Playing with cylinder heads.

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MOPAROFFICIAL

MOPAROFFICIAL

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Let's play with cylinder heads.
I found an old unusable 587 head someone had destroyed..and so I ground a 2.02 tulip valve that has a tiny 30 backcut into it and thought I'd just widdle at it and play with some dykem...like wet flow but not but like, well..
Why? Just because. Felt like ventilating a j head maybe for the sake of more work on some that are already flow huge and I wanted to see the turbulence effect the suspended liquid. The heads were 'ported @1.88 by who the heck knows. They went to the 45 doing it... so some short at the very top was not there .. but it does [email protected] then [email protected] and [email protected].
Remarks..
It yanks at the dog leg.
If you flow all the straight halfway in if picks up a hair.
If you lay your hand flat at the roof it picks up a few cfm as well.
It only used up an hr.
That's the report card so far for this junk.
72
142
200
241
255
243
235
See it just pulled off the floor before the turn down and then fly out the far side.
There is much that can be done still, though it wasn't the best starting point as a someones previously aborted core.
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Bumps jumps on the straight wall, that's going.
Open chamber a none issue, barely a spritz.
See I knicked the seat...it's just for flow experimenting.
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Just leaves it behind once it gets too fast/turbulent.
 
Very cool !! Im running those heads on my 360 I ported them and had a valve job. They seem to be decent heads for a street car
 
Rat Bastid said:
Nothing around the short turn. Interesting.
Click to expand...
Always.
This was done with the port turbulent.
Higher lifts line of sight takes over and it goes across the valve and far side chamber.
Only one side is working though.lol
 
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Smoke
The 1st trail is at full turbulence and you can see the smoke shoot the ssr /straight side and follow the wall to the far side bowl. That's the path of the dykem in post 1.

Watch the valve close some into stable air and then see the smoke take a more uniform path around the stem down the ssr.


Keep in mind smoke is not fuel and doesn't wet the port like fuel would. There is probably a better test with rapid valve open shut .100 to .400 then .200-.500 but would need a constant mist of dykem for a 10 second type of run.
 
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Rat Bastid said:
Nothing around the short turn. Interesting.
Click to expand...
The ssr isnt done or right yet. If I hit water oh well.lol
Moved the wall another .025 near the head bolt and into the bowl and .010 off that part of the high ssr 257cfm after .500, cradle the air at the roof 'flat of your hand' and it's tapping dancing to 264cfm
 
I mounted intake & all, then kept dusting flour over the top, while taking high resolution video-tape through the clear cyl., at all lifts & with the valve removed & inserted stem down....& that at diff deltas....I like Your witness dye technique.....
 
Killer6 said:
I mounted intake & all, then kept dusting flour over the top, while taking high resolution video-tape through the clear cyl., at all lifts & with the valve removed & inserted stem down....& that at diff deltas....I like Your witness dye technique.....
Click to expand...

When the engine is running the entire tract is wet with fuel, like you see in videos online the way it shifts back in forth with every pulse/cylinder/intake stroke. So this is neat but I think the weight of the ink vs fuel and that wetting are factors discluded in this test..but I think its showing enough of what we already know of turbulence and detaching from the ssr at higher lifts. The air will pull a string hard to the dogleg wall/ssr..but flicking of the dykem brush shows it going the straight side and shooting/skipping the ssr to the far side and not the dogleg . I'm going to shape the turn some more. It's the middle that detaches in the smoke test at around .550 lift. I will test a non turbulent lift, like .200/.300/.400 to see where the dykem trails then. I bet we see it other places we arent currently.. but we'll see.
Heres the trend from another site on this topic. Depicting how the upper lift goes the far side while the lower lift goes the short turn.


images.jpeg.jpg
 
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Are You monitoring swirl along the way, or just focusing on the wet-flow path atm?
 
Killer6 said:
Are You monitoring swirl along the way, or just focusing on the wet-flow path atm?
Click to expand...
I have no swirl meter.
On the bench the dykem tracks toward and behind the spark plug. The ports dogleg combined with the bore is going swirl it in the chamber, like corkscrew across, compresses lights ,exhausts . That's the direction. But the incoming air/pressures diff cause vortexes and funny things happen with burn/flame travel. I wish I knew everything, but I don't. Lol. It's really amazing what you see and learn with a flow bench and building experience..tear down experience.. notably to visually varify ..and to have people like Darren Morgan sharing and explaining some things. Anyhow When you watch the smoke when in stable air speeds it's going straight and parting and hanging left...damnI really need to clean my flow pipe. I need to clean my garage out while I'm at it. Gonna do some 906 heads and a slant head after I get done with this and the 318 302 vid. That's in between work and work.

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When I talked to Bruce the other day he told me he started printing out swirl meters with his 3D printer. I asked him how much and he said he may send me one to test. I know nothing about them but I guess I can always start reading and learning again.
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And to think in 10 years we won't be worrying about swirl, but how to make electric motors spin faster....
 
MOPAROFFICIAL said:
I can do this with a speed master and probably see the same thing. You can too on your same bench.
Summit has dykem pretty cheap.
Do you have a seat grinder setup yet?
Click to expand...
Yeah, I have a regular old souix grinder, and I have the goodson 3D setup on my seat and guide machine also
 
Well maybe it does. Some valves out of some ported j heads that flowed over 270cfm next to the tulip dykem test valve. This time it's at .200 lift.... no dykem on the ssr.
Did a stock port too... no dykem on the short turn. Straight path is what the heavier fuel follows.

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See the the fuel wash that side of the valve.
 
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