Re: relieving valve pockets

Posted by Anthony Pallett On 2012/9/16 1:30:43

Not much of one if any actually. Hudson pistons are flat tops and the combustion chamber is over maybe half the piston. You can get a reverse dome piston that puts a popup in that little bit of space if you need to. A Hudson engine with a mildly cut 262 head would get you there with no issue. The pictures of the relief are kinda deceptive in a way a Washington head quarter displaces roughly 1cc so mentally arrange quarters in that space and i would be surprised if it was too much more than 5cc total so you wouldn't lose too much compression.