DK4 Automatic Advance

[Chris KC]

My own experience of modifying the advance plate is that you will do better to proceed slowly/ incrementally and measure the result (use a DTI). It's not quite as 'linear' as one might suppose. As Austin says, many plates need reducing rather than increasing, once stripped the hole is 'restored' with a blob of weld and filed back to the desired size (flattening off the blob, of course).

Beware too much ignition advance, it has seen off many a tired crankshaft.