986 Forum - The Community for Porsche Boxster & Cayman Owners

986 Forum - The Community for Porsche Boxster & Cayman Owners (http://986forum.com/forums/)
-   Performance and Technical Chat (http://986forum.com/forums/performance-technical-chat/)
-   -   AOS Failure: what breaks first? (http://986forum.com/forums/performance-technical-chat/73449-aos-failure-what-breaks-first.html)

maytag 01-12-2019 03:45 PM

Well, I tried a couple of versions of a catch can, and so far I'm not happy with any. There's not enough space in there for anything of any real volume.
I've seen a couple of installations where they plumbed the catch can to the trunk, but this being a street car, I didn't want to get that crazy.

So....

I put in a loop of clear, wire reinforced hose. Hopefully this will allow me to see what's going on, and hopefully there's enough volume in that loop to catch the oil, instead of making smoke bombs. And I can just remove it and drain it, until I come up with a better plan.

Sent from my SM-G930T using Tapatalk
https://uploads.tapatalk-cdn.com/201...203af14fc0.jpg

Robert986 09-18-2020 10:56 AM

Quote:

Originally Posted by maytag (Post 587297)
Well, I tried a couple of versions of a catch can, and so far I'm not happy with any. There's not enough space in there for anything of any real volume.
I've seen a couple of installations where they plumbed the catch can to the trunk, but this being a street car, I didn't want to get that crazy.

So....

I put in a loop of clear, wire reinforced hose. Hopefully this will allow me to see what's going on, and hopefully there's enough volume in that loop to catch the oil, instead of making smoke bombs. And I can just remove it and drain it, until I come up with a better plan.

Sent from my SM-G930T using Tapatalk
https://uploads.tapatalk-cdn.com/201...203af14fc0.jpg


So, how did that work out? Tell us! :dance:

maytag 09-18-2020 01:16 PM

Quote:

Originally Posted by Robert986 (Post 624549)
So, how did that work out? Tell us! :dance:

So far so good. No more smoke bombs. I've had to drain it after each track-day, and yes, it always has some accumulated oil in it, which would presumably have otherwise been in the intake.

Sent from my SM-G970U using Tapatalk

Robert986 09-18-2020 02:01 PM

Quote:

Originally Posted by maytag (Post 624552)
So far so good. No more smoke bombs. I've had to drain it after each track-day, and yes, it always has some accumulated oil in it, which would presumably have otherwise been in the intake.

Sent from my SM-G970U using Tapatalk

Brilliant, I might copy this!
Did anyone actually put a catch can in the trunk, connected between AOS & plenum inlet? Any reason that wouldnt work?

Starter986 09-18-2020 02:21 PM

Quote:

Originally Posted by Robert986 (Post 624555)
Brilliant, I might copy this!
Did anyone actually put a catch can in the trunk, connected between AOS & plenum inlet? Any reason that wouldnt work?

A lot have done that... and it's been covered on this forum... so you'll find good information if you go that route.

It would seem Maytag did his research on the cannisters... and if you considering going the trunk route, it'd be his brain you'd want to pick.

He's not little brains. ;)

https://www.youtube.com/watch?v=PKIp6CTliL4

maytag 09-18-2020 02:49 PM

Quote:

Originally Posted by Starter986 (Post 624557)
A lot have done that... and it's been covered on this forum... so you'll find good information if you go that route.



It would seem Maytag did his research on the cannisters... and if you considering going the trunk route, it'd be his brain you'd want to pick.



He's not little brains. ;)



https://www.youtube.com/watch?v=PKIp6CTliL4

Hahaha. That's perfect.

The catch can is ideal, but it has to go in the trunk, and I'm still trying to pretend this is a street car.

When you do it, don't just vent it to atmosphere. You need that vacuum on it, so route it back to the plenum.

Dismiss all of those guys who will tell you that the volume of the AOS is important: it's not. Vacuum is vacuum. The wc is important, the cc isn't.

Sent from my SM-G970U using Tapatalk

flmont 09-19-2020 05:06 PM

I wonder if you can fit the 987 intake system on the 986,.that AOS system has a return tube back to the AOS ,.??

BYprodriver 09-20-2020 08:24 AM

Quote:

Originally Posted by maytag (Post 580648)
Good idea! So, what am I looking for? I mean, what are the weak spots on this motor? Am I looking for broken wrist pins? Bent rods? Broken ring lands? All or any of the above?

Sent from my SM-G930T using Tapatalk



How did this workout ??


All times are GMT -8. The time now is 08:16 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website