Does anybody know what this does on an AAT 2.5TDi?
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1991 Audi S2 3B - 2.5 Stroker engine
1997 A6 2.5TDi quattro avant - C4
1976 RD250E / 350LC cafe racer -
It's a thingy in the sump.Kingdoms are run by Kings, Dictatorships are run by Dictators.
England must be a Country. :mischeif: -
Erm......having a chat with the other half and we're thinking that it's an oil sump but when you look at the engine pics on Audi we can't really find the exact bit that you are on about
it doesn't appear to be listed which is a bit strange as normally etka shows it but you can't flip the image around to show the underneath 
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whats on the block side?ChefComment
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Thats where I got to looking at the FA, it appears to channel the oil drained from the head from one end of the engine to the other but I'm not sure why. On the TDi there is no windage tray so it can't be re-fitted, just wondered what the consequences might be?
Looking at other pics of the S2 engine it appears that this has nothing attached to it, so I'm guessing it'll be fine.sigpic
1991 Audi S2 3B - 2.5 Stroker engine
1997 A6 2.5TDi quattro avant - C4
1976 RD250E / 350LC cafe racerComment
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Could it be to move the oil to the front of the engine when its returned?Comment
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Pop the part number into ATP within the FA, should tell you.
Is it 046 103 145 ?2001 Avus Silver B5 RS4.
2004 A4 Avant 1.8T quattro Sport-LE.
1995 S2 Coupe - sold (sniff)Comment
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maybe block it?ChefComment
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Looking at this picture of Stu's 3B, there is nothing on the S2 so I assume it should be fine.
I'll try the ATP trick tomorrow and see what it says.sigpic
1991 Audi S2 3B - 2.5 Stroker engine
1997 A6 2.5TDi quattro avant - C4
1976 RD250E / 350LC cafe racerComment
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It's some sort of baffle for the crankcase breather. Will a windage tray fit with the long stroke crank?SSComment
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Windage tray fit fine on the stroker, only thing I had to do was cut some holes in it to clear the ARP studs
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1991 Audi S2 3B - 2.5 Stroker engine
1997 A6 2.5TDi quattro avant - C4
1976 RD250E / 350LC cafe racerComment
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could it be simple to move the vent for the crank case out of the path of the oil thrown off the crank. May be the longer stroke of the deisel crank throws the oil straight up the vent. And they had to move it forward as there couldn't just extend it because of clearance with the sump.never set your expectations to high that way you are never disapointedComment
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The part is the crankcase ventilation duct, so as said above, it could be there to deflect oil thrown by the longer stroke crank from the crank vent hole. Surely some form of deflector plate could be fitted/fabbed???
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Little bit old topic, but could be used this diesel breather block on diesel engine block (aat) with oil windage tray and 7A oil sump?
I forget to check it and assembled engine without this breather and before a while I remeber on this
Audi Coupe Quattro 2.3 20VComment
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