It was our first attempt to video wet flow, we eventually got decent footage with different camera angle but things are happening so fast that it has to be slowed down in QuikTime to figure anything out.
Yeah, but the audio at the end was great . LMAO. I wish Smokey Yunick could have had today's video technology so we could have looked at the oil flow inside a running engine. Bet Smokey's audio would have been a little more colorful than, "Ho, ho, ho, ho". Keep at it, @Mummert , you'll get it right yet.
Oh yeah these videos are 3 years old or so back when we were on the 600hp or bust program. Getting closer
The “Farm guy” on you tube made a clear plastic cylinder head on a Briggs and Stratton flat head and you can watch the flame path when it runs.. slo mo is great. John’s video might be better with colored air sucked in as the valve opens and closes in very slow motion.
I think it would work better dry,,,,,,with smoke,,,,,,it would be more visible . I know I’m an idiot,,,,but I didn’t get anything from those videos . I have much respect for the Mummert group,,,,,,,they make beautiful Parts,,,,,,and it’s not even my brand . Tommy
Getting there, but camera needs to be locked down and possibly a polorizing filter. I would consider higher resolution too of course.
Truthfully there is no difference at all. The manifold side of the head is 28" higher than the cylinder side either way you do it.
I think we’re just not seeing what you are looking for/at. Maybe an explanation of your test method and what to look for would help us out. Edit: can you also explain the “manifold side is 28 inches higher” as well? I don’t understand that reference.
It just goes to show yah . . . us motorheads can get our talons into all sorts of different engines and they become an obsession to us. You're doing some great work - thanks for all you do. I've not built/run a Y-block yet, maybe some day . . . I'd run your heads if I did. I'm just as wacko about my dang flatheads and early Hemis . . . and pondering building a Buick Nailhead. I know - not the most popular engines these days, but a lot of fun!
More videos are coming if I can find that second sd card of the evolution. It should start helping you guys understand.
I think you’re going to learn more with some refined cfd models. The models we were using fifteen years ago were outstanding, and I’m sure they have progressed significantly since them. When I started in engine combustion development in the mid seventies, we had some high speed combustion films floating around in the engine lab. What I recall is that a transparent window was installed in the head, and high speed photography utilized to make 16mm films, that were played back in slow motion. All that stuff got trashed, as there wasn’t good documentation re the parameter changes between the various segments.
If you have the time and enough information to make accurate models you could be right. But sometimes its very interesting to be there with parts and the elements.
The final configuration camera angle and cylinder head. Good enough for 609hp and 510 ft/lbs out of 356 ci.
Yeah, wet flow is supposed to look the most correct around 70% of full lift. We back the test pressure down a bit just to settle thing a little.
So, my OT mill has 'Swirl Port' heads, no CD to watch, just specified "They Are!" Didn't seem so advanced to me, the way SBC guys were talking about 'em. I installed a 290* Comp cam and Rhodes lifters, matched ports on an Edelbrock RPM intake, 650 CFM Holley. My, that woke it up... Glad it did. Otherwise, I'd have waited for this^^^ movie...
The Jalopy Journal
