I think a better wet bench would pull the vacuum from the bottom of the cylinder. It would have a plexiglass cylinder and the exhaust valve would be closed. That way you could view the actual flow of the mixture down into the cylinder from any angle around the sides of the intake valve. That's what you really want to see right ? If flow always went straight from the intake to the exhaust there would be no such thing as a "shrouded valve" right ?
Shrouding refers to the proximity of a valve to the combustion chamber or cylinder bore the easiest wet flow is to get spray dykem on a regular flow bench and squirt it in the port and check the helix down the bore and where the dykem collects at different vavle lfts and sometime pressures.
I don't think wet benches really duplicate what's going on enough to be useful.
On the bench the flow is straight from the intake to the exhaust. In a running engine the descending piston creates a monsterous vacuum that yanks the flow past the intake and down the chamber. That is so different than this. Plus the strong vacuum can actually shred or even cavitate the air/fuel mixture.
Introducing a liquid in the airstream only screws up the airflow measurements.
@flyboy3633 'introducing a liquid in the airstream only screws up the airflow measurements.' don't you think the effects of liquid in the air might better reflect the fluid mechanics of a carburated engine? Just a though, I'm not bashing you.
Is the green stuff supposed to be fuel flowing from the intake valve to the exhaust valve? or is it air flowing? is it showing both valves been open at the same time just flowing or is it so fast that we cant see the valves moving?
ok flow benches pull vaccume in the combustion chambers and you can probe your port for turbulance or check peak cfm and check flow at various valve lifts and all sorts of things. they have been doing it for a long time but recently wet flow benches became popular now they run this colored fluid through the ports to mimic fuel all this is for development and improvements.
@460ciford good on ya buddy,you do know what you're talkin about,internal combustion engines ain't rocket science,but common sense is needed..
Aussieheads1 9 months ago
PURPLE!!!!!!!!!!!!!!!!!!
circutracer150 1 year ago
uhm what the fuck did i just watch?
RunNoobRunProduction 2 years ago 4
@RunNoobRunProduction
gear head porn
michaelovitch 1 year ago 5
I think a better wet bench would pull the vacuum from the bottom of the cylinder. It would have a plexiglass cylinder and the exhaust valve would be closed. That way you could view the actual flow of the mixture down into the cylinder from any angle around the sides of the intake valve. That's what you really want to see right ? If flow always went straight from the intake to the exhaust there would be no such thing as a "shrouded valve" right ?
flyboy3633 2 years ago
Shrouding refers to the proximity of a valve to the combustion chamber or cylinder bore the easiest wet flow is to get spray dykem on a regular flow bench and squirt it in the port and check the helix down the bore and where the dykem collects at different vavle lfts and sometime pressures.
riflemanjim 2 years ago
I don't think wet benches really duplicate what's going on enough to be useful.
On the bench the flow is straight from the intake to the exhaust. In a running engine the descending piston creates a monsterous vacuum that yanks the flow past the intake and down the chamber. That is so different than this. Plus the strong vacuum can actually shred or even cavitate the air/fuel mixture.
Introducing a liquid in the airstream only screws up the airflow measurements.
flyboy3633 2 years ago
@flyboy3633 'introducing a liquid in the airstream only screws up the airflow measurements.' don't you think the effects of liquid in the air might better reflect the fluid mechanics of a carburated engine? Just a though, I'm not bashing you.
TheRoastedPeanut 11 months ago
Is the green stuff supposed to be fuel flowing from the intake valve to the exhaust valve? or is it air flowing? is it showing both valves been open at the same time just flowing or is it so fast that we cant see the valves moving?
jasaircraft 3 years ago
looks like 2 valves not opening
bkfill 4 years ago
...
aaron9696024 3 years ago
What is that? I don't understand it.
aterminatorz 4 years ago
ok flow benches pull vaccume in the combustion chambers and you can probe your port for turbulance or check peak cfm and check flow at various valve lifts and all sorts of things. they have been doing it for a long time but recently wet flow benches became popular now they run this colored fluid through the ports to mimic fuel all this is for development and improvements.
aaron9696024 3 years ago
That makes sense but I don't see anything flowing
MoPar7055 3 years ago