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Showing results for tags '47605.009'.
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The Spruell Motorsport shipment just arrived with the stronger Weber 40 DCOE Throttle Springs. These springs are used to firmly close the throttle plates shut. This ensures consistent performance as explored and discovered in this thread: http://www.classiczcars.com/forums/carburetors-s30/48969-weber-internal-spring.html For reference, here are the Weber part numbers: 47605.012 Weaker 47605.027 Standard 47605.009 Stronger I decided to measure the spring constants of the springs I had on hand for reference: ?????????? (is from Pierce Manifold sold as 47605.009 BEWARE) New 713.2 N-m 526 Ft-Lbs 47605.027 Used 1,634.4 N-m 1,206 Ft-Lbs 47605.027 New 1,669.2 N-m 1,231 Ft-Lbs 47605.009 New 2,203.7 N-m 1,625 Ft-Lbs I am not sure of the age of the used standard spring but it has not aged much.Clearly Pierce sent the incorrect spring.The stronger .009's are ~ 33% stronger
