The Racetractor. The End.

[Piggy]

Are you machining the ports out then?

Doing some head trickey with the old die grinder bits aye!!

Port/gasket matching is a must though.

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I've never removed or seen valves removed before, so interesting to see for me at least! Surprised at the amount of shite behind the valves though, that must cause a massive restriction!

Tbh that was partially clean when I took that, it was really bad. My original head was the same. The ports were about 40% smaller!