I recently received a set New K24's that had failed. I did not sell the units, but was instructed to repair them.

Here are a few pictures of what wiped them out.





These check valves were originally installed on a '02 996TT. The owner purchased a new set of K24's. Instead of ordering new check valves, the old ones were installed. One can notice that the valves is/are a two piece design. A stainless steel screen is used to filter out debris from entering the turbochargers bearing system.

When one makes the decision to re-use the check valves, you risk disrupting the filter screen layers. The debris migrates into the turbochargers. Bearing failure is 100%

Why does someone spend $2,500 to $3K on a set of K24's and then mounts the old valves.

__________________
Ultimate Motorwerks

kevin@ultimatemotorwerks.com

360.805-9066

Because one is CHEAP!

Or in many cases they just didn't know any better... Who knows why people do stupid shit.
Mike

__________________
http://i145.photobucket.com/albums/r...heelsup24k.jpg
"I will not be a spectator in the sport of life!"
mjk 1994

Holy Crap! More than likely didn't do work themselves and the installed save some time and a few bucks. Sad :-(

Is there a story behind this?

__________________
Deepblue - '01 Turbo - Lapis Blue
UMW 2C :: GT2 Brakes, GT2 Bumper and Wing :: X73 with RS Mounts
Sachs Stage 4 Clutch :: EuroPipe2 Loud :: ECM Suite ;-)

These are the thrust components that get wiped out when contaminated oil enters the bearing housings.

__________________
Ultimate Motorwerks

kevin@ultimatemotorwerks.com

360.805-9066

Hi,
Kevin - This is also a very good reason why synthetic lubricants and regular regular lubricant/filter changes are very important too

Some synthetic lubricants keep (especially turbocharged) engines cleaner than others (M1 is a good example) and this cleanliness relates to flow back to the bulk supply area, filter and in keeping suction screens, "hydraulic" valves, orifices and other passages clean and free of debris

I have often seen the failure of turbochargers in heavy diesel engines due to exactly as you hacve depicted. Your "TIP" is well founded

__________________
Regards
Doug Hillary
MY06 CLK Benz (M1 0w-40)
MY01 Boxster 2.7 Tiptronic (Delvac 1 5w-40)

While on the wiping out turbo's subject. How about draining the oil from the turbo at an oil change. Does that leave the turbo starved for oil at startup?

See kevin's other post for advice on this

see here

__________________
Statman
04 996TT Cab (description & pics)
Go Buffs!
Fight On!

http://www.turboflatsix.com/oil-filt...190.html?t=190

Everyone should pull Fuse C 4.. That is Row C 3rd row down. 4th fuse to the right.. Which is a 30 amp fuse for the fuel pump.. A tip.. Prior to dropping the oil, pull the fuse and crank the engine over. It might fire for a half a second. This purges the fuel rail pressure so that when you turn the ignition with fresh oil the engine doesn't fire off (just a half second at most)

By the way folks.. I have been running 5W for the 6 months and the engines that I have been filling are much quiet > valvetrain and intermediate shaft..

__________________
Ultimate Motorwerks

kevin@ultimatemotorwerks.com

360.805-9066

Are you saying 5W-40 as opposed to 0W-40?

__________________
Deepblue - '01 Turbo - Lapis Blue
UMW 2C :: GT2 Brakes, GT2 Bumper and Wing :: X73 with RS Mounts
Sachs Stage 4 Clutch :: EuroPipe2 Loud :: ECM Suite ;-)