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Any analysis is only as good as the flawed assumptions that underpin them

I went from ported 302's to mildly ported 587's around the same flow (240's) nothing else was changed and it was all top end and lost all the torque under the curve. I remember Lead69 posting this: "Very cool thread,nice to see you document this for everyone.I ported a set of 318 heads for a...

Imagine that........Maybe you could tell us how we go about creating and enhancing these "Efficiencies"

I've only come across 2 guys who could run compression ratios into the 20s and one of them was doing it with pump fuel. Can you point out all these head porters who know enough about this stuff who are doing that?

Most head porters have no idea what combustion is and how it takes place. When your only objective is to increase airflow why would they?

"I built a number of intake manifolds to help produce ball-busting power at the bottom of the gear and each improved ET’s. The manifolds included the first cast aluminum tunnel ram (Engineering project in school) which use d a Wieand BBC plenum, “the hairy one” which I made of fiberglass (NHRA...

Here's Larry Widmers take: There’s a lot that leads up to this, but here’s a quick and dirty of my first experience with dynomometers (other than for kart engines). Our BOSS 429 Mustang had run 10.0’s locally at two tracks, before we were heading up to our first really big drag racing event in...

My view is a little different. Looking at the incrementals it was quicker everywhere except the 60ft. The fact that its was able to do that with 5.5 inches of vacuum tells me that engine needs vacuum to aid it in the vaporization department as he's running pump fuel which has higher temp...

You mean Morgan can actually see what's happening?

What defines whether its too fast or too slow?

Why would it split?

@Mattax did you ever fix that combo you and Bruce spoke about?

:rofl::rofl::rofl:

That's funny some one else saw the gaping inconsistencies I pointed out. And Maybe I should post the video of Kaase sticking his finger in an intake port in a running engine so you can see the reversion and how far it travels back up the port? Pay your money and target what ever you want.

Pay your money and target what ever velocity you want. P.s. when was the last time you looked at that pic of your intake manifold with the evidence of reversion?

What happens when you increase the vacuum in the plenum? Why read spark plugs......when you have a formula.

Did you make the assumption that the fuel droplets are all the same size and uniform in weight as they leave the carb and magically turn corners like gasses do? Let me guess you think a formula can tell you what size droplet the fuel is when it has to travel past the exhaust charge as it...

But he has a chart and DV preaches it so it must be true.

You pointed out that Darin Morgan said he is a velocity manager did you not. Why is velocity important.

Tell me why velocity matters

Software trumps Physics.

Why would velocity matter?

Shhh.......You'll get sacrificed on the alter of the hot rod engine builder gods for pointing that out. The emperor has no clothes.

If you want to believe those numbers are set in stone then pay your money and get your heads done so they get exactly the number you want.

No one said he was fucked you did. All I'm pointing out is those numbers do not account for all the variables in a running engine. If you want to use them go right ahead.

All I'm doing is simply pointing out the flawed assumptions and holes in claims people make.

:rofl: They're currently feverishly scanning DV's books to find mention of these points....

No need. Too many variables to accurately predict combustion outcomes with a simple simulation program.

It doesn't, that chart clearly shows there's no such thing as reversion.

There fixed it for you. Maybe DV could tell you all about his scientific testing?