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Old 03-10-2012, 09:51 AM   #1
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Hi Chuck!!

Just run the AOS. I sat on the original rules committee that put BoxsterSpec together. I have traveled the country running the 2.5 cars since Nov. of 2005. I have replaced a total of 2 AOS at track events since then.

The 2.5 car's have close to NO issues. A forum member here "Topless" has his OE 1997-98 horizontal AOS still in his car!! The very first versions had a horizontal diaphragm, the newer versions have a vertical diaphragm. Topless hits at least 10-12 events a year and is by no means what we deem "a back marker"

The real issue with our AOS? (on 3.2 and up engines) they cannot drain the oil back into the engine fast enough as they fill up. This is why it gets through the diaphragm. Porsche solved the issue several years back on the 996 3.6 engine, then a newer fix for the CaymanS engines.

Are you the new owner of Goodies?



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Old 03-10-2012, 09:57 AM   #2
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This is straight out of my arse, but I believe ALL inline engines have less of an internal air pressure issue versus a horizontally opposed engine.

FYI: new AOS's are $93. Keep a spare with you, or look for me at the track

I'll be up for the THIll PCA club race and will be at the NASA Buttonwillow event.


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Old 03-10-2012, 10:26 AM   #3
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Quote:
Originally Posted by Brad Roberts View Post
Hi Chuck!!

Just run the AOS. I sat on the original rules committee that put BoxsterSpec together. I have traveled the country running the 2.5 cars since Nov. of 2005. I have replaced a total of 2 AOS at track events since then.

The 2.5 car's have close to NO issues. A forum member here "Topless" has his OE 1997-98 horizontal AOS still in his car!! The very first versions had a horizontal diaphragm, the newer versions have a vertical diaphragm. Topless hits at least 10-12 events a year and is by no means what we deem "a back marker"

The real issue with our AOS? (on 3.2 and up engines) they cannot drain the oil back into the engine fast enough as they fill up. This is why it gets through the diaphragm. Porsche solved the issue several years back on the 996 3.6 engine, then a newer fix for the CaymanS engines.

Are you the new owner of Goodies?
B
Hi Brad-

Not new owner of Goodies....although I'll take it!! So I'll get a new AOS and be done with it! Thanks again!

-Chuck
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Old 03-10-2012, 03:01 PM   #4
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I'm all for re-inventing the wheel, but .. this is one of those times we don't really need too

Glad to see/hear that NorCal Spec cars numbers are increasing


Mr. Potter has a bulls-eye on his back



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