Ah, ok. Well, I doubt the Euro headlights are actually "starving" the engine of air. A diesel, especially, will take whatever air it needs from wherever it will. Maybe it's not cold, fresh air, but, I'm sure it's not starving.
These Euro vs. North American-spec headlight discussions always remind me of one that was on the old W108 board some 12- 15-years ago. It was pointed out that, while the reasons all vehicles sold in North America required round, sealed beam headlights were a bit murky and even conspiratorial, the fact is that a round, convex surface will spread the force of an impact over a wider area, lessening the chance of shattering. Add to that was the availability of very bright units on the aftermarket by S.E.V Marchal, Cibie and others, and many of the rally and racing crowd would often replace their Euro set-up with those from North American-spec cars. In the '70s, SAAB, for instance, substituted the whole front end of their (then) champion rally team cars with the ones for North American cars when the 96 and 95 went from round headlights to flat, squarish ones (1970-71).
(The flat, squarish headlights much easier lent themselves to the installation of headlight wipers, mandatory on cars sold in Sweden after 1971).
What struck me as funny was that, on the W108 board, there was active commerce between the North American and Euro/Aussie members, trading headlight systems. The Euro/Aussies wanted the better performance the North American headlights provided, while the Americans liked the Euro look....
Mark in Lakewood, CO
> To: diesel_mercedes@yahoogroups.com
> From: bgiovan@cavtel.net
> Date: Fri, 21 Jan 2011 08:12:51 -0500
> Subject: Re: [diesel_mercedes] Euro headlamps on the W116 300SD
>
> Maybe I misspoke. The air tube that goes in behind the right headlamp
> assembly which in typing this reply makes me think it's fresh intake
> air? At any rate, my worry is that the round headlamps have that
> natural air gap where these Euros do not so I'm starving something of
> air. I'll shoot a pic later.
>
> Ben near Detroit.
>
> On 1/20/2011 11:24 PM, Mark in Lakewood CO wrote:
> >
> > The only air for the turbo comes in through the air filter. Are you
> > saying there's no air going into the air filter?
> >
> > Mark in Lakewood, CO
> >
> > ------------------------------------------------------------------------
> > To: diesel_mercedes@yahoogroups.com
> > From: bgiovan@cavtel.net
> > Date: Fri, 21 Jan 2011 02:29:48 +0000
> > Subject: [diesel_mercedes] Euro headlamps on the W116 300SD
> >
> > Ok so everyone is aware I picked up that 79 300SD and am in the midst
> > of redoing the head (head in shop, had starter rebuit, doing the
> > Mercedessource turbo rebuild this weekend).
> >
> > At any rate, the previous owner put Euro headlamps on it. Looks great
> > but one thing...air for the turbo cut off. Any thoughts as to the
> > practicality of keeping the Euros on it or should I go back to the US
> > Spec rounds so air gets in the turbo?
> >
> > Ben near Detroit
> >
> >
> >
>
>
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