GC996

Skip, a couple of questions on testing an AOS for health.

Besides the obvious which is smoking, what other signs/tests are viable when determining if your AOS is failing?

1. Manometer readings above -5?
2. Engine begins to stall when removing the oil cap while the engine is running?
3. When engine is running its very difficult to remove the oil cap due to suction?
4. If you hear a muted but high pitched squeal coming from the engine compartment?

Are these viable tests and am I missing anything? Would anything be different for the Motorsports AOS versus the stock AOS?

Thanks man! Looks like I will be replacing my MS AOS with the UAOS w/ drainback shortly.

plpete84

I think increased oil consumption is also a signed of failed AOS.

Porschetech3

All the things mentioned can be caused by failing AOS, plus fuel trim issues of lean running and CEL fault codes for fuel trim, and Hydro-locked engines in worse case scenario's..

The manometer test IS the definitive test for AOS function. But be sure not to just test the static vacuum, but test from engine off to engine run, rev engine to watch for fluctuations. Engine off should be zero inh20 and the crank and it should not over-shoot the spec , but instantly come straight to spec without over-shooting. Ideally the inH2o should stay right at the spec under any engine running situation.

I have seen some failing that would go to 50 inh20 when first started but slowly come down to spec (5 inH20) in 10-15 seconds. It should NEVER go above spec.

The spec for factory AOS and MS AOS is about 5 inH20 depending on altitude above sea-level. The spec for UAOS is about 1 inH2o lower ..

BTW : just got a call from my Patent Attorney today to tell me the UAOS Patent has been approved !! After it was first denied by the USPTO sighting a Ford Global Patent and a Walker Industries Patent ( they were not even close, the Ford Global Patent was only for Turbocharged or Supercharged engines ect..lol) we put up an argument sighting the differences and the USPTO Examiner caved and allowed it .. Yes I'm thrilled, first time I have ever applied for a Patent !!

JohnCA58

Skip, finally installed the UAOS in the kids car, very easy set-up to install and looks great. soon as I get the L&N solution done and install the motor and trans, I need to do mine. LOL I've had that kit long enough.

GC996

Congrats on the patent! Gives you one less thing to worry about and one more accomplishment to appreciate!

Thanks for the info on AOS testing. Manometer said between -4.5 and -4.65 on Sunday, but I am going to replace the MS AOS with the UAOS with drainback. I want the durability of the UAOS and the extra qt of oil. No need to loose any sleep over a potential failure.

We have a driving instructor meeting this Saturday for the Chicago region. I will be sure to tell everyone about the UAOS and UIDS.

EVOMMM

Hey skip after Jake raby your “Da Man” knowledge is king sir

islaTurbine

Anyone got a manometer cap/tester setup they’re willing to rent out?

dporto

Who is this “Jack” Raby you always refer to?

De Jeeper

Pm sent

EVOMMM

From the spell check police Jake is spell checked

Porschetech3

Thanks guys, yes Jake and I both have spent our lives deep in ICE engines.

Jake started with VW and Porsche Type 4 engines and later moved to M96 engines and others.

I started in 1974 in FoMoCo Dealership and progressed to Ford Master and Top Trouble-Shooter in the South-East till 1994 , then went to Mitsubishi from '94 to 2004 , then to Porsche from 2004 till I retired as Porsche Gold Meister all the while was an Amateur Racer and Designer..

I almost went Pro in the 80's when I had some big sponsors like Ford MotorCraft and Custom Creations, but with a family growing and the security of a regular job, I didn't take the plunge..And to be honest, the pressure from Sponsors took some of the fun out of it and made it seem job like, I had to back off..Two highly physical and mentally challenging long hour jobs was too much.

I'm stoked about the UAOS Patent being allowed, since I am old and won't be around very much longer, I will leave the UAOS and UIDS to my Son ( Skip Jr.) to build with the help of George.

GC996

Skip, let's keep you around as long as possible to build on your legacy of two groundbreaking solutions and enjoy!

Porschetech3

Thanks Glenn, that's a good idea !!

Porschetech3

After a long arduous journey, the UAOS Patent # 11,326,489 will be Officially Issued on May 10, 2022

Sveach756

This is awesome, congratulations!