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john marcella · 12-10-2013, 12:45 AM

Quote:

Originally Posted by Chad Speier

What keeps a port from separating isn't weather it's square or round, it's all about the velocity gradient. Area is area, period. Doesn't know if it's round or square. But the gradient knows! And THAT is where power comes from. That's what keeps it attached.

You get the gradient correct, it WILL move air.

Separating from what?

Chad Speier · 12-10-2013, 12:47 AM

Quote:

Originally Posted by john marcella

Separating from what?

fuel, SSR, critical things that separate good from bad ports.

john marcella · 12-10-2013, 12:51 AM

Quote:

Originally Posted by Pont428

Really? So, what does a valve/stem guide do?

What does making the push rod encroachment into the port side do?

What does making the port into dog legs instead of straight to the valve face do?

Add them all up, what do you get net/net?

Valve and stem = necessary evil

As for the rest= not necessary if designed correctly and just plain hurts power potential

Elarson · 12-10-2013, 12:51 AM

My engine is totally powered by unburnable dribble.

Eric

john marcella · 12-10-2013, 12:56 AM

Quote:

Originally Posted by Chad Speier

fuel, SSR, critical things that separate good from bad ports.

Are you saying air flow from SSR , I say impossible, but who cares what I think LOL.

john marcella · 12-10-2013, 01:00 AM

Quote:

Originally Posted by Elarson

My engine is totally powered by unburnable dribble.

Eric

If you are Alcohol little different story.

And it is only a percentage of the fuel that would be affected , but still enough to influence power.

Elarson · 12-10-2013, 01:02 AM

Quote:

Originally Posted by john marcella

If you are Alcohol little different story.

And it is only a percentage of the fuel that would be affected , but still enough to influence power.

Blown nitro....lots of liquid fuel.

Eric

john marcella · 12-10-2013, 01:16 AM

Quote:

Originally Posted by Elarson

Blown nitro....lots of liquid fuel.

Eric

LOL, That chit don't count.

I use to do Top Fuel CYL head repair for most of the NHRA teams from 1997- 2002 when I worked for this one company. What's kind of funny is just how little the cyl heads importance was. You could have an old clapped out set of heads vs a new perfect set and that chit would run the same number.

More blower and more fuel!!!!!!!!!!!!

Chad Speier · 12-10-2013, 01:45 AM

Quote:

Originally Posted by john marcella

Are you saying air flow from SSR , I say impossible, but who cares what I think LOL.

Your saying air can't separate off the ssr?

pastry_chef · 12-10-2013, 01:47 AM

Comments posted on tunnelport by Darin going back to 2006
http://speedtalk.com/forum/viewtopic.php?f=1&t=3396

I really like the July 3rd "Disney land" comment by Darin, results to date prove Darin was right!

related comment by Lynn last year - July 20, 2012

Quote:

Originally Posted by NHRASuperStock455SD

The new RAV engine being done must be 2.9HP per cubic inch to be on top 2.7 to be competitive. With our existing ports 2.7 for this engine is very capable, we must work very hard to get 2.9.

Reference
http://forums.maxperformanceinc.com/....php?p=4687111

john marcella · 12-10-2013, 02:11 AM

Quote:

Originally Posted by Chad Speier

Your saying air can't separate off the ssr?

Yup, not with the curtain area at the valve that is at the SS vs the plug side. And it is also the first available path for the air to satisfy the depression.
I say no way!

Chad Speier · 12-10-2013, 02:15 AM

Quote:

Originally Posted by john marcella

Yup, not with the curtain area at the valve that is at the SS vs the plug side. And it is also the first available path for the air to satisfy the depression.
I say no way!

Ok.. so you can have it abrubt and or shaped wrong and it will still stay attached?

john marcella · 12-10-2013, 02:17 AM

Chad, your a air speed guy. Why is the air speed always faster on the floor near the SS ?

Chad Speier · 12-10-2013, 02:21 AM

:

Quote:

Originally Posted by john marcella

Chad, your a air speed guy. Why is the air speed always faster on the floor near the SS ?

Its not. Especially when I'm done.

but even then that doesn't mean it's stuck. The roof is just as important.

john marcella · 12-10-2013, 02:22 AM

Quote:

Originally Posted by Chad Speier

Ok.. so you can have it abrubt and or shaped wrong and it will still stay attached?

Then its just in the way.

Chad Speier · 12-10-2013, 02:24 AM

Quote:

Originally Posted by john marcella

Then its just in the way.

So just mow it down and get it out of the way?

john marcella · 12-10-2013, 02:26 AM

Quote:

Originally Posted by Chad Speier

:

Its not. Especially when I'm done.

but even then that doesn't mean it's stuck. The roof is just as important.

I would like to see this.

john marcella · 12-10-2013, 02:27 AM

Quote:

Originally Posted by Chad Speier

So just mow it down and get it out of the way?

LOL its not like that and you know it.

Chad Speier · 12-10-2013, 02:30 AM

Quote:

Originally Posted by john marcella

I would like to see this.

The center of the floor is the fastest. My goal is to keep the spped as close to the same as possible. Keep the roof as fast as possible. Kick the wal over. My 2.125 valve SBC has a 2.200 bowl.

john marcella · 12-10-2013, 02:43 AM

Quote:

Originally Posted by Chad Speier

The center of the floor is the fastest. My goal is to keep the spped as close to the same as possible. Keep the roof as fast as possible. Kick the wal over. My 2.125 valve SBC has a 2.200 bowl.

OK

Hey im not trying to say you're doing it wrong, we are probably doing this more similar than we think.
I know my stuff makes power as well as yours. How we get there is not important.

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