I have an engine bay blower in the engine bay behind the license plate .I exhaust through and around the license plate. ? is this blower stock or was it put there . If not please explain where exactly this Esprit S1 blower was installed originally thanks?
On Wed., Jan. 1, 2025, 9:39 p.m. Bill Galbraith via , <Lotus=
[email protected]> wrote:
Hay, I just found out something. (I¡¯ve been a Lotus owner for 35 years). Not all cars have the engine bay blower, only the high ambient temperature climates.
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So, if you live in one of those areas and your car doesn¡¯t have the bay blower, you might consider it.
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Bill
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P.
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I did the calculations of the effects of running without the correct airbox, instead just using K&N filters or similar on the carbs, sucking in hot air from the engine bay. The results were pretty amazing. Lots of horsepower lost. You can find that paper on my web site:??
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I can¡¯t measure the temperature under the engine cover of a standard car, as I¡¯ve done many things to my car to reduce the temperature. I¡¯ve had the header Jet-Hot (ceramic) coated and I wrapped the exhaust all the way to the muffler in header tape. That made a HUGE difference of the temperature near the left rear wheel well. I also have the proper engine bay blower, but an adjustable thermostat set really low (140 deg F I think). I¡¯ll try to measure it the next time I¡¯m out, although it¡¯s winter in Florida. It will only be 60 deg F on Saturday, instead of 95 deg in the summer.
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Bill
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The carbs were rebuilt by WEBER JETS in Vancouver Canada. EXPENSIVE. But the 2977 Esprit S1 runs like a ROLEX PRESIDENT.
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That Weber spec is interesting to say the least. The original Twincam at 1500cc and 95-100 HP was so equipped, wouldn't think that to be optimal for output on the 907 but it would run like a Swiss watch if the carbs are in good shape.
P.
