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MSD 8224 coils - Engine/Ancilliaries - The Lotus Forums #ForTheOwners Jump to content


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Hi all,  in order to make sure I have the best spark possible I have removed the coil set up, cleaned /sandpapered the chassis plate and coil back plate to make sure of good electrical contact. Using ring connectors I have grounded the coil backplate direct to the battery and also grounded the two lower 5.5mm bolts using a wire loop and then direct to the battery.

My questions: on the Oe and MSD coils the 5.5mm bolt holes have a lot of clearance.Why is this? I presume the brass(?) ferrule is part of the coil circuit and should have a good ground between it and the bolt which appears to be covered in black paint! If it is a gap left for expansion it seems very large.

For a later date how do you measure the primary and secondary resistance of the MSD coil?

The resistance of my approximately 5year old Magnecor KV 85 leads are,7.9,7.4,5.9,5.9 k ohms.There are suggestions on the forum that much higher values than these are ok, comments please

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