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Brass Carburetor .47 Idle Jet, These Precision Machined Brass Jets Fit Weber 40/44/48mm IDF, Weber 40/42mm DCNF, Empi 40/44mm HPMX Carburetors. With A Variety Of Engine Sizes, Cylinder Head Modifications And Camshaft Choice It Is Highly Recommended To Check Your Air/Fuel Ratio And Jet Your Engine Properly.
Example:
13.0:1 = Rich
14.7:1 = Stoichiometric
15.0:1 = Lean
A 'Stoichiometric' Air Fuel Ratio (AFR) Has The Correct Amount Of Air And Fuel To Produce A Chemically Complete Combustion Burn. Gasoline Engines Ideal Stoichiometric AFR Is 14.7:1 Which Means 14.7 Parts Of Air To One Part Of Fuel. The Stoichiometric AFR Depends On Fuel Type. Alcohol Is 6.4:1 And Diesel Is 14.5:1
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