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September 29th, 2008

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Q & A: Lucas Distributor Point Gapping

Thursday December 13th, 2007
Q & A, MGA, MGB, MGC, MG T-Type, Midget
John,


The distributor is a Lucas 41599B4504 4274. After removing it to get the number I checked the points and regapped to .016 inches the car idle was really low. I readjusted the idle to 900 RPMs. The dwell is 44 degrees, but I am noticing condensation on the aluminum spacer that came with the side draft weber carburetor I installed. When revving the engine to 2000 - 2500 RPM the engine feels less smooth.

Thank You for your help!
Randy



Randy,

That distributor is a 45D4 and should have a point gap of 0.015" for
a dwell of about 52 degrees. Set the timing at 15 before top dead center at
1500, vacuum disconnected. See how that works.
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