and just want to flush it out. Any suggestions to what would dissolve the gack at the bottom. Gasoline, seafoam?
Max
Max
Got a question, do you have to have the hose connected to get a boost reading on the the boost port or can you still block it off? I have it blocked off and am not getting a reading.
- Erik
Yeah that is what I thought
Third (3rd) drain on my BSH oil catch can:

Car info: 2009 R55 JCW
Current Date: 11/16/2012
Current Mileage: 13913 miles
Miles since Last Emptied: 3356 miles
Notes:
- summer driving produced very little water condensation, but provided approximately the same amount of oil residue.
- This time, the oil has a distinct gasoline smell, however is not extremely flammable.
- The semi-clear fluid is discolored (oxidized rust) water is on the bottom
- the tan separating layer is the result of a chemical reaction involving the oil vapor with water condensation
- the dark brown translucent fluid on top is the oil / gas mixture.
- Engine oil in crankcase was up to level at all times; no oil consumption to report.
Observation: very dry, hot and smoky summer in Colorado due to wildfires; car was driven on longer trips along with 20+ min daily grind to the office.
Thoughts: nothing new to report; steadily watching collection of fluids.
- Erik

Car info: 2009 R55 JCW
Current Date: 11/16/2012
Current Mileage: 13913 miles
Miles since Last Emptied: 3356 miles
Notes:
- summer driving produced very little water condensation, but provided approximately the same amount of oil residue.
- This time, the oil has a distinct gasoline smell, however is not extremely flammable.
- The semi-clear fluid is discolored (oxidized rust) water is on the bottom
- the tan separating layer is the result of a chemical reaction involving the oil vapor with water condensation
- the dark brown translucent fluid on top is the oil / gas mixture.
- Engine oil in crankcase was up to level at all times; no oil consumption to report.
Observation: very dry, hot and smoky summer in Colorado due to wildfires; car was driven on longer trips along with 20+ min daily grind to the office.
Thoughts: nothing new to report; steadily watching collection of fluids.
- Erik
I need some help understanding the BSH can and blocking off the pass side pcv port. I ordered the BSH can but decided I did not need to spend the money on the dual boost tap (block off) and bought the caps from a member here at NAM. The caps come as a pair and I assumed that I would only need one for the pass. side hose block off and that the other end of the hose went to the drivers side where I would install the hose to the cc. After reading some other threads I'm beginning to think that is not the case. I have not even looked at where the other end of the pcv hose really goes. So do I need to remove the hose and use both caps? Is this the correct way to plumb the cc? Will I be harming anything using the caps this way? Any input would be greatly appreciated.
You must install both caps! The other end of the PVC hose from the passenger side of the head cover goes to the throttle body. You would have a huge vacuum leak and the car would not start, if you didn't block that off also.
Dave
Dave
Thank you Dave. Remove hose and use both caps. I'm sure I would have seen that it went to the TB, as mentioned before I havent looked at it yet, still waiting for the caps. This will accomplish what the dual boost port block off does, correct?
So i'm trying to understand all this CC business with the optional boost tap and the caps if i don't purchase a boost tap. I've tried reading through all the posts and my head is spinning.
Can someone tell me if i understand all of this correctly?
-The BSH OCC comes with everything i need to install including the caps, correct? Do i need to buy the boost tap at all? I don't plan on ever running a boost gauge.
Basically, if i buy this kit (http://www.bshspeedshop.com/bshstore...atch-Can.html#) do i need to buy anything else?
Thanks.
Can someone tell me if i understand all of this correctly?
-The BSH OCC comes with everything i need to install including the caps, correct? Do i need to buy the boost tap at all? I don't plan on ever running a boost gauge.
Basically, if i buy this kit (http://www.bshspeedshop.com/bshstore...atch-Can.html#) do i need to buy anything else?
Thanks.
The BSH Oil Catch Can does not come with the dual boost port or block off caps. You just get an oil catch can.
However, you must block the passenger side PVC line for the oil catch can to do any good. That is the line that goes directly to the throttle body and the intake valves.
How you block that line is your choice, you can buy two block off plugs for an Audi or a Peugeot and remove the hose completely, or you can put the BSH dual boost port, with the plug installed, between the valve cover and the PVC hose and leave the hose in place.
I got the Dual Boost Tap, because I didn't know where to get the plugs. I ended up installing a boost/vacuum gage, so it worked out alright.
Dave
However, you must block the passenger side PVC line for the oil catch can to do any good. That is the line that goes directly to the throttle body and the intake valves.
How you block that line is your choice, you can buy two block off plugs for an Audi or a Peugeot and remove the hose completely, or you can put the BSH dual boost port, with the plug installed, between the valve cover and the PVC hose and leave the hose in place.
I got the Dual Boost Tap, because I didn't know where to get the plugs. I ended up installing a boost/vacuum gage, so it worked out alright.
Dave
Thank you for clearing that up. That's the dilemma as i don't know here to buy the two block off plugs and which ones would work (if there are different sizes). I don't plan on buying a boos gauge, but it's nice to know i have the option to if i change my mind.
I wonder if these would work better. Read the whole think and see from the video this could probably be modified to work on a MINI as they have a universal to make your own.
http://jlttruecoldair.com/ZenCart/in...kte1u81uvogq53
http://jlttruecoldair.com/ZenCart/in...kte1u81uvogq53
First off at the very least you'll need to shop at an auto parts store, the lumber/garden/hardware variety shops will not carry what you need, even then you most likely will end up with heater hose, which while it will work won't last as long when exposed to the oil and high temps. My recommendation is to get it from JEGS on line they sell exactly what you need, or if you are so inclined order from the OCC manufacturer. Either way whichever size you got with the can is what you want.
God luck!
God luck!
Yeah, that PCV hose on the back of the head cover goes directly to the intake manifold (on pre 2011 MINIs). The dual boost tap has a plug in it that blocks off the PCV hose but allows you to tap into the pressure/vacuum of the manifold so you can hook up a boost/ vacuum gauge. The plug in the dual boost tap forces the crankcase gasses to the other PCV line, through the oil catch can and into the turbocharger suction.
Dave
Dave
Looking for some long term updates as this thread is quite old and the catch cans must have some good miles on them now.
- How has the BSH parts held up over time?
- Have you had to take your car in for walnut blasting? If so, how many miles are on your car, and when did you install the catch can?
- Have you looked at your intake valves? Is there still buildup?
Many thanks.
- How has the BSH parts held up over time?
- Have you had to take your car in for walnut blasting? If so, how many miles are on your car, and when did you install the catch can?
- Have you looked at your intake valves? Is there still buildup?
Many thanks.





