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Edelbrock RPM Olds 455 Head Porting
The scariest thing I ever did was port a set of new Edelbrock aluminum cylinder heads. My first attempt at porting any cylinder head. I raised the roof .200" and dropped the floor .040". It's best to leave the floor alone or raise it by filling with epoxy. Porting kit by Mondello.

NRE University: Cylinder Head Secrets, Part 2 of 2.
Join Tom Nelson as he visits West Coast Cylinder Heads to film typical NRE cylinder head modification. Good stuff for gearheads. Hundreds of videos at http://nelsonracingengines.com. This is part 2 of 2 parts.

Eastwood's DIY Polishing and Porting Cylinder Heads Kit
Buy The Kit Here: http://www.eastwood.com/cylinder-porting-and-finishing-kit.html?utm_source= Youtube&utm_medium=Annotation&utm_content=Engine%20Porting%20Kit&utm_campai gn=2009-8-20 In this video, Mark shows how to Polish and Port your Engine Cylinder Heads and gain up to 10% more HP with Eastwood's Engine Porting Kit! CYLINDER PORTING & FINISHING KIT offers you the most requested carbide burrs and abrasive smoothing rolls and tapers used for engine potting and finishing Your kit includes four different cone and tree-shape steel-hardened, precision double-cut Carbide Steel 6" long Burrs and 10 each 80 Grit Abrasive Cylinders and Tapers with 2 each 4" and 6" long high-speed mandrels.

How to port and polish high performance v8 heads,tips,tricks and trade secrets exposed
*******CHECK OUT PART 2 ***** http://www.youtube.com/watch?v=sZDlZxqRVJw COMBUSTION CHAMBERS http://www.youtube.com/watch?v=D63jgJs95gY DEGREE CAMSHAFTS http://www.youtube.com/watch?v=azLX1pi2oVE I look at porting and polishing high performance heads,I been building engines for 30 years, most of that time in research and development,I explain in real simple terms air flows and velocities,these 308ci General Motors Holden heads have been transformed over 70 hours,I show you all the do's and dont's,keep a lookout for the rest of the rebuild vids, as we head into final assembly,especially dialing in camshaft's,compression ratio's and everything else that makes internal combustion engines cranky,Aussie Heads and Race Engines-One Man One Shop

basics of cylinder head combustion chambers polishing
Polishing cylinder head combustion chambers can reduce hot spots and some what reduce the ablility of carbon to build on the smooth surfaces.

How to port and polish high performance v8 heads,tips,tricks and trade secrets exposed part2
I'll show you some port work and explain how and where to port/polish heads,I 'll show you some simple mandrals I made to get right down the whole port,and some tips on making polishing cheaper on your materials,quicker and achieve better finishers

How to port and polish a turbo exhaust housing
I'll fill this in later. The "book" I typed in this field before didn't save. Come back later if you want to read more about the theories behind porting and polishing.

Looking at my Chevy 383 Ported "Revised" Pro Comp Aluminum Heads rat rod sbc
I was asked what I do to port a set of Revised Pro Comp heads. There are so many things to touch upon but I'll just mention what I did on these to be quick. A little about me,,I've been building engines for 30 years now. I've been porting heads about 20 years. I try to keep up with whats going on and I continually study online. I buy new books and engine building software(Desk-top Dyno/Dragstrip,etc). I'm impressed with the software results. Anyway,,When I saw these heads online I wanted to see just how they stacked up to Darts,Brodix,Edelbrock,etc. I had also read where people were bashing them. Some said they were cheaply made castings, others bashed 'em because they're made overseas. Then later they re-emerged as "New & Improved". I have a friend that sells them online and he built up a 383 and we ported a set and they did very well,,especially for the {lack of) money. When I first looked at 'em I didn't like the areas in the ports that are under the valve seats. I point out the areas at the start of the vid. There are small areas under the valve seats that are noticably machined away. It's nothing to be concerned with as none have ever failed that I know of. There are great photos online that show these heads aggressively CNC Ported,they're so huge that the Intake Ports run into Int bolt hole bosses(I can email you the pics if you need them). Thats too big as they'll have to run sleeves in the mounting holes. Something that I recommend too is to look at the ports online of the major manufactuers of racing heads,,or if available look at ones being built at a local machine shop. When I port a set of heads I make a thickness gauge out of coat hangers. When finished it looks like an "X". It accurately reflects how thick the metal is while porting so that you don't go too far and it helps to get ports consistent ( I'll add that 'how too' later). One unusual thing that I do is lap the valves to the seats with an electric drill motor. It's reversible and takes just a second for each valve and seat to show the correct "grey ring". It takes about 3 minutes to do each head. The results are outstanding with the seats showing concentricity. Most local machine shops just cut the valves, then the seats,,then assemble them. If you do the solvent test they usually leak,,sometimes badly. Thats cylinder leak down,,less power,smoking,blow by,etc. So you get what you pay for. What I mean is that I ALWAYS disassemble the stuff at home and inspect the work. When I find a problem I take it back to the machine shop.Most machine shops don't like a guy who knows how to inspect the work. A good machine shop is really hard to find not just the work but the people there. I know of a few local machine shops in central Arkansas that will do bad work for one customer and great work for another intentially.A lot of times they're racing rivals. Remember, when you get crappy work and run it ~ it'll run crappy or not work,,or last very long. So when you take the stuff apart at home you can see who your friends are. I think it's important to spend your money where the quality of the work is at the forefront of the business.Thats why I drive to a good place with modern machines and trained people. You can have an intelligent conversation and get what you ask and pay for. One more thing,,Try my drill method for lapping the valves,,it works really smoothly.Second thing,,the old notion of polishing the ports has been proven wrong scientifically,especially on the Intakes. They need a slight texture,,look up why.Too much to go into here. Theres even guys who epoxy pebbles or marbles on the bottoms of their racing boats to ride more on air,,reducing friction. On the motor,, I'll start the engine in the next few days and then later toss it into an 86 S-10. It'll have an old school turbo 350 with shift kit and an old Vega Stall Convertor. I can port a set of these heads in a day and a half for about $300.oo The Iron stock type heads are harder and take more time and cost a little more. I've ported about 30 sets now and got to run half of them and got to see how they do. Porting works! and makes quite a difference. Thanks for looking.

CNC Cylinder Head porting and CNC Engine Blocks on the SAME Machine!
CENTROID ENGINE SHOP CNC Machining Center. 3 Machine tool in 1. CNC port cylinder heads and Blueprint and CNC machine engine blocks AND produce all kinds of CNC parts using the same machine.

Porting and Polishing RHS Racing Heads for Chevy 383 Stroker
Porting and Polishing RHS Racing Heads for Chevy 383 Stroker

Hot Rod TV Head Porting
How to match intake to cly heads

Heads, Porting & Valve Trains preview 1
This is a short clip from our 5+ hour, triple DVD set titled "Heads, Porting & Valve Trains". It takes you through every aspect of heads (aluminum and cast iron), valves, combustion chambers, rockers, setting up valve train geometry, adjusting valves, springs, push rods, cams, lifters, porting both intake manifolds and heads, flow bench testing, degreeing a cam, timing sets, reading and understanding a cam card, and much MUCH more! Everything is explained so even a complete novice can understand.

Cylinder Head 204 - Porting & Polishing
This is a first-generation 1992 1.6L Hyundai Elantra small-combustion-chamber head. Thats what it is. It's a J1 engine's cylinder head. In Cylinder Head 106 I talked about the mainstream porting theories as they are discussed. We looked at a cylinder head that I have thousands of dollars of professional work performed on, and a bone-stock second-generation head that I didn't port. In this video I just might do something you haven't seen done before. For some, that may be uncomfortable. The port and polish job I perform here is what I think will work best for my current build. This is not an extreme killer port job. What will be different here is where port textures are concerned, I will be following the advice of a reputable source that will remain un-named. You're free to port yours differently than I do in this video, and I give you that out, around the 20 minute marker. The Hyundai is far from being an ultimate-performance build. It's a $400 box of scraps with nothing but time invested. It's perfect for this video. My finished product WILL be an improvement over what I had. I don't yet have access to a flow bench. I still have an achievement to un-lock. As far as you should be concerned with the techniques I employ... without flow numbers there is no evidence of what this will do, but we will gather lots of info from dynp sessions and drag strip time slips. If I could test it on a flow bench, I would. There are MANY, and when I say many, I mean thousands of flame war mongering pirates floating around on rough seas with a hair trigger cannon finger itching to fire if you port a head any differently than what the herd mentality says to do while porting a cylinder head. I cover the herd mentality because it has merit. It's been tested. Tried and true. But I don't follow it to the letter of the law. I'm definitely not here to de-bunk it. I would port a cylinder head differently for each build based on how that engine was used. There's an extremely valid reason why relating to air speed. It's not the texture of a port that maximizes the effect of fuel atomization, but the velocity of the air running through an x or y sized valve. The driving factor in this is the piston speed. I'm not going to give you the technical information, but will refer you to information about the Lovell factor. There's a better description of this in the links below, and even a calculator to help you find your engine's sweet spot. Why the Lovell factor is important: https://www.highpowermedia.com/blog/3346/the-effect-of-valve-size Lovell gas factor calculator: http://www.rbracing-rsr.com/lovellgascalc.html Only people who have flow testing equipment know for sure what really works and have the capability to produce a perfectly-matched port job for the ultimate performance build. Those guys know the definition of ultimate, and THEY are floating below the water Aegis-class submarines ready to blow your comment up if you don't know what you're talking about. They don't care if you're an armchair mechanic or a herd of pirates. I will say, they're zoomed in pretty close on me right now, and I'm expecting to take a few hits. My work will be tested based on Dyno and drag strip performance, and the results will be posted here. Fortunately, those kinds of videos are a WHOLE LOT EASIER TO MAKE!!!

Porting Pro Comp 200cc Aluminum Head
PLEASE READ This is the begining procedures and evaluation of the Pro Comp 200cc Aluminum Cylinder Head. This evaluation set the procedure for the begining process of the head, and its strong points as well as it problems. One chamber is finished and the rest is to be done. This is part one.

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