Coolest induction system video ever!

[jayb]

This is Jon Kaase with a plexiglass tunnel ram, watching the pulsing and fuel distribution in a race engine. 

https://www.youtube.com/watch?v=7Iq1B-2paCs&feature=youtu.be

[thatdarncat]

That is cool. I volunteer Steve P's finger for some testing. If I know you, you've already started on the plexiglass FE intake

[cjshaker]

If he shows up at the next EMC with mannequin fingers in his intake ports, I'm just going to quit

That is a cool video though. Lots more pulsating inside that short runner than I would have figured. Especially compared to what's visible at the bottom of the plenum.

[427Fastback]

That was pretty fricken interesting...I had no idea it would be that "wet"

[gdaddy01]

thanks , berry interesting

[machoneman]

Yes, berry, berry interesting! I'm amazed at the wetness, for lack of a better word, of the plenum where some pretty massive droplets and even sheets of gasoline accumulated. One would think that the draw of the valves opening/closing would sweep all those loose droplets and sheets down into the runners. Guess not!

[turbohunter]

The guy cracks me up.
Let's see what it looks and feels like if I stick my finger in there.
 "Out of the box" thinking indeed.

[jayb]

What gets me is the strength of the pulses; I had no idea they were that strong.  When I switched runner lengths of the intake on my SOHC, I saw a huge power increase at the engine speed of interest, so there was evidence that the induction tuning really has a major effect.  But to see Jon's finger snapping back and forth like that in the port really drives that point home.

[shady]

gives new meaning to the Visible V8. I think I would have stuck the trunk monkey's finger in the hole though.

[jayb]

That is cool. I volunteer Steve P's finger for some testing. If I know you, you've already started on the plexiglass FE intake

If I know Steve, he'd put his middle finger in there...

[ChiefDanGeorge]

Would be interesting to introduce some smoke of some sort to really see the flow pattern.

[Joe-JDC]

I have been trying to tell folks for years that there is reversion in nearly every part of the intake tract.  That fuel climbing up the walls is proof that the shape of the plenum is wrong on many sheetmetal intakes as well as the dual plane intakes.  There was even reversion in the exhaust port with a circle of fuel stains after the EMC challenge tear down.  Joe-JDC

[babybolt]

I would put some dye in the fuel, maybe red in one carb and blue in the other.   Sort of a democrat vs republican social mixer.

[turbohunter]

That fuel climbing up the walls is proof that the shape of the plenum is wrong on many sheetmetal intakes as well as the dual plane intakes. 

That is what struck me too.
As 427 said also, I was surprised at how wet it was.
Due in part to the necessity of building a non perfect plenum and runner set up in order to see it better I would assume.

[machoneman]

More of what I find interesting is that which isn't so obvious. It appears to be a straight valve Windsor engine, likely running Jon's special side-cant heads. Meaning likely 400 CID max and an engine type that DIDN'T bring Kaase Racing to fame.

One can bet he has done similar plexi-box testing, ad inifinitum, to his famed Boss 429 based monster motors of way over 800 C.I.D. Gaining knowedge here on near 8,000 rpm pure race engines with way over 1" lift  could easily mean a 100HP+ gain on 1,600-1,700 hp Pro engines. I guess as JDC hinted if one could eliminate reversion and make the liquid gas present more gaseous (finer?) one could pickup a lot of hp.

Put another way, I'd like to see the result of a similar tunnel ram test but with throttle bodies that only handle air and the fuel is added directly to the runners via injectors.....obviously EFI.   
If most of that wild fuel separation in the plenum now goes away, wouldn't we expect a fair hp increase, a sharper throttle, etc?