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Patriot Motorsports USA · 03-04-2026, 06:31 AM

It has been a while since I started this thread but I've been making progress to eliminate the oil being captured by the catch can due to high G-force right handers that tend to fill the driver's side valve cover up more than usual.

As I have noticed a trend for so many to add a Catch Can in various types and configurations, it always made me wonder not tap into the OEM system to keep it closed. My previous twin Evil Energy $40 CCs have been perfect for over a year of tracking the car with zero oil inside the supercharger or upon the bricks. However, at VIR I watched as Jeremy had to consistently drain his MightyMouse catch can of oil as it filled up after just a few sessions due to the high lateral Gs with the Hoosier slicks on all four corners.

If some of you were NOT aware... your plastic OEM catch can hidden in plain sight behind the water pump, has a staged 5/8" (-10) steel tube going directly into the oil pan with baffles as an automatic drain. Yes, this does require removing the water pump to remove the OEM plastic tank, but it will make for more room for activities!!

So far I have removed the plastic tank, Identified that the tube is indeed a Metric sized hose, so a -10 compression fitting is too small, but a -10AN Push-Lock fitting is perfect! I cut the hose right after forward tube heading up to the tank and pushed in the fitting, using two Oetiker Hose clamps and wrapped that up with a marine rated epoxy lined HD heat shrink for a perfect seal. This tube is not under pressure as it is just a drain, but I wanted to be sure there was no way for something transferring oil could leak near the soon-to-be-installed ARH headers.

I am awaiting a few more fittings from Amazon tomorrow to wrap this up, so I will leave this post with a couple photos and share more later. As for which catch can I feel has the best means of separating oil vapor... the Improved Racing part seems to do the best work with the greatest flexibility of mounting with the bracket that I made. Some of the tracks I run at are getting sticky at Tech Inspections due to fires created by poorly mounted CC systems where the oil could fall upon headers and start an engine fire, as I witnessed three last year at two different tracks!

03-04-2026, 06:31 AM	#7
Patriot Motorsports USA Drives: 2021 ZLE, C5 Z06 6.0L Procharged Join Date: Mar 2023 Location: South Carolina Posts: 578	*UPDATES COMING!! It has been a while since I started this thread but I've been making progress to eliminate the oil being captured by the catch can due to high G-force right handers that tend to fill the driver's side valve cover up more than usual. As I have noticed a trend for so many to add a Catch Can in various types and configurations, it always made me wonder not tap into the OEM system to keep it closed. My previous twin Evil Energy $40 CCs have been perfect for over a year of tracking the car with zero oil inside the supercharger or upon the bricks. However, at VIR I watched as Jeremy had to consistently drain his MightyMouse catch can of oil as it filled up after just a few sessions due to the high lateral Gs with the Hoosier slicks on all four corners. If some of you were NOT aware... your plastic OEM catch can hidden in plain sight behind the water pump, has a staged 5/8" (-10) steel tube going directly into the oil pan with baffles as an automatic drain. Yes, this does require removing the water pump to remove the OEM plastic tank, but it will make for more room for activities!! So far I have removed the plastic tank, Identified that the tube is indeed a Metric sized hose, so a -10 compression fitting is too small, but a -10AN Push-Lock fitting is perfect! I cut the hose right after forward tube heading up to the tank and pushed in the fitting, using two Oetiker Hose clamps and wrapped that up with a marine rated epoxy lined HD heat shrink for a perfect seal. This tube is not under pressure as it is just a drain, but I wanted to be sure there was no way for something transferring oil could leak near the soon-to-be-installed ARH headers. I am awaiting a few more fittings from Amazon tomorrow to wrap this up, so I will leave this post with a couple photos and share more later. As for which catch can I feel has the best means of separating oil vapor... the Improved Racing part seems to do the best work with the greatest flexibility of mounting with the bracket that I made. Some of the tracks I run at are getting sticky at Tech Inspections due to fires created by poorly mounted CC systems where the oil could fall upon headers and start an engine fire, as I witnessed three last year at two different tracks! Attached Images