My question is since youre removing such little bit of material like on the 2, 3, 4 holes (left to right of camera) is it really worth your time and effort?
Good video covering the basics. Nice to see it after many years of reading about it. As to "rgmathers", all those years of experiance haven't taught you how to be decent to other people. I don't care if you wrote the book on head porting, your initial post is uncalled for. There is nothing wrong with this video, it just covers the basics.
@sabledriver once again I apologise to Anthony, I tried to make my point in a very poor way, it was truely not my intent and as you can see I told anthony how sorry I am for presenting myself in that manor and your right its not a bad video. By the way I didnt write the book....I just had a captain ass hole attack.
A couple things I would like to add is to match the port on the manifold for best results and try not to nick the gasket surface as that of course can cause a leak. Also practice on a junk head first as you learn how to ontrol the amont of metal you are taking off. I personally like the highest speed possable so it takes less force to remove the metal and it also leaves a smoother surface but this all depends on the material of the head. Bottom line I guess is practice making it smooth.
forgive me for calling you an idiot, it was rude of me.
As to who I am, I have been it the automotive field for over 35 years, I started out turning wrenchs and the ran many many shops, and taught automotive technology for most of 15 years. I also was head of the engines department and taught airflow dynamics and performance. For what its worth I am also A.S.E. certified. Please feel free to contact me again.
@rgmathers This is not a pissing match my friend. Just showing folks how to do the basics at home. When I am working on real performance stuff, this obviously isn't the route I would take, nor have I. I have built a couple 400+HP subaru wrx blocks & 2 dodge 440s, so I know a little about airflow dynamics. I'm no expert, but I try to help those out who know nothing of it. So please keep the rude comments away. Do us a favor and make a better video, instead of being rude.
@rgmathers Are you not suppossed to leave the low velocity areas to maximise a swirling effect to help pull out the gasses and reduce the pulses going back to the combustion chamber ?
@RCMACSPEED I guess as a rule I am not that concerned with the exhaust as I am with the intake as sucking air in is harder then blowing it out. But as far as reducing back pressure is concerned, valve overlap as well as exhaust configuration are the areas that look at the most. this is just a generasation as there are so many opinions in this area. david vizard probably explains it better then I do as he has studied air flow dynamics exstensivly and knows about a thousand times what I know. :)
@RCMACSPEED yes I regard him in the same way, He has not only worked big bore engines but small as well, his mini actually beat an F1 car!! in the hill climb. he is located in tucsan AZ. I believe and he will answer any question anyone has. I have studied most of the great ones,Jenkins,unich,Landy,but david has always made the most sense to me in his approace to performance. by the way great suspension film very cool. seems you know your art well. I enjoy intellectual diversion.
@rgmathers I agree on the importance of good intake airflow, but I'd encourage others not to underestimate the importance of the exhaust side. It is very important to be able to get the exhaust gases out quickly. When doing this kind of work I like to simply clean up and polish the intake ports, not really open the up. There smaller but smooth intake ports mean high air velocity=low end torque. The exhaust ports however being smaller usually benefit greatly from being opened up.
@gunforme I agree with much of what your saying. I don't Like to really open up the intake ports as it slows down air and velocity is what its about. I just smooth and blend, I have friends that re shape ports and such but that is above my skill level. It is so hard to explain all of this in just a few words. I agree, the smaller the intake port the better low end torque will be but as usual it all depends on what you want the engine to do.
Very nice, methodical tutorial! How much of a horsepower increase would you typically expect, percentage-wise, from port matching on a typical v8 fuel injected motor? How about fuel efficiency?
To make the gasket marking the same & doesn't move try bolting it down with some spacers. The gasket you are using has alot of leway & movement, not easy to successfully match all ports the same.
@staticxmako All the brands of gaskets are going to produce a gasket that is the same size. They have to be "standardized" due to OEM and OE specifications. Aslong as you buy a product that is OE or OEM then you will be in great shape.
@DIYautotech I have purchased two different gaskets in the past and they were slightly different from each other. I had purchased one, I believe it was a Felpro, and I used it to gasket match a intake and cylinder head. Later when I went to do some work and change the gaskets I purchased another which was a little different and didn't match up quite the same. I took it back and got a different one of course. I believe that is why some choose to port match rather than gasket match.
@3NOSHITSHERLOCK3 You are infact very incorrect in your statement. I have ported many heads and "Port Matched" even more. Almost EVERY time you place the gasket up to its mating surface, you'll notice it does NOT match up perfectly. This is also true for both the intake & exhaust manifolds. Do no be ignorant, knowledge is power my friend, learn to use it.
I take it you have to do this on the exhaust manifold aswell? otherwise if it was the same as the cylinder head was before doing this would do nothing
@HOYS Remember Hoys that this isn't a cylinder head porting, this is just PORT MATCHING. As for nicking the bit on the gasket surface, that only happened once, and it ONLY happened because someone had switched out my flat bit for a honeycombed one. Something less abrasive (single sided bit) would have worked much nicer.
As for removing flashing further in, that is actualy PORTING, not port matching. Completely different method to that which I will soon show in a new video. SUBSCRIBE!
@HOYS Also, removing flash all the way into the port is actually a bad thing because in doing so, you lose the atomization that is gained from the rough surface deep inside the port. You need SOME roughness so that the air/fuel mixture can atomize. If it's to clean and perfect, you'll start to see that the air and fuel actually separate and do not burn effectively. Thanks.
@DarkInjection It's always a good idea to replace gaskets when removing a cylinder head...nothing is worse than a 12 hour job gone bad due to the usage of old gaskets. Gaskets are cheap & relatively easy to get ahold of. ALWAYS replace gaskets when you can afford to.
2nd question , why match the cylinder head to the gasket ? when the gasket fails there is no garranty the next gasket will match exactly.
wan2bvader 4 weeks ago
1st question, why is Arnie Cunningham from the movie Christine teaching?
wan2bvader 4 weeks ago
My question is since youre removing such little bit of material like on the 2, 3, 4 holes (left to right of camera) is it really worth your time and effort?
s0lidllama 1 month ago
anybody else hear the breathing and moaning???
renetony29 1 month ago
Great,,,Basic,,,but Great Video..thanks
NENESUPREMO 2 months ago
Good video covering the basics. Nice to see it after many years of reading about it. As to "rgmathers", all those years of experiance haven't taught you how to be decent to other people. I don't care if you wrote the book on head porting, your initial post is uncalled for. There is nothing wrong with this video, it just covers the basics.
sabledriver 2 months ago
@sabledriver once again I apologise to Anthony, I tried to make my point in a very poor way, it was truely not my intent and as you can see I told anthony how sorry I am for presenting myself in that manor and your right its not a bad video. By the way I didnt write the book....I just had a captain ass hole attack.
rgmathers 2 months ago
A couple things I would like to add is to match the port on the manifold for best results and try not to nick the gasket surface as that of course can cause a leak. Also practice on a junk head first as you learn how to ontrol the amont of metal you are taking off. I personally like the highest speed possable so it takes less force to remove the metal and it also leaves a smoother surface but this all depends on the material of the head. Bottom line I guess is practice making it smooth.
10manycars 2 months ago
Appreciate the tutorial. Nice vid.
boyleroy107 3 months ago
forgive me for calling you an idiot, it was rude of me.
As to who I am, I have been it the automotive field for over 35 years, I started out turning wrenchs and the ran many many shops, and taught automotive technology for most of 15 years. I also was head of the engines department and taught airflow dynamics and performance. For what its worth I am also A.S.E. certified. Please feel free to contact me again.
rgmathers 3 months ago
@rgmathers This is not a pissing match my friend. Just showing folks how to do the basics at home. When I am working on real performance stuff, this obviously isn't the route I would take, nor have I. I have built a couple 400+HP subaru wrx blocks & 2 dodge 440s, so I know a little about airflow dynamics. I'm no expert, but I try to help those out who know nothing of it. So please keep the rude comments away. Do us a favor and make a better video, instead of being rude.
DIYautotech 3 months ago 9
@DIYautotech once again forgive me for my rudeness, I was talking out of turn and should have thought before I spoke.
rgmathers 2 months ago
@rgmathers Takes a BIG man to admit he jumped the gun a bit, but doesn't detract from the message.
1951ianstaley 1 week ago
@rgmathers Are you not suppossed to leave the low velocity areas to maximise a swirling effect to help pull out the gasses and reduce the pulses going back to the combustion chamber ?
RCMACSPEED 2 months ago
@RCMACSPEED I guess as a rule I am not that concerned with the exhaust as I am with the intake as sucking air in is harder then blowing it out. But as far as reducing back pressure is concerned, valve overlap as well as exhaust configuration are the areas that look at the most. this is just a generasation as there are so many opinions in this area. david vizard probably explains it better then I do as he has studied air flow dynamics exstensivly and knows about a thousand times what I know. :)
rgmathers 2 months ago
@rgmathers I read his book on the mini engine I think that guy is a genious maybe at different rpms their is a different aproach.
RCMACSPEED 2 months ago
@RCMACSPEED yes I regard him in the same way, He has not only worked big bore engines but small as well, his mini actually beat an F1 car!! in the hill climb. he is located in tucsan AZ. I believe and he will answer any question anyone has. I have studied most of the great ones,Jenkins,unich,Landy,but david has always made the most sense to me in his approace to performance. by the way great suspension film very cool. seems you know your art well. I enjoy intellectual diversion.
rgmathers 2 months ago
@rgmathers I agree on the importance of good intake airflow, but I'd encourage others not to underestimate the importance of the exhaust side. It is very important to be able to get the exhaust gases out quickly. When doing this kind of work I like to simply clean up and polish the intake ports, not really open the up. There smaller but smooth intake ports mean high air velocity=low end torque. The exhaust ports however being smaller usually benefit greatly from being opened up.
gunforme 3 weeks ago
@gunforme I agree with much of what your saying. I don't Like to really open up the intake ports as it slows down air and velocity is what its about. I just smooth and blend, I have friends that re shape ports and such but that is above my skill level. It is so hard to explain all of this in just a few words. I agree, the smaller the intake port the better low end torque will be but as usual it all depends on what you want the engine to do.
rgmathers 3 weeks ago
if you would like instruction contact me @ robtsandra@gmail.com
rgmathers 3 months ago
@rgmathers and who are you exactly?
DIYautotech 3 months ago
your an idiot and have no concept of air flow dynamics...study my friend and stop trying to advise on things you know nothing about
rgmathers 3 months ago
hey this is cool,is this a skool?
jamargutter 3 months ago
Very nice, methodical tutorial! How much of a horsepower increase would you typically expect, percentage-wise, from port matching on a typical v8 fuel injected motor? How about fuel efficiency?
351cleavland 3 months ago
Is there that much of a difference in nonported heads an ported heads ? For like "power wise" Would you be able to fell it?
skulledmonte84 4 months ago
To make the gasket marking the same & doesn't move try bolting it down with some spacers. The gasket you are using has alot of leway & movement, not easy to successfully match all ports the same.
hillhoon 6 months ago
you sure its not just the gasket brand? or if you need a new gasket down the road and its from a different brand, willl this not be any good?
staticxmako 6 months ago
@staticxmako All the brands of gaskets are going to produce a gasket that is the same size. They have to be "standardized" due to OEM and OE specifications. Aslong as you buy a product that is OE or OEM then you will be in great shape.
OE - original equipment
OEM - original equipment manufacturer
DIYautotech 6 months ago
@DIYautotech I have purchased two different gaskets in the past and they were slightly different from each other. I had purchased one, I believe it was a Felpro, and I used it to gasket match a intake and cylinder head. Later when I went to do some work and change the gaskets I purchased another which was a little different and didn't match up quite the same. I took it back and got a different one of course. I believe that is why some choose to port match rather than gasket match.
gunforme 3 weeks ago
no you dont do this to the manifolds, hold the gasket up to the manifold and they will be the same size
3NOSHITSHERLOCK3 6 months ago
@3NOSHITSHERLOCK3 You are infact very incorrect in your statement. I have ported many heads and "Port Matched" even more. Almost EVERY time you place the gasket up to its mating surface, you'll notice it does NOT match up perfectly. This is also true for both the intake & exhaust manifolds. Do no be ignorant, knowledge is power my friend, learn to use it.
DIYautotech 6 months ago
I take it you have to do this on the exhaust manifold aswell? otherwise if it was the same as the cylinder head was before doing this would do nothing
vanepico 7 months ago
A good video with some sound advice, but I would say that the port job is about half done.
You need to remove flashing further into the head, and for exhaust ports make them smooth as can be.
I cringed everytime you jumped the bit and nicked the gasket surface.
HOYS 7 months ago
@HOYS Remember Hoys that this isn't a cylinder head porting, this is just PORT MATCHING. As for nicking the bit on the gasket surface, that only happened once, and it ONLY happened because someone had switched out my flat bit for a honeycombed one. Something less abrasive (single sided bit) would have worked much nicer.
As for removing flashing further in, that is actualy PORTING, not port matching. Completely different method to that which I will soon show in a new video. SUBSCRIBE!
DIYautotech 7 months ago
@HOYS Also, removing flash all the way into the port is actually a bad thing because in doing so, you lose the atomization that is gained from the rough surface deep inside the port. You need SOME roughness so that the air/fuel mixture can atomize. If it's to clean and perfect, you'll start to see that the air and fuel actually separate and do not burn effectively. Thanks.
DIYautotech 7 months ago
so if i want to polish my head i have to replace all gaskets?
DarkInjection 7 months ago
@DarkInjection It's always a good idea to replace gaskets when removing a cylinder head...nothing is worse than a 12 hour job gone bad due to the usage of old gaskets. Gaskets are cheap & relatively easy to get ahold of. ALWAYS replace gaskets when you can afford to.
DIYautotech 7 months ago
Nice vid, will mos def use the advices
PManism 8 months ago
nice vid
lilcrazydude93 10 months ago
@lilcrazydude93 make sure to subscribe!
DIYautotech 10 months ago