Enlarging PRP doesn't always help

Brian Hafliger said
One thing Larry did lay out for me was how important the valve job is on a port that is way too fast. So now if I have a problem with the port, I make sure the area is where I want it and go from there.

I've never heard it stated that way before. Thanks. I've been testing on the same port for months. Make changes, try things, epoxy the throat and seat back up and try again. I've seen 20 cfm swings from one valve job to the next, but never really thought of it in terms of port speed. Good insight.

Brian Hafliger said
The ONE most important thing I've learned in my 34 years porting is that you have to correlate flow bench findings with engine power...in other words if you gain on the flow bench (anywhere) you better gain on the dyno. If not, you have to learn what the flow bench is telling you...

I really appreciate this point of view. If the flow bench and the dyno disagree, don't throw up your hands and say 'the flow bench is lying to you'. Dig deeper. If you understand WHY the flowbench and the dyno are saying different things you have probably unlocked a very deep level of understanding.

I have realized that there is a limit to what I can learn on the flow bench alone. I can't get my wife to understand that what she really wants is a dyno....

Thanks for jumping into the post Brian. Your advice is appreciated.