Porting an iron head is like rolling a large rock up a steep hill, just buy some aftermarket heads. Your time is worth more than ported iron OEM heads.
this guy 37 sec in porting definition with nho idea of its base meaning porting is an optilination of the design . you are trying to increase the natural cartistics while keeping your post speed 300-320 fps referred as mean velocity this and cam profile and the torque curve will climb and carry over a long rpm range basically the air has a inherent path it try's to use you optimize thru the bowl and chamber the cfm no.s want mean dick if the port stalls
Sadly from 2030 on all combustion cars including classics will be banned from public streets in entire EU and Scandinavia :-( In Germany the Green Peoples Party gave order to shorten fuel supply from 2025 on by reducing all conventional fuel stations to only one state operated central gas station per city or county. Now they even want to slow down all the gas pumps from 20 litre per minute to 2 litre per minute...From 2027 on in the EU certain car spare parts will be banned too....as exhaust systems, turbo chargers and even some engine and gearbox oils...California and New York will do the same from 2027 on.... So no investments should be done in oil burning cars any longer....They even created a new kind of crime here, called emissions and smoke crime. "Bundesabgasbespaßungsverbot" in German....((((!
Wil this work for diesel engines? Also, for a diesel it’s just air. Does it make a difference if you polish the runners? Since only air is moving through the intake?
I’m a sucker for punishment, landcruiser 4500 straight six yep the 24 valve monster, covig pacing myself, surprisingly I was astonished how poor the mismatch was of the intake manifold at the halfway thru chamber split flange, and the cast iron EX manifolds were about 3-4mm off-set also, at lapping stage but giving the rattle fatigue hands a rest haha, what can’t hear you, gone a bit deaf too, my dumb. What s that smoke coming out of my electric drill. Ah well , at least you confirmed I got the engineering part done good,🕺🏼
So what kind of upgrade should you do to the bottom. If any and or will it wear the engine faster ... you find the manifolds with ratings on them or just keep the stock one with the stock heads ? And the big manifolds are for the nice heads? And or for bigger block?
Take this as a beginner's guide. This was made 7years ago, even then all the gibberish could be laughed at. E.G to make it clear. Port size is not the key, a smaller port size can flow more air because of velocity.
Very interresting video, thank you for sharing, I am just wandering what the valves size difference will do to the flow, or reciprocity ? It will be interrested to see a test on ported heads. I just wander if big valves are making more power particulary on the exhaust side. in another words will it also make a difference from the size between them ? 49/38 or 49/40 or 51/40 ? Great video Thanks for your time Konstantin
Great job on explaining even cutting those extra heads gives people an idea what it looks like with the water jackets. I usually do a light sand blasting in intake and combustion chamber just to keep the mixture but my exhaust is like a mirror... Myself I have straight and 90% angle grinder and dermal tools as well for the sanding drums and about 20 different burrs.. don't forget ear plugs.. I usually soap and water wash with small 1/2" paint brush wash them out the blow air dry.
Would it help to gasket match and port the head on my 1980 Mercedes 300 Diesel. Any substantial power increase to keep pace with the traffic especially on the highway would really help.
So, the people who make gadgets, fully understand the port size and shape you need for the specific performance parameters you are aiming for? That argument is totally wrong.
Race engines are also often small such as our 2L T making 680hp or 5L making about the same. In particular the 5L NA, head porting and induction design is extremely critical. It needs to make high ave hp across the rpm range. It amazes me that 57 people thumb this down. What is they disagree with given the video is factual?
That comparison with how water condenses on a mirror doesn't make any sense at all. When or how a vapor condenses into a liquid has nothing to do with the smoothness or roughness of the surface it condenses on, that is determined purely by the temperature of the surface. What's more, water condensing on cool glass is completely incomparable to fuel vapor flowing at high speed through high-temperature metal passageways. The reality is that the fuel vapor flowing through the intake and valves is going WAY too fast for it to have time to condense and sit on a surface. The vehicle would have to be extremely cold for that to happen. Even if your reasoning made sense, an "as cast" surface would create a lot more drag on the vapor, giving it even more likelihood to be caught and condense into liquid. And even still, the liquid fuel would be much more likely to get trapped and sit on a rough, cast surface, and cause rust rather than easily rolling on a polished surface. The purpose of polishing is to create an extremely low-friction surface for the vapor to flow through at the highest, most efficient speed. There is literally no drawback to polishing the intakes on a cylinder head, unless you screw it up and gouge the valve seats or do something else really dumb
When you gasket matching the intake and outlet manifold I found to dowel the manifold and gasket. If you do not do it I found the gasket is slipping down then you do not get a perfect match.
3 rules to porting..air speed air speed and more air speed
Can u just port ur stock heads and intake
Excellent explanation! God bless you
Been awhile 👍
Don’t remove material off the floor of the port, you’re slowing the air down..
Porting an iron head is like rolling a large rock up a steep hill, just buy some aftermarket heads. Your time is worth more than ported iron OEM heads.
Dykem blue or spray paint works wonders for scribing you port openings…you’re welcome.
WD40 on your carbide cutters works wonders, cuts faster and resists loading up the cutter. You can use candle wax as well, you’re welcome.
How does gas drops stick to the walls when the engine is running and 240-300 cfm is moving through the port?
this guy 37 sec in porting definition with nho idea of its base meaning porting is an optilination of the design . you are trying to increase the natural cartistics while keeping your post speed 300-320 fps referred as mean velocity this and cam profile and the torque curve will climb and carry over a long rpm range basically the air has a inherent path it try's to use you optimize thru the bowl and chamber the cfm no.s want mean dick if the port stalls
Thanks big-dawg! I learned so much! 🤟🏿👌🏿💯
Sadly from 2030 on all combustion cars including classics will be banned from public streets in entire EU and Scandinavia :-( In Germany the Green Peoples Party gave order to shorten fuel supply from 2025 on by reducing all conventional fuel stations to only one state operated central gas station per city or county. Now they even want to slow down all the gas pumps from 20 litre per minute to 2 litre per minute...From 2027 on in the EU certain car spare parts will be banned too....as exhaust systems, turbo chargers and even some engine and gearbox oils...California and New York will do the same from 2027 on.... So no investments should be done in oil burning cars any longer....They even created a new kind of crime here, called emissions and smoke crime. "Bundesabgasbespaßungsverbot" in German....((((!
Clearest porting tutorial yet. Many thanks.
I wish I watched this before most likely destroyed my head
This is explained very well - thank you! I think I've been doing it wrong.
This is the best tutorial I have ever seen on porting Thank you so much.
Wil this work for diesel engines? Also, for a diesel it’s just air. Does it make a difference if you polish the runners? Since only air is moving through the intake?
Literally halfway done porting a set of aluminum heads with a drill. Oh well lol
მალხაზ, სხვა ვიდეოებიც ხომ არ გაქვს ამ თემატიკაზე? არც ისე ბევრია მსგავსი ხარისხის მასალა ონლაინ და თუ რამე გაქვს დამატებით, სიამოვნებით გავიზიარებდი
"bacics" lmaoo
So cut the heads in half to make it easier to port?
Dykem blue?
Flow has more to do with cam size than it does cubic inches!!
so basically if you turbo a car like im gonna do to my v6 ecotec. i should port my heads then?
Awesome! Pure common sense, right?
I’m a sucker for punishment, landcruiser 4500 straight six yep the 24 valve monster, covig pacing myself, surprisingly I was astonished how poor the mismatch was of the intake manifold at the halfway thru chamber split flange, and the cast iron EX manifolds were about 3-4mm off-set also, at lapping stage but giving the rattle fatigue hands a rest haha, what can’t hear you, gone a bit deaf too, my dumb. What s that smoke coming out of my electric drill. Ah well , at least you confirmed I got the engineering part done good,🕺🏼
Wow! Thank you so much for your tutorial. Well explained for the person that has never done this before. All the very best to you. John.
You are a great teacher thank you so much for the video this was Eazy to understand
Awesome video
say arnt you the owner and engine designer of badass engines if you are then you have an excellent site thankyou
So what kind of upgrade should you do to the bottom. If any and or will it wear the engine faster ... you find the manifolds with ratings on them or just keep the stock one with the stock heads ? And the big manifolds are for the nice heads? And or for bigger block?
Take this as a beginner's guide. This was made 7years ago, even then all the gibberish could be laughed at. E.G to make it clear. Port size is not the key, a smaller port size can flow more air because of velocity.
looks like the 38 exhaust is even marginaly better Very interresting test Thank you
Very interresting video, thank you for sharing, I am just wandering what the valves size difference will do to the flow, or reciprocity ? It will be interrested to see a test on ported heads. I just wander if big valves are making more power particulary on the exhaust side. in another words will it also make a difference from the size between them ? 49/38 or 49/40 or 51/40 ? Great video Thanks for your time Konstantin
You forgot ear protection, some of the die grinders are like screaming banshees😱
Ahh, ears mentioned 👍
Heligrams? Are you talking about 28” Hg? Hg stands for mercury.
Great job on explaining even cutting those extra heads gives people an idea what it looks like with the water jackets. I usually do a light sand blasting in intake and combustion chamber just to keep the mixture but my exhaust is like a mirror... Myself I have straight and 90% angle grinder and dermal tools as well for the sanding drums and about 20 different burrs.. don't forget ear plugs.. I usually soap and water wash with small 1/2" paint brush wash them out the blow air dry.
VERY BEST VIDEO! Great for the people that build street Rods. Thanks
im giving thanks to the people that do cylinder head cut aways for educational purposes, it must be a hellacious task
Would it help to gasket match and port the head on my 1980 Mercedes 300 Diesel. Any substantial power increase to keep pace with the traffic especially on the highway would really help.
Thanks for the video. Porting my tine 231 3800 Series heads, need all the flow I can get cause I will be pushing it to 550 WHP.
Thanks so much. Very well done,and informative.
So, the people who make gadgets, fully understand the port size and shape you need for the specific performance parameters you are aiming for? That argument is totally wrong.
Thanks for uploading. Very well explained, i did not have to go back at all. Much appreciated and helped to understand the process clearly.
Race engines are also often small such as our 2L T making 680hp or 5L making about the same. In particular the 5L NA, head porting and induction design is extremely critical. It needs to make high ave hp across the rpm range. It amazes me that 57 people thumb this down. What is they disagree with given the video is factual?
That comparison with how water condenses on a mirror doesn't make any sense at all. When or how a vapor condenses into a liquid has nothing to do with the smoothness or roughness of the surface it condenses on, that is determined purely by the temperature of the surface. What's more, water condensing on cool glass is completely incomparable to fuel vapor flowing at high speed through high-temperature metal passageways. The reality is that the fuel vapor flowing through the intake and valves is going WAY too fast for it to have time to condense and sit on a surface. The vehicle would have to be extremely cold for that to happen. Even if your reasoning made sense, an "as cast" surface would create a lot more drag on the vapor, giving it even more likelihood to be caught and condense into liquid. And even still, the liquid fuel would be much more likely to get trapped and sit on a rough, cast surface, and cause rust rather than easily rolling on a polished surface. The purpose of polishing is to create an extremely low-friction surface for the vapor to flow through at the highest, most efficient speed. There is literally no drawback to polishing the intakes on a cylinder head, unless you screw it up and gouge the valve seats or do something else really dumb
This program was brought to you by Edelbrock....
I ported the heads on my 52 flathead and now she's cranking out 97hp at the crank
When you gasket matching the intake and outlet manifold I found to dowel the manifold and gasket. If you do not do it I found the gasket is slipping down then you do not get a perfect match.
I was hoping he would cover valve shrouding.