Today, dollar for dollar, is the 318 faster than the 340 ???

What part of a straight, untapered and still cross hatched good bore is stupid?
It had a small carbon ridge that cleaned up with a razorblade...

Why should an over bore help? ????

Remaining stupid I guess.
School me o'l wise one.


Did you put a bore gauge in the hole or just eyeball it? There isn’t any cylinder I would run today that was any factory bore. Crosshatch means nothing because it’s most likely wrong for today’s rings. Factory bore geometry was horrible. That’s why you bore a cylinder. To get it correct, and the factory finish was marginal in its day. In fact most guys today don’t measure their finish and they have no idea how much they could improve the finish if they measured it.