Most people building big horse power RB engines remove the squish pads and fit over sized valves
the prp head comes without the squish pads out of the box
Something strange I noticed is the squish pads on the cylinder head are missing. This doesn't seem super wise to do for a relatively street-oriented build? The shot of it is at 6:42. Does it look like they just machined it out for some reason? Surface finish is visibly different so my best guess is yes.
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