pfbz

For those that came from the 996 Mezger Turbo world, it's always deja-vu working on the 991. The basic design for so many things is eerily identical, but virtually every individual part is different.

In the case of the boost hoses, what used to be three different parts that could be replaced separately (boost hose, retaining clips, 0-rings) is now a single part and the clips are captive.

Video of how much play that boost hose had before I replaced it and after:

pfbz

I'm not sure if this is the "official" technique, but I used 2 medium-small flat blade screwdrivers inserted and slightly levered at the blue arrows which releases all three of the red clip areas. The hose will simply -push- on and automatically move the clips out of the way, but you have to push fairly hard to make sure they are fully seated and locked or they will blow off the first time you hit bigger boost.

I had a bit of oil in the hose... It was much less of a concern than the likely boost leak that was there, and actually it was the residual oil weeping out that led me to look more closely at that hose..

2fcknfst

Time for some catch cans, perhaps.

Mercuriell

Thanks for the explanation - I might see if I can adapt a metal forked trim tool to fit into those two clips you arrowed

pfbz

I think a small amount of oil accumulation inside the boost hose is normal, a bit of turbo oil blow-by. But unless you have a slightly bad seal in the boost hose, it's not visible. Out of sight, out of mind

I don't think a catch can will do anything for this, as catch cans usually catch crankcase oil blow-by which I think gets fed back into the intake track well downstream of the turbos...

Edit:
I was just reading on another (Audi) forum about a similar issue and the speculation that it *might* be downstream crankcase/PVC/AOS blow-by that gradually runs down backwards to the low point in the boost hose, in which case catch cans might help!

911dude41

After installing do88 hoses on my 2018 it now has as much play as your first video. Not a fan.

Phattymcgee

Not yet. About 6-8 weeks to go. I am waiting impatiently!

Redlinerobert

Picked up my car from Sharkwerks last week. Tune, Y pipe, plenum, intercoolers, exhaust, and filter. Holy schmoly. This thing is nuts. Alex and King James did a great job.

2fcknfst

Which exhaust?

MotoJB

Nice Robert! Congrats!

What IC's did you go with and who's tune? As I recall he was selling EVOM's tunes?



LOL, I'm pretty certain that would be Sharkwerks exhaust.

2fcknfst

You're probably right...

Redlinerobert

I went with the Sharkwerks exhaust and Evoms tune. CSF intercoolers in custom black finish. Alex has been a good friend for close to 20 years. He would divorce me if I used anything else!

Oh and I just started using Instagram. @Rrf sjb. Alex posted a pic of my car so you can find me there.

2fcknfst

Nice, enjoy in good health!

PorscheJN

I just checked CSF, Evoms and sharkwerks but nobody has your picture on their Instagram so who’s Alex? Lol!

bigrpowr

stalker! j/k