A Good, Quick Read on VE % vs. Boost Pressure

[earlbrown]

I'm also surprised at just how rarely people mention that head flow really means dick on a turbo engine.   Granted, anything you do to decrease restriction is a net positive...    but there's no need to spend $1000s when a simple 1/2 turn will do the same thing. (until the combo is maxxxed out)

[motorhead]

I'm also surprised at just how rarely people mention that head flow really means dick on a turbo engine.   Granted, anything you do to decrease restriction is a net positive...    but there's no need to spend $1000s when a simple 1/2 turn will do the same thing. (until the combo is maxxxed out)

I believe the point of the thread was to indicate a correlation between building the best, most efficient, naturally aspirated engine possible so as to prove to make it a better engine with boost.  Not just using boost as a performance band-aid as the Turbo Buick does.

We (the hobbiest) should be focusing on air flow (in and out) and not just some random number that is a function of a restriction.

[ttipe]

Please understand I AM NO EXPERT. I will drive my T Type into the pond when I start thinking like I'm some hot shot that knows all of this. My reason for an aluminum head is driven by being able to run pump gas on the street. I go crazy watching people follow the leader without considering the facts, not mine or someone else's opinion. I like it when folks go to other sites (Speed Talk, Yellow Bullet etc.) to snoop around and learn. Bring what you have learned back here to teach a nut case like me.     

[Forzfed]

Many people tend to stick with what they know and never experiment.  I have friends that have PHd's in their field, and one that is currently working on his PHd.  I've been to the labs to see what he was working on.  His advisor told him what he was doing will never work, even though it wasn't his field.  He proved him wrong and reminded him of his comments, the guy did apologize.  He was telling me how pissed off he was.

I did mention to a few people what he was working on and I got responds of, "That can't work!  That defies the science behind it." 

But when your going for a PHd, you're in the research and development game.  You are the guy, it's not like you can ask someone.  There is a reason you're making $90-$120/hr or even more.  And he is one of the most grounded people I know, doesn't wear an engineering ring.  But he does have colleagues that resemble the Big Bang Theory.

[Forzfed]

I'm also surprised at just how rarely people mention that head flow really means dick on a turbo engine.   Granted, anything you do to decrease restriction is a net positive...    but there's no need to spend $1000s when a simple 1/2 turn will do the same thing. (until the combo is maxxxed out)

True dat!

[earlbrown]

I did mention to a few people what he was working on and I got responds of, "That can't work!  That defies the science behind it." 

That just means they didn't consider ALL the science.

After I started playing with solar heating and intermingling it with electronics you'd be amazed how many times I had to walk away, look at porn, and wait until all the data could swirl around and homogenize.   There are quite a few things that just don't make sense until you fully understand all the factors.



One thing I have noticed about the engineering types.   When they find something that works for them, they'd rather get hit in the head with a hammer than change the way they do things.

[daveismissing]

That just means you didn't consider ALL the science.

True, and thing get more subtle the deeper you delve.

One thing I have noticed about the engineering types.   When they find something that works for them, they'd rather get hit in the head with a hammer than change the way they do things.

Yep.

I work with rocket scientists (actually).
I often have to bring them back to earth (not literally)

[ttipe]

I'm also surprised at just how rarely people mention that head flow really means dick on a turbo engine.   Granted, anything you do to decrease restriction is a net positive...    but there's no need to spend $1000s when a simple 1/2 turn will do the same thing. (until the combo is maxxxed out)

True dat! Be advised that turning up the wick may increase air volume but probably reduces mass density (how tightly packed the air molecules are per unit of volume) since the air friction goes up so air temperature goes up. It's not just the amount of air you pump into the chamber but it's how easy you pump it in (larger unshrouded valves) and the efficiency of the burn process (chamber shape and position of spark plug within the chamber) and how much you reduce the tendency to knock (spark plug location within the cylinder & relational position to the valves).   

[motorhead]

This popped up today:
http://speedtalk.com/forum/viewtopic.php?f=1&t=744

[ttipe]

Ditto Ditto Ditto!!!! If you have a thumpin' little 6 without a turbo can you imagine what you have with a turbo!

[Forzfed]

This popped up today:
http://speedtalk.com/forum/viewtopic.php?f=1&t=744

Like I've mentioned in the past, my buddy's is friends with Kieth Wilson( Wilson Manifolds).  He would never make a manifold or modify one for a customer without the heads.  Kieth showed me a stage II manifold he made for PTE, with a price tag of $8k.  Just because your heads flow good doesn't mean your getting all the air in where it should be.  Isn't that the reason Jason made the power plate?  Because the factory setup flows a lot more air to the back cylinders.