Mick's 70 Lowlight

Made a side by side photo of a stock exhaust valve and the ported valve I did earlier - a before and after comparison. As you can see the stock exhaust valve is pretty ordinary. What's worse is that the slow curve - the one at the top of the photo - is literally like a sharp ridge that is the whole width of the port. You cannot see this in the photo as it is hidden from view, the only way to know that it is there is to feel it with your finger.