Gary R.

From everything I read part #99610792600 fits 2003 and up Boxsters, what are you guys (or your shops) installing? The guy that built my car apparently "doesn't believe in them" and thinks you should run lower oil levels. I don't share that opinion...

Dave DE

I've had good luck with the standard AOS running normal oil level with deep sump.

Bill Lehman

Gary, I run the 996 part you quoted, it made a significant difference in a high G LH turn like turn 6 @ WGI in my track prepped Cayman S.

Gary R.

Thanks Bill, the big question is does it fit the 98-99 2.5L and if modifications are required. I've seen enough Boxster mosquito destroyers at the track to know I want no part of it! Not good for the intake system, plugs, or anything else as it also causes massive vacuum pressure in the block..

Dave DE

I run one on my Cayman also. Haven't found I needed it on the SPB.
Probably not going fast enough..

jdistefa

Gary, it takes extensive mods to put a motorsports AOS on the early Boxster. I don't know anyone in SPB who has done it.

Use a deep sump (LNE, Mantis, etc.), updated 997 sump a/o separators, put a fresh upper AOS on, and top the oil up. You will be fine.

Gary R.

Got a deep sump lined up from Ernie, will follow your lead. What are the updated 997 sump AO separators? Thanks Matt!

jdistefa

^ Gary, part number is 996.107.080.54 for the original "swirl pots" or sump air oil separators.

We changed to the 997 units. Not sure re. evidence that one is better than the other, but certainly consider replacing them while you are putting on a deep sump kit. These parts (there are 2 in the sump) are the first stage in de-aerating the oil.

Gary R.

Matt - is the 997 part #996-107-026-51?
The 986 part is 996-107-023-04

This is what I come up with on Pelican.

997 Oil Separator --------- 986 Oil separator

Gary R.

Found an in-place pic..

jdistefa

^ Yup, the second set of pics are the ones. Two in the sump. There's some debate over the 996 (original) design vs. 997 but either way it's probably a good idea to replace them while you're in there. Cheap insurance.

bkovac

sent you a pm

Gary R.

DUH

jdistefa

a) yes
b) no
c) stop drinking
d) start drinking
e) please rephrase your question in english
f) all the above

Gary R.

LOL...

Matt - Two sips into my bourbon so that isn't it..