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Anonymous
Guest
In a post within the last year or so, in a discussion about engine design and efficiency, someone made some comments about the VW 4 cyl aircooled engine. I wanted to read those comments again but can't find them.
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Anonymous
Guest
After being sidetracked for 6 or 8 months, I'm doing some fabricating for my 100 mpg tests. I was also thinking about a second test vehicle and my neighbor has a VW van for sale. I want to heat the air intake charge to about 220 degrees. I was thinking about the VW's air cooling and the great source of heated air it could provide. Does the fan draw air across the engine or blow? But about the previous post. Someone was commenting about air cooled engines, and the opposed 4 cyl, giving the VW as an example. If I remember correctly, the comment was to the effect that they weren't the best design for efficiency and high mileage.
The VW cooling fan blows the air across (down) the cooling fins.
The VW was designed in the 1930's. Combustion chamber design has advanced considerably since then. The air-cooled Vee-Dub is notoriously prone to overheating if abused, and they will detonate themselves to death at frightfully low compression ratios. I still drive them because I like to 8)
Joe
The VW was designed in the 1930's. Combustion chamber design has advanced considerably since then. The air-cooled Vee-Dub is notoriously prone to overheating if abused, and they will detonate themselves to death at frightfully low compression ratios. I still drive them because I like to 8)
Joe
Fred
Well-known member
The VW should be appreciated for what it is / was: the last 1930s car in mass production, and the 1930s car produced in the most numbers. I happen to think the nicest cars were built in the '30s and like decent gas milage, thus I drive a bug.
As for heating the intake on a bug motor, the factory did this. There is a "heat riser" tube that runs along the length of the intake manifold. This combined with the fact that these motors run pretty darn hot to begin with means that the intake is probably somewhere around 200 degrees on your typical hot day anyway.
As for heating the intake on a bug motor, the factory did this. There is a "heat riser" tube that runs along the length of the intake manifold. This combined with the fact that these motors run pretty darn hot to begin with means that the intake is probably somewhere around 200 degrees on your typical hot day anyway.
