Another 996 Smoking on Track: Seeking Pre-Event Advice
07-01-2021, 06:07 PM
#16
Rennlist Member
To everyone to make it clear, my Oem aos failed in 2006. The only choice available was to go with the Motorsport AOS. The UAOS didn't exist at that time.
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Porschetech3 (07-01-2021)
07-01-2021, 08:57 PM
#17
I can validate that lowering the oil level to about half on the dip stick or electronic gauge resolved my issues with smoking on the track. For once a simple fix for a potentially scary problem. I also use DT40 and haven’t had any issues. I think it’s probably fine for the track.
Last edited by Slopeslider; 07-01-2021 at 08:59 PM.
07-01-2021, 10:58 PM
#18
Rennlist Member
The conditions on 996 that cause the smoking are hard braking/long right hand turns/ followed by full throttle.
The " Porsche Factory Fix" for this was lowered oil level (1/2 qt on 996.1 and on mid 2002 up, a shorter dipstick (by 1/2 qt) , the problem is increased when the blow-by increases.
The original intention of the UAOS was ease of replacement of the diaphragm ( done in 10 min) along with a warning system consisting of a Microprocessor Controlled Infra-red Sensor placed in the Accumulator ( a secondary air/oil separator) that will warn the driver of system failure. The Accumulator is schedualed to be drained at 3k miles during regular oil changes on cars driven normally in good health ..
The high mileage/Extreme Track Duty Auto Drain was recently added as I am always improving the product, On Track cars with more blow-by than normal (Zbomb) it allows more drains (2) to the accumulated oil that before only had one factory size drain to the sump. And the reason I am not fond of the Motorsport AOS, it holds/removes more oil from the sump((@ 1.5 liters), and can only drain so fast given on one factory sized drain.
The car Tom mentioned above I think is Kris's car, who has had issues for years . He replaced the AOS 3-4 times thinking it was the issue,before he put the UAOS on and he even fills up the UAOS Accumulator really quick and sets off the warning, He just got the high mileage/Extreme Track Duty Auto Drain last week.
The " Porsche Factory Fix" for this was lowered oil level (1/2 qt on 996.1 and on mid 2002 up, a shorter dipstick (by 1/2 qt) , the problem is increased when the blow-by increases.
The original intention of the UAOS was ease of replacement of the diaphragm ( done in 10 min) along with a warning system consisting of a Microprocessor Controlled Infra-red Sensor placed in the Accumulator ( a secondary air/oil separator) that will warn the driver of system failure. The Accumulator is schedualed to be drained at 3k miles during regular oil changes on cars driven normally in good health ..
The high mileage/Extreme Track Duty Auto Drain was recently added as I am always improving the product, On Track cars with more blow-by than normal (Zbomb) it allows more drains (2) to the accumulated oil that before only had one factory size drain to the sump. And the reason I am not fond of the Motorsport AOS, it holds/removes more oil from the sump((@ 1.5 liters), and can only drain so fast given on one factory sized drain.
The car Tom mentioned above I think is Kris's car, who has had issues for years . He replaced the AOS 3-4 times thinking it was the issue,before he put the UAOS on and he even fills up the UAOS Accumulator really quick and sets off the warning, He just got the high mileage/Extreme Track Duty Auto Drain last week.
The following users liked this post:
Porschetech3 (07-01-2021)