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 Posted: 05-21-2019 06:56 pm
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Esprit2

 

Joined: 05-01-2005
Location: Minneapolis, Minnesota USA
Posts: 575
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 Have you ever read about Lotus carb, cam or ignition specs, and wondered what a "Spec" number meant, like Spec 5 or Spec 9? In TDA, pages 2 & 3, there's a chart that explains how to de-code the Lotus Engine Number format. Each row is a different car model, year or market, and the far right column is the "Technical Data Section Spec Number". The numbers in that column are 1 to 10, in numerical order, from top to bottom. Those are the Spec Numbers.

On page 5, there's some cam application information, on pages 12 & 13, there's carb set-up data, and on page 14 there's ignition data. On those data charts, and elsewhere, the Spec numbers refer back to the model, year and market definitions given on pages 2 & 3.

Spec 5 Dellortos? They're for the 1976-80 European 2.0 907 Esprit, Elite & Eclat.
Spec 9 is for the 1980-onwards European 2.2 912LC Esprit, Elite, Eclat & Excel.
Specs 2, 4, 6, 7 & 8 are 2.0 907 Federal emissions Zenith-Stromberg applications... changing as emissions standards got tighter and tighter.

Now you know.

Regards,
Tim Engel

Last edited on 06-03-2019 09:33 pm by Esprit2