custom, silicone upper and lower AOS vent lines
 

This past weekend, I was working on tracking down a vacuum leak on my Boxster (it's throwing a P0492 code) and cracked the AOS lower vent/breather line/hose. After searching (scouring) the web, I realized that no one makes replacement silicone hoses for this application. Researching how silicone hoses are made I came to understand that it is hugely labor intensive and does not make economic sense for small orders.

I am considering starting a group buy or going it alone and ordering a large quantity of lower vent hoses. I wanted to gauge interest before entering into something like this. I also wanted to know if buyers would prefer hoses with "bare" ends, that installers could clamp using their own, preferred method or if I should try investigate integrating a Porsche style clamp on the ends of the hose.

Admins, if this needs to be moved somewhere other than General Discussions, could you do that for me? Thanks

I'm not sure if this can help you but check out post #7 of this thread.
https://986forum.com/forums/performance-technical-chat/79368-so-i-have-spare-engine.html
Two years later it is still fine, and no leaks with no sealant.

Thanks for that. I'm going to try a similar solution. Various manufacturers produce flexible, silicone hoses. I was looking at those but they're pretty expensive. There is a product called exoflex that I'm researching:

Shields Marine ExoFlex Hose has a EPDM cover and is constructed of synthetic plies with steel wire helices. It is black corrugated material is very flexible with a 1.5" x ID" radius.Exo- Flex hose is suitable for delivery of cooling water and exhaust gas. Tighter corrugations allow for optimal clamp locations. The hose is resistant to ozone and abrasions as well as heat and saltwater. This hose is Lloyds approved. The temperature ranges from -22°F – + 212°F with peaks to 239°F. The hose meets SAE J2006 Type 2 standards. Now double the ozone resistance required by SAEJ2006.

Do you recall the diameter of the hose you used? Since I have everything out it would make sense to do them now, and I have a couple of spare hose ends to test with.

edit: never mind, I appear to have a reading comprehension problem. 3/4 inch...