Oil catch can setup on my race car.
#76
Radioactive Rotary Rocket
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This might be a stupid question, but is a recirculating catch can useful? I know in piston engines they are popular because they prevent pressure building up behind the pistons. But would that be beneficial to the rotary or is it best to just vent to atmosphere?
#79
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This might be a stupid question, but is a recirculating catch can useful? I know in piston engines they are popular because they prevent pressure building up behind the pistons. But would that be beneficial to the rotary or is it best to just vent to atmosphere?
thewird
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#82
quick update to my thread based on question someone asked on the level viewer thing I added to my catch can. I took that off the previous can i had, but here is where you can get the parts to make/add one:
Check this mcmaster page:
http://www.mcmaster.com/#catalog/117/172
Maybe somthing like product#51055K48 for the elbow fittings, then just some clear plastic 1/4 inch tube to connect them (plastic that can handle oil) like mcmaster part #53945K111
Check this mcmaster page:
http://www.mcmaster.com/#catalog/117/172
Maybe somthing like product#51055K48 for the elbow fittings, then just some clear plastic 1/4 inch tube to connect them (plastic that can handle oil) like mcmaster part #53945K111
#83
Dirty
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As always, super helpful information! I tried looking through the McMaster website before but wasn't sure which part would work. Luckily, you just spelled it out for me! Now I have everything (minus the bracket to mount the can itself) and can finally put this thing together. I'll post up my own results when I'm done.
Thanks again Damian!
Thanks again Damian!
#92
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Anyone tried this catch can? Universal Dual Catch Can Then I could see how much comes from the rear and how much from the filler. Also I like the media in there that allows the fuel to evaporate.
Blow by has been a big problem that I'm trying to solve. Apparently a lot of it is because the Pineapple oil pan has bad baffling (even with my trap doors around the pickup).
#93
Goodfalla Engine Complete
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So the oil can transfer between the rear turbo drain and the filler neck? Hadn't thought of trying that.
Anyone tried this catch can? Universal Dual Catch Can Then I could see how much comes from the rear and how much from the filler. Also I like the media in there that allows the fuel to evaporate.
Blow by has been a big problem that I'm trying to solve. Apparently a lot of it is because the Pineapple oil pan has bad baffling (even with my trap doors around the pickup).
Anyone tried this catch can? Universal Dual Catch Can Then I could see how much comes from the rear and how much from the filler. Also I like the media in there that allows the fuel to evaporate.
Blow by has been a big problem that I'm trying to solve. Apparently a lot of it is because the Pineapple oil pan has bad baffling (even with my trap doors around the pickup).
#94
Here is the catch setup I just made,
Its using the stock pcv points and valve, mainly for simplicity I have a spare 9mm vacuum only port on my turbo inlet to swap to if I decide to later.
I purchased a cheap square ebay catch can and some fuel safe foam for baffling.
Found a suitably sized piece of hose that screwed into the left over thread on the catch can inlet, and sealed it with rtv, not really necessary.
I then cut the foam to size, and punched a whole through it with the help of a drill bit and a saw blade.
I had a huge void from removing ac and powersteering that was perfect spot for my can, soo bashed out a simple bracket while the rtv was drying
Didn't like the blue hose, was going to use some oem black rubber hose but couldn't find enough so cheap mans braided hose FTW!
And finished product, cars not running to see how well its working yet thou.
I deliberately mounted it facing backwards soo it was easy to see the level gauge and get to the drain plug but I think it came up super neat
Its using the stock pcv points and valve, mainly for simplicity I have a spare 9mm vacuum only port on my turbo inlet to swap to if I decide to later.
I purchased a cheap square ebay catch can and some fuel safe foam for baffling.
Found a suitably sized piece of hose that screwed into the left over thread on the catch can inlet, and sealed it with rtv, not really necessary.
I then cut the foam to size, and punched a whole through it with the help of a drill bit and a saw blade.
I had a huge void from removing ac and powersteering that was perfect spot for my can, soo bashed out a simple bracket while the rtv was drying
Didn't like the blue hose, was going to use some oem black rubber hose but couldn't find enough so cheap mans braided hose FTW!
And finished product, cars not running to see how well its working yet thou.
I deliberately mounted it facing backwards soo it was easy to see the level gauge and get to the drain plug but I think it came up super neat
#95
Too Many Projects
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I see one potential problem. If that hose goes deep enough into the catch can so that the end of it is completely submerged in oil, then there will be no way for pressure to vent out easily. It will have to push its way past the oil first. I would make sure the hose can't go past the top of the sight gauge or at least make a mark on the sight gauge showing where the hose ends.
#98
The hose only goes down about half way into the can, and is the oil input side of things ie from the crank case.
Its my understanding that this will work best when there is oil over the hose that way the oil will also act as a filter as the blowby and air has to go through the oil before it can be sucked back into the intake. it also prevents the blowby skipping the can altogether as it could possibly do especially with the baffeling I added
I also worried about the ill effects having a non vented can that was only ever subject to vacuum possibly pulling straight oil up from the sump. but the standard PCV allows some venting and should maintain a low lever vacuum.
Much like if you were to plumb it staright to the pre turbo vacuum point.
I preferred to use the standard pcv point as Im sure some blowby will still get through and then it wont go through the turbo and intercooler just the intake manifold.
Its my understanding that this will work best when there is oil over the hose that way the oil will also act as a filter as the blowby and air has to go through the oil before it can be sucked back into the intake. it also prevents the blowby skipping the can altogether as it could possibly do especially with the baffeling I added
I also worried about the ill effects having a non vented can that was only ever subject to vacuum possibly pulling straight oil up from the sump. but the standard PCV allows some venting and should maintain a low lever vacuum.
Much like if you were to plumb it staright to the pre turbo vacuum point.
I preferred to use the standard pcv point as Im sure some blowby will still get through and then it wont go through the turbo and intercooler just the intake manifold.
#100
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I've used a ton of set ups, and there are a couple keys:
1. Enough capacity... I'd go for at least 1qt. if it's a track car on sticky tires that may potentially run with a completely full oil pan.
2. Being able to see how much is in the can
3. A large enough feed line and vent to relieve pressure (-10 is preferred)
4. Easy draining.
That last one is why those GReddy style cans are a pain in the ***. Once it's full you need to take it apart. I went (finally) with a 1qt. Jaz can. It's large enough, has a -10 inlet, is "natural" plastic so you can see how much is in there without taking it apart or any complicated sight tubing, and has a drain petcock, so you can get the stuff out easily. I use their radiator overflow bottle too, to make room for brake ducts.
1. Enough capacity... I'd go for at least 1qt. if it's a track car on sticky tires that may potentially run with a completely full oil pan.
2. Being able to see how much is in the can
3. A large enough feed line and vent to relieve pressure (-10 is preferred)
4. Easy draining.
That last one is why those GReddy style cans are a pain in the ***. Once it's full you need to take it apart. I went (finally) with a 1qt. Jaz can. It's large enough, has a -10 inlet, is "natural" plastic so you can see how much is in there without taking it apart or any complicated sight tubing, and has a drain petcock, so you can get the stuff out easily. I use their radiator overflow bottle too, to make room for brake ducts.