LSA Question

Mean416 said
I've done a bit of dyno testing myself. Been a very long time. That doesn't have anything to do with the "128 rule".
DV is a living legend. All credit where it's due. But his YouTube stuff is snake oil. "FREE" and "BUDGET" and "LOW DOLLAR" verbiage thrown about in thumbnails, where he then goes on to talk about crap like ultra light cranks and exotic head porting. It's all over his channel. It destroys his credibility.

And the 128 rule. As well as other things he puts out there, are misleading guys into thinking they're making informed decisions.

So you have never tested the 128 rule? I can tell you that I use his 128 rule most of the time because it’s a quick way to get very close on LSA. Way closer than what most end up with.

And coincidentally I have another, much longer formula that requires me to use a scientific notation calculator and the two are usually within a degree of each other.

If you have the P/V without huge valve pockets then I always err on the side of a tighter LSA.