View single post by Esprit2
 Posted: 10-30-2005 01:53 am
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Esprit2

 

Joined: 05-01-2005
Location: Minneapolis, Minnesota USA
Posts: 295
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Judson,

I was quoting "Lotus" Dellorto set-up's.   Lotus numbered their carb set-ups (Stromberg & Dellorto intermingled) sequentially as set-up changed through the years and models.   Spec-1 through Spec-10 cover the evolution of the Lotus version of the naturally aspirated 907 and the 912...  Elite, Eclat, Excel & Esprit.   Lotus only used DHLA 45E's on their N/A 9XX's,  never 40's, and their Dellorto set-ups are covered by...

Spec 1, 1974 DOM 2.0 907,    38 mm chokes  (too big)

Spec 3, 1975 DOM 2.0 907,    35 mm chokes  (too small)

Spec 5, 1976-1980 Euro 907, 36mm chokes  (just right)

Spec 9,  1980+  2.2  912,       37mm chokes (Lo-CR, 9.4:1)

Spec 10, 198?+  2.2 912 HC 37mm chokes (Hi-CR, 10.9:1)

I run Spec 9 on two almost stock 907's and on a hotrod 2.2 907,  and they run beautifully.

Tim