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[flatjack9]

Most Mallorys have a slow advance curve. Just the opposite of what a flathead wants. You need about 22 to 24 degrees by 2000 rpm. You'll need to establish a timing mark and check the advance with a timing light.

[Mike B]

In case you missed this post...looks like a recurve is in order.

Originally Posted by flatjack9

Most Mallorys have a slow advance curve. Just the opposite of what a flathead wants. You need about 22 to 24 degrees by 2000 rpm. You'll need to establish a timing mark and check the advance with a timing light.