P80 Positive Temp Coefficient Nipple "PTC VALVE" To drill, or not to drill

Post by **xHeart** » 16 Apr 2019, 09:23

erikv11 wrote: 16 Apr 2019, 09:08 ... And non-turbo cars like yours do not have a PTC. You may be thinking of the flame trap orifice specific to NA cars, which can be accessed by removing the air intake from the front grill and/or the air filter box for full access.

Flame trap:

tardcart · Post by **tardcart** » 16 Apr 2019, 11:01

Im glad to finely know what PTC stands for, though I've forgotten already. Although I once thought it made sense to enlarge the hole, now I don't, though its reason to be is not clear. I do think that a one way valve should be put on the small vac line from the manifold to allow vac only and no turbo pressure into the PTC area.

Post by **ZionXIX** » 16 Apr 2019, 13:30

erikv11 wrote: 16 Apr 2019, 09:00 I first posted these in ZionXIX's thread viewtopic.php?f=1&t=84698. It's been 18 months now, with no ill effects on my 95 R.

Literally not a single issue since I followed your suggestion. I am considering upgrade the pcv hose to a copper pipe when I change out the pcv.

callahanoffroad · Post by **callahanoffroad** » 17 Apr 2019, 08:33

ZionXIX wrote: 16 Apr 2019, 13:30
erikv11 wrote: 16 Apr 2019, 09:00 I first posted these in ZionXIX's thread viewtopic.php?f=1&t=84698. It's been 18 months now, with no ill effects on my 95 R.

Literally not a single issue since I followed your suggestion. I am considering upgrade the pcv hose to a copper pipe when I change out the pcv.

I did this on my non turbo although I used a very tough flexible fuel line. 5/8" I think. My wacky manifold shape requires some flexy bending. I can say that the pcv properly functions. But I still suspect that I have blow-by as my oil smokes every 3000 miles. I just learned to accept that it means that I need to change my oil. Hahahaha

Post by **abscate** » 15 Nov 2019, 05:23

If anyone needs a replacement nipple ...

....I have one from a snorkel replacement.

Peevarino · Post by **Peevarino** » 15 Nov 2019, 06:29

Rattnalle wrote: 16 Apr 2019, 07:06 Volvo put it there for a reason. Don't mess with it other than making sure it works by cleaning it.

My two cents.

PS that goes for things like cats and other stuff as well.

I thought cats cleaned themselves? Hence all the hairballs. It’s definitely good to just leave them where they are.

Post by **abscate** » 15 Nov 2019, 06:43

Peevarino wrote: 15 Nov 2019, 06:29
Rattnalle wrote: 16 Apr 2019, 07:06 Volvo put it there for a reason. Don't mess with it other than making sure it works by cleaning it.

My two cents.

PS that goes for things like cats and other stuff as well.
I thought cats cleaned themselves? Hence all the hairballs. It’s definitely good to just leave them where they are.

You are going to fit in here really well.

Post by **Rattnalle** » 15 Nov 2019, 14:40

Peevarino wrote: 15 Nov 2019, 06:29
Rattnalle wrote: 16 Apr 2019, 07:06 Volvo put it there for a reason. Don't mess with it other than making sure it works by cleaning it.

My two cents.

PS that goes for things like cats and other stuff as well.
I thought cats cleaned themselves? Hence all the hairballs. It’s definitely good to just leave them where they are.

Don't mess with it still applies though.

Post by **abscate** » 13 Aug 2020, 18:57

While tallying up the votes to kick out the 960s, I read my user manual on my T5 and it reads

PTC cleaning at 60 k miles, and then every 30 k miles thereafter