@tankjr85 You put the valves back in and do a test were u use a measuring cup and u fill up each port and whatever is left in the measuring cup is your final measurement so you have to get the same reading on each port..hope that made sense:)
On the rough surface you will not be able to form droplets of fuel, because the structure creates a small turbulence when air flowes. This is only important where fuel/air is present, air flow can be polished and shined, this will increase air speed. My injectors all open at the same time once pr. crankshaft rotation. Injectors that open just before the intake valve opens is not so critical to the intake structure, while the fuel will not stay in there for so long.
As in your experiment the liquid ran off of the smooth surface, this will run into the cylinder still in liquid shape and therefor not be burnt in the right time. Only atomised fuel burn in the combustion chamber. On the rough surface the fuel will settle in the structure, if the surface is not hot. That is why cold engines require more fuel, as most of it settles on the cold intake and cold cylinder walls.
If you don't know what to do you should leave it alone. Making ports bigger can be sometimes be a very bad decision. It's all in the flow speed. Big port channels might flow more air in the flow bench, but they don't always actually mean better performance. Smaller and right shape ports have greater flow speed thus making more power everywhere. Let alone combustion chamber design too..
Some heads require smaller intake ports like many bike heads.
Hope he gets the intake surface glass-blasted. Otherwise it should be left alone. Nice polish walls collects fuel, droplets that DECREASE performance. When I take a cylinder head apart, I blast the intake-valves, to increase performance!
These guys are smart, low investment, make it shine ,and get paid. Their shop will be there forever. With all this new flow and porting equipment, the only ones getting rich are the manufactures of the equipment, the shops usually go under, and the equipment goes on EbAy.
we italians are so smart that we don't need a flow bench, and however the good tuner put the head on the flow meter every bit of porting to ensure that he is proceding the right way, at the end it is usefull only to say "look! now is better"
And i thought that was Dustin Hoffman before he was a movie star. Oops
ParaConMan 2 months ago
what is this
da1stegr 3 months ago
this is the worst shop
JohnxWaynexGacy 9 months ago
the pants,the finger nails, the shirt, the hair, the cig, this is a detail pro.
technotommy72 1 year ago 4
Comment removed
seasonedtoker 1 year ago
Perhaps he flow tests it with the smoke from his cigarette
allaussiedownunder 1 year ago
Horrific
alfistii1 1 year ago
The stupid cameraman talking shit and distracting the guy. Italians, blé.
Idonteatdog 1 year ago
This has been flagged as spam show
Take this experiment one more step and simulate the environment in the ports.
What you miss is airflow. Airspeed in the ports and runners is high.
Now, take some fuel and apply it to a piece of glass and to a sheet of sandpaper. Use an air duster gun to simulate airflow and try to blow it off.
The difference speaks for itself. Even with a very fine sandpaper.
fantaomet 1 year ago
This has been flagged as spam show
@matt12466
Take this experiment one more step and simulate the environment in the ports.
What you miss is airflow. Airspeed in the ports and runners is high.
Now, take some fuel and apply it to a piece of glass and to a sheet of sandpaper. Use an airgun to simulate airflow and try to blow it off.
The difference speaks for itself. Even with a very fine sandpaper.
fantaomet 1 year ago
Comment removed
fantaomet 1 year ago
vaya uñejas jejeje
josevhornett 2 years ago
how do you know if every cylinder has the same air flow?
tankjr85 2 years ago
@tankjr85 You put the valves back in and do a test were u use a measuring cup and u fill up each port and whatever is left in the measuring cup is your final measurement so you have to get the same reading on each port..hope that made sense:)
91DAintegraB20 1 year ago
fiat uno testa kkkkk
tacochristiane 2 years ago
On the rough surface you will not be able to form droplets of fuel, because the structure creates a small turbulence when air flowes. This is only important where fuel/air is present, air flow can be polished and shined, this will increase air speed. My injectors all open at the same time once pr. crankshaft rotation. Injectors that open just before the intake valve opens is not so critical to the intake structure, while the fuel will not stay in there for so long.
Turbotrip 2 years ago
As in your experiment the liquid ran off of the smooth surface, this will run into the cylinder still in liquid shape and therefor not be burnt in the right time. Only atomised fuel burn in the combustion chamber. On the rough surface the fuel will settle in the structure, if the surface is not hot. That is why cold engines require more fuel, as most of it settles on the cold intake and cold cylinder walls.
Turbotrip 2 years ago
is it easy to port heads,or is it harder than it looks
qpzmak 2 years ago
If you don't know what to do you should leave it alone. Making ports bigger can be sometimes be a very bad decision. It's all in the flow speed. Big port channels might flow more air in the flow bench, but they don't always actually mean better performance. Smaller and right shape ports have greater flow speed thus making more power everywhere. Let alone combustion chamber design too..
Some heads require smaller intake ports like many bike heads.
makexxx 2 years ago
good info...
if you read performance tuning in theory and practice, you can learn a shitload about heads and porting
Transane 2 years ago
Hope he gets the intake surface glass-blasted. Otherwise it should be left alone. Nice polish walls collects fuel, droplets that DECREASE performance. When I take a cylinder head apart, I blast the intake-valves, to increase performance!
Turbotrip 2 years ago
These guys are smart, low investment, make it shine ,and get paid. Their shop will be there forever. With all this new flow and porting equipment, the only ones getting rich are the manufactures of the equipment, the shops usually go under, and the equipment goes on EbAy.
Coolride17 2 years ago
ok..ok. Emilio, if driving the roach coach is not your cup of tea, then at least change the area your working on so you dont hit water..
xtremech 3 years ago
malditos argentinos basuras
saramilena 3 years ago
como ? cual es tu problema ?
pablo1588 2 years ago
Holy crap Emilio....better go back to driving roach coaches
xtremech 3 years ago
flowbench ? thats what the smokes in the mouth for is'nt it?
miniman1965 3 years ago
Very ghetto.
spartanic 4 years ago
huahuahuah nice job
astralover 4 years ago
hmm, wheres his flowbench?
daniellee1277 4 years ago
you put it on the flowbench when you finish you dolt.
JgHaverty 4 years ago 6
we italians are so smart that we don't need a flow bench, and however the good tuner put the head on the flow meter every bit of porting to ensure that he is proceding the right way, at the end it is usefull only to say "look! now is better"
Terminchiator 3 years ago
rofl :D Tell that to ferrari ;)
JgHaverty 3 years ago
Unsupervised friends of the shop, probably.
excelsior415 4 years ago
doing it with a cigarette. Thats the way. This guy is very professional!
marek0086 4 years ago
no mask? i bet your lungs soon to be ported also!
merla118 4 years ago
its aluminum, not asbestos kid
JgHaverty 4 years ago 2
He's been working on that for awhile now. See the cigarette?
TrainingPeralta 3 years ago 8
a miche fatte n'artro goccio!!!!
Marco M3
domtoretto1 4 years ago