996 Education please
#16
Race Director
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AOS is the air/oil separator. It's the Porsche equivalent of a $2 PCV valve - but much larger, more expensive, and difficult to replace.
I wholeheartedly disagree with buying a car that has already had some kind of IMS retrofit. Buy the cleanest, least molested (i.e. as close to bone stock as possible) and do with it what you want. There are two reasons to do the IMS retrofit: preventive maintenance and in response to a failing or failed bearing - and sellers don't have any problem claiming it was done as PM regardless of whether or not it's true.
I wholeheartedly disagree with buying a car that has already had some kind of IMS retrofit. Buy the cleanest, least molested (i.e. as close to bone stock as possible) and do with it what you want. There are two reasons to do the IMS retrofit: preventive maintenance and in response to a failing or failed bearing - and sellers don't have any problem claiming it was done as PM regardless of whether or not it's true.
#17
Drifting
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http://www.autofarm.co.uk/pdf/Total911_July06.pdf
http://www.pistonheads.com/features/...ng-guide/30277
http://www.ferdinandmagazine.com/por...1-buyers-guide
http://www.autocar.co.uk/car-news/mo...d-buyers-guide
http://www.revolution-porsche.co.uk/...rs-guide-look/
https://rennlist.com/forums/996-foru...ing-guide.html
http://www.pistonheads.com/features/...ng-guide/30277
http://www.ferdinandmagazine.com/por...1-buyers-guide
http://www.autocar.co.uk/car-news/mo...d-buyers-guide
http://www.revolution-porsche.co.uk/...rs-guide-look/
https://rennlist.com/forums/996-foru...ing-guide.html
#19
Race Car
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There are a lot of different opinions on these engines and a lot of people that know way more than I do. But Flat Six Innovations recommended to me to change the water pump and AOS every 3 years, regardless of mileage and my retrofit IMS every 5 years or 70k miles. There are plenty of people that don't agree with this but none of them seem to have anywhere near the experience that FSI has. So while I'm learning something, I try and figure out who the smartest person I can find is (and they are brilliant) and then just do what they tell me until proven otherwise.
#20
USMarine
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#21
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If the swap wasn't done by a shop the buyer can trust then you just don't know the state the motor is in and going in and proactively changing it anyway might not make it clear.
I would amend Schnelly's view to include retrofits done by certified installers as being OK too.
#22
USMarine
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Ahhhhh, IC... those are indeed reasonable arguments, I have never considered.
OK thanks for the heads-up view there. Something to consider and look deeper into when conducting a PM for both myself and on behalf of others.
OK thanks for the heads-up view there. Something to consider and look deeper into when conducting a PM for both myself and on behalf of others.
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There have been cases of people finding out their bearing was failing, slapping in a retrofit, and then pawning it off on a sucker (via CarMax is the most popular option).
If the swap wasn't done by a shop the buyer can trust then you just don't know the state the motor is in and going in and proactively changing it anyway might not make it clear.
I would amend Schnelly's view to include retrofits done by certified installers as being OK too.
If the swap wasn't done by a shop the buyer can trust then you just don't know the state the motor is in and going in and proactively changing it anyway might not make it clear.
I would amend Schnelly's view to include retrofits done by certified installers as being OK too.
#23
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In fact there was a recent thread of a bearing failure where the new owner had a receipt for a bearing that was never installed. It was not a case of an intentional screwing, but highlights the unknowns of someone else doing the swap.
#24
USMarine
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#25
Pro
#26
USMarine
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Read this www.imsretrofit.com
I actually read that on LN's site years ago before I had my IMS replaced... not that I needed it but I had a thrust bearing liberate itself and when I replaced my engine I had the IMS replaced (by a qualified indy). The IMS I removed was in perfect condition, but I chose to have LN's put in anyway, in addition to Jakes IMS Guardian.
I should mention that my 996 frame has 140k on the clock and the replacement M96 powerplant a bit less than 50K
#27
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Just fyi, that site has been updated recently.
Thanks for the link share...
I actually read that on LN's site years ago before I had my IMS replaced... not that I needed it but I had a thrust bearing liberate itself and when I replaced my engine I had the IMS replaced (by a qualified indy). The IMS I removed was in perfect condition, but I chose to have LN's put in anyway, in addition to Jakes IMS Guardian.
I actually read that on LN's site years ago before I had my IMS replaced... not that I needed it but I had a thrust bearing liberate itself and when I replaced my engine I had the IMS replaced (by a qualified indy). The IMS I removed was in perfect condition, but I chose to have LN's put in anyway, in addition to Jakes IMS Guardian.