Please post your catch can locations - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


General Miata Chat A place to talk about anything Miata

Reply
 
 
 
LinkBack Thread Tools
Old 08-03-2011, 04:43 PM   #1
Elite Member
Thread Starter
iTrader: (13)
 
Join Date: Dec 2009
Location: Fraser Valley, British Columbia
Posts: 2,502
Total Cats: 13
Default Please post your catch can locations

So with less and less space available in my engine bay with the Rotrex system and my GotPSI? intake manifold I am running out of places to mount a catch can. Can you please post up photos of where you mounted yours and what kind of can it is. I may weld something up but OTS is always easier.

Tnx
falcon is offline   Reply With Quote
Old 08-03-2011, 04:53 PM   #2
Elite Member
iTrader: (10)
 
Join Date: Oct 2008
Location: Seattle, Wa
Posts: 1,780
Total Cats: 30
Default

Disregard catch can, acquire slashcut tube in your exhaust.
Jeff_Ciesielski is offline   Reply With Quote
Old 08-03-2011, 05:33 PM   #3
Elite Member
Thread Starter
iTrader: (13)
 
Join Date: Dec 2009
Location: Fraser Valley, British Columbia
Posts: 2,502
Total Cats: 13
Default

I'm familiar with the slash cut idea. However I still want a catch can.
falcon is offline   Reply With Quote
Old 08-03-2011, 05:37 PM   #4
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,782
Total Cats: 119
Default

Quote:
Originally Posted by falcon View Post
I'm familiar with the slash cut idea. However I still want a catch can.
You're a ******* *****.

Here's my catch can bitch

https://www.importfabrication.com/im...%20Muffler.jpg


Supersiourioeus why you want catch can
Faeflora is offline   Reply With Quote
Old 08-03-2011, 05:39 PM   #5
Elite Member
iTrader: (1)
 
Join Date: May 2009
Location: Jacksonville, FL
Posts: 4,685
Total Cats: 216
Default

I have mixed feelings about the slashcut, I havent seen any evidence that its shape could even manage to cancel out the backpressure of the exhaust.
Although I do see the beauty in not having a filter to clog or having to empty it of oil and such.
Full_Tilt_Boogie is offline   Reply With Quote
Old 08-03-2011, 05:44 PM   #6
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,782
Total Cats: 119
Default

Aerodynamics. How do they work?
Faeflora is offline   Reply With Quote
Old 08-03-2011, 05:56 PM   #7
Elite Member
iTrader: (10)
 
Join Date: Oct 2008
Location: Seattle, Wa
Posts: 1,780
Total Cats: 30
Default

Quote:
Originally Posted by Full_Tilt_Boogie View Post
I have mixed feelings about the slashcut, I havent seen any evidence that its shape could even manage to cancel out the backpressure of the exhaust.
Although I do see the beauty in not having a filter to clog or having to empty it of oil and such.
Mosts tests I've seen done generally tend to register right about or slightly below atmo. So it is cancelling it it out, but not necessarily creating a vacuum to suck out the gasses.

But if you consider the fact that you get all the benefit of an atmospherically vented crankcase system, with none of the BS of a catch can, it is still win.
Jeff_Ciesielski is offline   Reply With Quote
Old 08-03-2011, 05:57 PM   #8
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,196
Total Cats: 2,583
Default

The world is my catch can lulz
18psi is offline   Reply With Quote
Old 08-03-2011, 06:01 PM   #9
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,782
Total Cats: 119
Default

Quote:
Originally Posted by 18psi View Post
The world is my catch can lulz
lol QFT
Faeflora is offline   Reply With Quote
Old 08-03-2011, 06:05 PM   #10
Elite Member
Thread Starter
iTrader: (13)
 
Join Date: Dec 2009
Location: Fraser Valley, British Columbia
Posts: 2,502
Total Cats: 13
Default

You guys are silly.

I plan to do a slash cut similar to Bob's with the incorporation of a catch can. I can't just route my valve cover directly to the exhaust and expect to pass any sort of tech inspection.

So... locations pls and tnx.
falcon is offline   Reply With Quote
Old 08-03-2011, 06:28 PM   #11
Elite AbsurdFlow Member
 
Laur3ns's Avatar
 
Join Date: Mar 2008
Location: Enschede, NL
Posts: 2,058
Total Cats: 11
Default

Mine is where the power steering reservoir used to be, pretty low. Got a pic somewhere.
Laur3ns is offline   Reply With Quote
Old 08-03-2011, 06:53 PM   #12
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,367
Total Cats: 1,331
Default

Quote:
Originally Posted by Jeff_Ciesielski View Post
Disregard catch can, acquire slashcut tube in your exhaust.
Slashcuts are specifically outlawed in the SCCA GCR.

My catch can is located where the washer fluid tank would normally sit, but I am actively changing that part of the car right now. Eventually I'll probably do a separator system with a sump drain and some sort of vacuum pump.
Savington is offline   Reply With Quote
Old 08-03-2011, 07:03 PM   #13
Elite Member
iTrader: (10)
 
Join Date: Oct 2008
Location: Seattle, Wa
Posts: 1,780
Total Cats: 30
Default

Quote:
Originally Posted by Savington View Post
Slashcuts are specifically outlawed in the SCCA GCR.
ORLY?

For environmental purposes, or because of the chance that some of it may dribble out the exhaust pipe?
Jeff_Ciesielski is offline   Reply With Quote
Old 08-03-2011, 07:21 PM   #14
Elite Member
Thread Starter
iTrader: (13)
 
Join Date: Dec 2009
Location: Fraser Valley, British Columbia
Posts: 2,502
Total Cats: 13
Default

Quote:
Originally Posted by Savington View Post
Slashcuts are specifically outlawed in the SCCA GCR.

My catch can is located where the washer fluid tank would normally sit, but I am actively changing that part of the car right now. Eventually I'll probably do a separator system with a sump drain and some sort of vacuum pump.
Yeah I'm playing around in that area right now. My FPR is mounted to the fuse box mount so it makes space quite restricted. I think if I move a few fuel lines around I should be able to mount it to the firewall with riv nuts,
falcon is offline   Reply With Quote
Old 08-04-2011, 03:31 AM   #15
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,367
Total Cats: 1,331
Default

Quote:
Originally Posted by Jeff_Ciesielski View Post
ORLY?

For environmental purposes, or because of the chance that some of it may dribble out the exhaust pipe?
Probably for fire hazard, honestly. If something in the motor lets go, there's a strong possibility of a lot of oil being dumped directly into the exhaust.
Savington is offline   Reply With Quote
Old 08-04-2011, 03:40 AM   #16
Elite Member
Thread Starter
iTrader: (13)
 
Join Date: Dec 2009
Location: Fraser Valley, British Columbia
Posts: 2,502
Total Cats: 13
Default

Sav... I'm considering blocking off the pass port and drilling out the drivers side to accept a larger AN fitting. How do you have yours wired? I've noticed a lot of oil in the can after track days (solid thick oil... not blowby I know the diff.) and want to help eliminate it. How are you getting around the oil out the pass port on left turn issues?
falcon is offline   Reply With Quote
Old 08-04-2011, 03:44 AM   #17
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,782
Total Cats: 119
Default

Quote:
Originally Posted by Savington View Post
Probably for fire hazard, honestly. If something in the motor lets go, there's a strong possibility of a lot of oil being dumped directly into the exhaust.
Well isn't the exhaust a good place for a lot of oil? So what if a gallon of oil burns in the exhaust? It won't blow up the car
Faeflora is offline   Reply With Quote
Old 08-04-2011, 03:51 AM   #18
Elite Member
Thread Starter
iTrader: (13)
 
Join Date: Dec 2009
Location: Fraser Valley, British Columbia
Posts: 2,502
Total Cats: 13
Default

Well when you're competitors go for on off track excursion after you gave them the ol' James Bond smoke screen, I'm sure they will be coming to give you a high five.
falcon is offline   Reply With Quote
Old 08-04-2011, 07:55 PM   #19
Elite Member
 
Join Date: Jul 2005
Location: Anacortes, WA
Posts: 2,479
Total Cats: 116
Default

Quote:
Originally Posted by Savington View Post
Probably for fire hazard, honestly. If something in the motor lets go, there's a strong possibility of a lot of oil being dumped directly into the exhaust.
9.3.38. OIL CATCH TANKS, FILTERS, AND BREATHERS
Oil holding tanks and engine breathers, whether directly or indirectly
ventilating the crankcase, and all transmission/transaxle breathers shall
be equipped with oil catch tanks. Minimum catch tank capacity shall be
one U.S. quart for the engine and transmission/transaxle. Oil holding tanks
and oil filters may be mounted in the driver/passenger compartment. A
metal bulkhead shall prevent exposure of the driver to oil spillage. Oil
catch tanks shall vent into the engine compartment or outside the driver’s
compartment. A crankcase vacuum breather that passes through the oil
catch tank(s) to exhaust systems or vacuum devices that connect directly
to exhaust systems is prohibited.

Did not read that until now. From experience I can say I don’t believe it is any more of a fire hazard if your engine lets go. It does make one hell of a smoke screen however as it significantly reduces the amount of oil that gets laid on the track. I guess to be SCCA legal Id just put a breather on the end of my slash cut hose and let it drip on the ground.

I’m also pretty sure most the breathers sold are not the minimum required one quart.

Bob
bbundy is offline   Reply With Quote
Old 08-04-2011, 11:13 PM   #20
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,367
Total Cats: 1,331
Default

Quote:
Originally Posted by falcon View Post
Sav... I'm considering blocking off the pass port and drilling out the drivers side to accept a larger AN fitting. How do you have yours wired? I've noticed a lot of oil in the can after track days (solid thick oil... not blowby I know the diff.) and want to help eliminate it. How are you getting around the oil out the pass port on left turn issues?
Both stock ports are capped. I have a single 1/2" NPT fitting in the TOP of the valve cover, with a 5/8" reinforced nylon hose to a catch can. With the stock barb hooked up I would pass a huge amount of clean oil to the catch can, with the big 1/2" NPT barb it passes virtually nothing. I have also drilled out the "small hole" as large as possible.
Savington is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Is my swirl pot design okay? FrankB Race Prep 10 10-02-2015 10:00 PM
Moroso Air Oil Separator Catch Can Aroundcorner Miata parts for sale/trade 2 10-01-2015 04:20 PM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 01:49 AM.