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Steven wrote: >>>Someone said it was a bad idea to pull combustion air from the cooling air system, as the stock systems do, if I remember correctly because the fan reduces air pressure on the combustion intake. Someone else said that trying to use the fan to raise pressure on the intake would be counterproductive, since the intake pulls more air than the fan can supply. This implies to me that the intake would steal air from cooling rather than vice versa. The cooling fan pulls about 1400cfm at about 4000rpm (don't remember exact stats). Now even a 2L engine at 6000rpm would probably only use 300-400cfm. So, if anything, the cooling fan could starve the carbs, but there is so much air available through the louvers that niether will starve. I believe (IIRC) the last time I looked into the carb hole in the apron, there was a small "dam" on one side, which probably helps flow into the carbs. I don't think it is worth loosing sleep over. My thinking is to seperate the two to reduce turbulance.....or maybe my brain is just off on one of those wild hair tangents again. Just can't leave anything alone. Brian Schlepp 69 Fasty - "Purple Passion" ------------------------------------------------------------------- Search old messages on the Web! Visit http://www.vwtype3.org/list/