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LIke I said, a drop of oil every few seconds is all it takes to make a lot of smoke on full throttle when that oil hits a red hot exhaust....
This would make a good Technical PSA Thread.......It's happened many times before and will in the future.. And many will go down the wrong Rabbit Hole......lol
Originally Posted by Ben8jam
Well, funnily enough, I went out yesterday and checked and for the first time ever, there is a single drop of oil on the driver's side coming from plugs 'area'. I had cleaned the area behind the heat shield pretty well when i first got the car, so will check behind it again this weekend. Guess new tubes are in order... and investigate the valve cover more. Will check the exhaust too to confirm spotting. Thanks for your quick insights!
I did the crossover coolant hose delete (the one my indy inadvertently added when installing the UAOS). Anything I should confirm before testing?
I clamped down the little rubber caps on the metal host outlet on the block and the little plastic connector from pipe under reservoir. Coolant pressure won't pop those off right?
Hi all, I am just installing the UAOS on my 40th AE. I am pretty much following @plpete84 manual and what confuses me is the wiring going to the changeover valve that plpete84 has on his pic below. It looks like some kind of wiring extension which would be useful to have but my UAOS kit ordered here in Europe came without it. It makes wonder if miss this extension or not. Thanks and warm greetings from the Czech Republic to everyone!
Last edited by 40AE_CZE; Apr 22, 2025 at 11:36 AM.
I was just at my indy (Eurosport) last week and one of the techs said take a look at this. He held up the RACE version of the UAOS which is not emissions compliant for the street, but instead is designed only for the track.
Skip has talked about it breifly here on Rennlist, but i had never seen it. Hopefully Skip will share more info about it. Pretty damn impressive.
Good to see the recognition and demand growing with Porsche Indies that support the PCA club racing, track and street only community about your three (3) UAOS solutions. You have three flavors depending on what you are looking for.
Wow...thanks for posting. Is the street legal track drain version able to be retro fitted? I only have a couple hundred miles on mine, but the car is registered in MT now, so i could technically do anything to the engine 😂
Curious either way how the track only version works/differs.
Wow...thanks for posting. Is the street legal track drain version able to be retro fitted? I only have a couple hundred miles on mine, but the car is registered in MT now, so i could technically do anything to the engine 😂
Curious either way how the track only version works/differs.
You will get an answer from the master on this, but I am pretty sure the conversion only involves getting the track drain oil filler and connecting to your UAOS.
Another UAOS that has made it to Europe @Porschetech3 . Just finished the installation of the UAOS on my 996 40AE. Some minor modifications that were needed due to X51 differences:
- provided bolts to fit UAOS don't fit because X51 has an aluminium intake, therefore two metric 6x20 bolts are needed instead
- I think the X51 intake also has mounting threads for the accumulator further to the left compared to the standard intake therefore I had to replace the hose between the accumulator and that round thing (sorry, dunno the right name of it) for approx. 1 inch longer one. Hence why the silicon hose on my pic below.
- one connector to the coolant level sensor did not fit - I had to trim small piece of from the inside to make it fit.
Overall an impressive piece of kit and thank you for it, Skip!
Last edited by 40AE_CZE; Apr 26, 2025 at 04:39 PM.
You will get an answer from the master on this, but I am pretty sure the conversion only involves getting the track drain oil filler and connecting to your UAOS.
I have the track drain version. I think there is yet another, non-street emission compliant UAOS, which that photo is of. Looking at details on that.
Anyone ever drained water from the catch can? I pulled the drain today and three tablespoons of water came out, to my surprise. I have never had anything drain from it before in 13k miles.
I figure it’s condensation from the oil as it was brown. Didn’t smell like coolant. I daily drive mine 40 miles round trip to work.
If I had the track drain, that water would have been sent back to the sump.
Anyone ever drained water from the catch can? I pulled the drain today and three tablespoons of water came out, to my surprise. I have never had anything drain from it before in 13k miles.
I figure it’s condensation from the oil as it was brown. Didn’t smell like coolant. I daily drive mine 40 miles round trip to work.
If I had the track drain, that water would have been sent back to the sump.
For every gallon of gas burned a gallon of water is produced....This is normal as water is a normal by-product of the combustion process .. Most if this water is just blown out the tail-pipe but a small amount gets past the rings and into the oil. This water is vaportized and goes through the Crankcase Ventilation System and a small amount can condensed in the Accumulator ...This is not a problem, just normal circumstance..Even if those three tablespoons were to slowly be returned to the oil they would be re-vaporized again and be sent back through the Crankcase Ventaltion System to be reburned in the engine eventually ....Water is constantly being produced and vaporized in the engine..this is just a normal part of the Combustion Process ...
1 : The UAOS System is meant to be a LIfetime Replacement for the frail OEM AOS..
It is 4x more efficient than the OEM or Motorsport AOS
It is 2x more robust than the OEM or Motorsport AOS
The AOS Vortex chamber never has to be replaced
The Flow Regulator can be replaced in minutes if ever necessary
It has an Optical Infra-Red Microprocessor Controlled Warning System if ever needed
It is meant for those street driven cars who want an Ultimate Upgraded System that will never need another replacement ..
2 : Optional Track Drain KIt
The Optional Track Drain KIt provides an additional drain back to the Sump for dual purpose Street/Track cars..
It is retrofitable to any UAOS System and Includes a new oil fill pipe and hose with a Banjo Fitting and Banjo Bolt that screws in place of the Drain PLug ...
It is still Emissions Compliant , but Improves the drain back 2x for cars that are Tracked /or driven aggressively and need a higher oil level to combat oil starvation..
3:: Race/Track Only Option
This is NOT emission Legal and is NOT recommended for Street Cars...
It can be retrofitted to any UAOS System but is not recommend for street cars because it eliminates the recirculation of the Blow-by gases to the engine...The recirculation of the Blow-by gases actually helps to keep the oil cleaner for longer periods for Street Driven Cars...On Race Only cars the oil is changed after every Race or Track Weekend so is not a problem. Because the recirculation puts the Crankcase under a slight vacuum which helps keep the contaminates from the oil ...
Also when the recirculation is eliminated the engine will run slightly richer during cruise, this is not a problem for Track Only/Race Only Cars as they don't spend any time at cruise. They spend most of the time at full throttle ...But this would be an issue for a Street Driven car to run slightly richer at cruise and effect the fuel trims ..
The Race/Track Only Option includes an additional Aluminum Polished Accumulator with a small K&N air filter.. Custom Connection Hose and Intake block-off Norma V2Quick Connector ......
This Option provides the highest degree oil level and of protection for short periods only for a Race Car or a Track Car....
Last edited by Porschetech3; Apr 26, 2025 at 09:28 PM.
I hope everyone opts for the Track Drain kit. The convenience of not needing to manually drain the accumulator saves you time and effort. I can’t think of a reason why you’d want to go without it.
Yeah, I am pretty damn impressed with the UAOS w/Trackdrain because its able to process 12.5 qts of DI50 thru my 3.6. No smoking, no hiccups.
Just had 2 track days back to back Thursday and Friday and the oil pressure was very stable between 3.5-5 bar. The extra 4 qts (UAOST +2qt sump) over 8.5 qts oem full makes a huge difference. But the key ingredient is the UAOS T, because it can safely process all of the extra oil. Neither the oem AOS nor the Porsche Motorsports AOS can handle the extra oil.