Porschetech3

@allgood read the description in the link Charles provided on the Swepco additive, it mentions the LN MoS2

robroy72

@justinbAUS have you had your indie check the cam deviation to see if its within limits?

justinbAUS

Hi RobRoy,

No. the car is still in bits waiting for UAOS.

Can a cam deviation issue cause the oil to be sucked up into the AOS? or would it create too much crank case pressure?

De Jeeper

Neither, its just good to know and check the values occasionally.

justinbAUS

The engine recently got new chains / guides etc.. so they should be good for a long time ?

De Jeeper

Yea probably wouldnt check then until another 50k miles and then every 15k.

robroy72

It wouldn't hurt to check it to make sure everything was done properly since it was a previous owner.

justinbAUS

Sir - you were on the money.

I didn't install a UAOS as the cost of shipping etc made is a $3500 spend. So I decided to replace the AOS with a Porsche genuine and I fed back to the Indie (right at the beginning) about checking the scavenge pump.

After they installed the AOS (and completedly a leakdown test (less then 10% loss across all cylinders) they pulled the pumps. Bank one (1-3) was 180 out of phase!!!!!

I've just picked up the car and it is humming along.

Porschetech3

@justinbAUS Glad you got your car sorted !!!

That is the 3rd M96 I have saved from catastrophic failure on this forum for this paticulal issue just recently ( <<<< patting self on the back )

The UAOS System was not really meant for the "good enough crowd",,( we got along without it for almost 2 decades), it took almost 2 decades to get tired all the engine failures from hydrolock, cracked cylinders bent rods, and all the labor to replace the AOS every few years, then sometimes even the OEM Genuine Porsche one fails right out of the box......Let alone the recent development to UAOS to increase durability in high g turns..And in the long run the labor saved pays for itself..

I am curious of the cost in Australia of $3500 to install the UAOS. Would you mind breaking that down for me? I'm sure others in other Countries would be interested as well..I know the Import Rules are different in every Country, with the US import Rules the most lenient, but what all does that $3500 include ?

justinbAUS

Private message sent - I don't like mentioning company names publically. Feel free to ask more questions. I would like to install the UAOS myself but I just don't have anywhere I can do it in little stages / take my time. (no garage... my car lives on the street)

Porschetech3

Thanks for the info !! ....Too bad the situation of the excessive costs kept you from upgrading to the UAOS System..

SealG996

I deal with a very different Indy in Australia. They had a 996 preped for an event and as you say the factory new AOS failed - as it drove out of the shop. After doing a whole LN 3.8 Nickies deluxe bottom end. They fully supported the UAOS, given the extensive build to support. .

justinbAUS

The guys doing the work on my car to get me where I am basically refuses to install 'customer' parts. I suspect they might lighten up once I build rapport... but plan to chat to your guy

Porschetech3

The install of the AOS or UAOS system is not as hard or time consuming as some people have made it out to be...except on tiptronic cars...

Before I retired from the Porsche Dealership I never charged more than 3 hours for an AOS replacement on a manual car...There is no "book time" on AOS replacement ( Porsche never dreamed it would be nessesary), so shops just charge what they "feel like" for the job...I have seen up to 10 hours charged or quoted to replace the AOS ..but I suggest that 4 hours is fair if they are competed. Most 996 owners will smartly combine the IMSB/RMS/AOS job to keep labor cost down. Labor seems to be the most expensive part of any 996 engine repair these days..

I use Kris Murphy as a routine example all the time. He is NOT a professional , just a mechanical inclined individual with good skills and has done 5-6 UAOS installs on 996.1 cars and can install the UAOS Track Version in less than 3 hours.. He has done so on all his friends cars that frequent the local Track .. All the 996 cars at this Northeastern Track use the UAOS Tack Version..

I know why and understand some shops refuse to install "customer parts" because they do a "mark-up" on all parts used to help with cost of doing business...The parts they use they are normally awarded a discount to them, then resell at a small profit along with the labor charge...

Anyway if you decide to tackle this job in the future, I'm sure you can get plenty of support .....

justinbAUS

Hi Everyone,

I'm just circling back to this post that I started. So I’ve completed another 500km and I’ve just did a use oil analysis (UOA) after 1500km to see where the engine is at since it is all new to me.

Since the bank one scavenger pump was installed upsidedown I'm wondering what sort of affect that would have had on the oil. the UOA has show the oil's has oxidised (within limits) but higher than I would have expected given the short distance. So I'm wondering if the upside-down scanvenger pump may have aerated the oil increasing the oxidiation value?

I did attempt to ask the well known BITOG forum but I'm finding the user base there are more about post count than contribution.

Any thoughts appreicated