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So why this is OEM solution on turbo engines? I dont really want to drill hole to the oil pan Or made it as Thuppu posted picture...but thats on other side of the oil pan.
That area is for the turbo oil return not a catch tank return.
Besides we are making a huge amount of more power and run much more boost and all that creates more needs and stress to the engine.
A80Avant : i am talking about oil turbo return (that green area) not a catch tank return. So maybe we dont understand each other That hose into oil drain plug is for return for catch tank. So that green area is not enough for oil turbo return?
michaels2s: On that AAT (TDI) block is oil dipstick on the other side (as a water manifold)
I'll be using the s2/rs2 return to the sump for the turbo so that return may be just blocked. I'll check if its worthwhile using it as a catch tank return
Audi UrS4 Avant 2.5 20vt - twincharged - Project
Audi 80q B4 Sedan 2.2 20vt - Daily user
BMW 320d Touring e91 M-Sport - Daily user
BMW 740iA e38 - Project
My point was what is the lowest I can get to for a boost application of up to 2bar and 550hp while at the same time not risking for the pistons to get stuck due to expansion. Manuals are a bit vague!
Audi UrS4 Avant 2.5 20vt - twincharged - Project
Audi 80q B4 Sedan 2.2 20vt - Daily user
BMW 320d Touring e91 M-Sport - Daily user
BMW 740iA e38 - Project
I have those manuals. However given that we are on the 1st line of bore clearance and 0.020 is 0.05mm as a starting point and minimum, hence the debate. I was going to roll the dice and say 0.065mm being the middle of measurements
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