Holden 6 cylinder head porting books

Porting and flow testing to increase horsepower muscle car diy. Pro port cnc continues on the award winning racing and engine building experience of proprietor rod rainford. This picture shows a ceramic coated aussiespeed manifold the divided plenum of the as0167 and as0169 aussiespeed 2 barrel holden 6 inlet manifold, the unique plenum is not unlike to the type used on our 4. Ultraflow intake manifolds suit holden 6 red and blue. When serious engine builders blueprint an engine, theyll port or smoothoff rough head castings around the intake and exhaust ports for improved, smoother air flow. Wb vb vc vh blue 202 head holden commodore 6 six cylinder. Pop wanted the economy of the 6 so the dealer pulled one from an f100 and dropped it in the wagon and stuck the 289 in the f100. The blue 173s have a much better chamber, and these heads can be ported to provide much the same flow as a ported efi head to give the best of both worlds but be very wary of that water passage in the short side turn.

Holden car and truck cylinder heads and parts for sale shop with. Car rental near me car thieves spot a jucy lockdown target. While engines from other manufacturers of the same era had head porting that was at least adequate or even too big eg. Clarkos performance has exclusive access to after market holden red cylinder heads. By this stage cylinder head porting and flow testing played a major role in shanes engine development and it started to show, a national record in 6 cylinder hydrofoil class 105mph average and breaking a longstanding world record held by jack roush with a ford, this flowed over v8 supercars, and in 2001 a set of his modified cylinder heads were on the front row at bathurst. Holden six is 3290ccs, the top equation for that engine would work out to be.

Cylinder head porting is a skill that must be developed and honed by hours and hours of practice. When engine speeds are 5,000 to 6,000 rpm, the need for port chamberinduced mixture motion is far less. Back by popular demand is yella terras legendary 12 port head to suit the holden straight 6. This brings with it the problem that the exhaust ports have a tighter turn radius.

Jun 18, 2010 the most critical areas when porting a cylinder head are those which pass the most air at the highest speed and for the longest duration, the port is at or near the valve seat, optimizing airflow. Another popular solution, as used in the bmc aseries and holden 6 cylinder engines is the siamesed port. Revised port designs that flow over 30% better than that of the factory 12 port heads with potential for much higher flow figures when professionally ported. Vrs cylinder head gasket setkit suits holden commodore vg vn vp vr 3. Hrd ford find out more frank marchese and the dandy engines crew took. The first step is to use the traditional method of hand porting using grinding tools and our past experience and knowledge for shape and sizing. This engine was one of the later engines built after many of the refinements had been done on earlier engine fitted with the krogdahl twin cam cylinder head. Higgins racing heads have been supplying cylinder heads to major race teams from. Cylinder head services livernois offers something that most of our competition just cant match, complete in house cylinder head development from start to finish. Aussie manufactured holden cast alloy cnc ported heads flow over.

My parents bought a 66 ranch wagon galaxy wagon new, came from the facotry with a 289. Cylinder head design, porting, and repair has been a main focus for the stiegemeier team since 1979. Performance cylinder heads enhance the airflow into your engine, giving you improved power and torque. Art, baby, books, magazines, business, cameras, cars, bikes, boats. Revised port designs for a 30% improvement in flow figures. The video is of a later holden 6 cylinder fitted with motec fuel injection and a krogdahl cylinder head. This dramatic improvement is due to the development of the taller, wider ports, improved short turn radius, larger valve throats and. Factory holden lc gtr torana, hr x2, hk 186s gts monaro cast iron twin exhaust headers are pictured below. We specialize in 5 axis cnc porting solutions on a large range of cylinder heads, both import and domestic. At present i think only the aluminium versions are still available. Porting alters the shape and flow characteristics of the port. Yellaterra can still provide 12 port heads, and if you can afford them they are the pick of the 12 port holden style heads. The street performance head port and valve job is based on one. Proport cnc, 30 bellevue road, golden square, bendigo 2020.

The oil pan is hq and please study the photos to do your own homework on this motor as. The engine can then breathe easier, resulting in greater power and efficiency. Its about flowing sufficient to allow the cylinder to fill. The object of the street port cylinder head is to get the most flow gains with the least amount of porting labor.

Or does anyone know a definate way to identify red heads. In short, the subjects in this chapter are physically porting heads, intakes. Nov 17, 20 how to cc heads, calculate dynamic stroke and dynamic compression, octane vs, compression, and what flow means when choosing cylinder heads. What is cylinder head porting, and how does it increase. Suits a lotusdeveloped 16valve cylinder head and a castiron cylinder block which was essentially the same as in opels 8valve engines.

The lump below it, inside the port is quite pronounced. In addition, we also do flowtesting and will provide camshaft recommendations for your specific performance needs. So dont rely on youtube tutorials or articles like this to go about porting. Hi all, just wondering if anyone has any info regarding fitment of a ford alloy cross flow head from the 44. Cylinder head porting head games modified magazine. Slant 6 chrysler the slant six valiant range of aussiespeed performance products is popular not just here in australia but with many of the slant 6 community in the usa, south america and parts of europe. The warranty provides for replacement cylinder heads only, and does not cover labor or any other costs. On the nonefi heads this would have a threaded hole leading into the port. If you dont believe me, just search online for cylinder head porting more harm than good and view the multiple pages of results. Dec 25, 20 page 3 of 8 holden six cylinder head 101. There is a flat blank section above the exhaust ports.

At least 200cfm should be possible with these heads after porting, a figure that is very very difficult to get achieve with the holden heads. From 1975 to the late 80s is when i did the most porting and flowing on factory heads. I use two forms of abrasives in a street port, carbide burr, and mounted stone. How to port and polish high performance v8 heads,tips. Cast iron xu1 heads have been fetching a premium on ebay and finally someone has been motivated enough to make new castings.

The reverseflow head still enjoys some popularity among enthusiasts including leyland mini, chrysler slant 6, holden and ford inline 6 fans. Preplanning reiterating, the internet is a valuable tool for the novice. There are a lot of shops that offering porting, or cnc porting, or cylinder head machining. Cylinder head and porting books page 2 don terrill. This book is filled with facts, examples and ways to obtain the best flow possible from a cylinder head. Part 21 cylinder head porting terms and tools 620 hp 454 big block chevy engine build. Holden inline 6 blueblack 12 port alloy cylinder head. In fact, on the honda dseries, bseries and kseries cylinder heads i have had ported and flowbench tested, as much as 3040% of the improvement to airflow has come from work done in the bowl area. May 24, 2016 as i have established, highairflow potential, especially through the cylinder head, is a key element in producing power. We take a very serious and methodical approach to cylinder head porting. Cylinderhead porting can be accomplished at home with some.

Whether you race pro stock, super comp, or just want to rebuild your old chevy 350 small block, there are cylinder heads just for you. Holden inline 6 blueblack alloy cylinder head 56cc. The cylinder heads are the early castings which match this era. Holden inline 6 blueblack 12 port alloy cylinder head bare. These engines were fitted to all australian designed holdens of the same. The ford six with a pipemax designed 6 into 1 set of extractors has one of the most unusual, distinctive and beautiful exhaust i have even heard. After market holden 6 cyl 9 port red heads clarkos performance. Cylinderhead porting basics for the home enthusiast.

I realise it wouldnt be as good as hand ported heads, and difficult to tell the quality of work without viewing the heads, but whats the general opinion from the people here who have experience with porting. The yella terra legendary alloy 12 port head to suit the holden straight 6 has been re introduced into the australian market. These are the only holden six cylinder head that you can fit stud mount roller rockers to and not have to use guide plates. At part throttle, lack of mixture motion can also have a direct negative impact on mileage. This is done to balance cylinder fill to give good velocity and an even flow on all cylinders the dividing wall in the plenum in front of cylinders 3 and 4 and the runners are matched to the port sizes on cylinders 1, 2, 5 and 6. Ultra lightweight alloy casting with redesigned water jackets for much imroved head cooling. Not sure why we dont already have a thread like this, probably no one has bothered. Ive heard of it being done before and apparently you need to fit it on backwards so that thermostat housing is on the rear and exhaust comes out the correct holden way. Using highly efficient port designs and stateoftheart combustion chamber shapes, edelbrock cylinder heads offer improved performance throughout the rpm range for great throttle response and top. Krogdahl cylinder head to suit holden six ford 6 cylinder. Mixture motion from quench action between the piston crown and the cylinder head face can be instrumental toward increased torque at all engine speeds. Facts and information about the chevy inline six engine. Usually the smaller holden six heads give a higher compression ratio, unless youre talking about the efi 202 in the vk which has smaller, kidney shaped combustion chambers to give a higher compression ratio, i. May 08, 2015 the bowl area, and especially the short turn radius on the port floor, are also critical to airflow in most cylinder heads.

Rb30 cnc ported cylinder head with manley oversize valves. Numbers indicate cast in october 1969 which means it probably lived in a ht or maybe a hg. The holden straightsix motor is a series of straightsix engine that were produced by general motorsholdens in australia between 1948 and 1986. All of the other heads you must use guide plates if going to stud mounted roller rockers, or use shaft mounted roller rockers. When engine speeds are 5,000 to 6,000 rpm, the need for portchamberinduced mixture motion is far less.

Cylinder head porting and polishing how to diy guide. Sc1l6 cylinder head porting tool car engine carbide bur burr manifold header new see more like this a c s p o k s n z s o r 9 e d s w y u 5 5. Holden hr ht red 6 six cylinder 149 161 ci high compression head good condition. Step by step the smallblock ford has never been blessed with particularly good cylinder heads in its halfcentury service life. Cleveland or square port bb chev, the 9 port holden head was barely able to feed stock 149 motors. The initial grey motor was so dubbed because of the colour of the cylinder block, later motors came in the form of a red, blue, black, and the four cylinder starfire engine. When serious engine builders blueprint an engine, theyll port or smoothoff rough head castings around the intake and exhaust ports for. This is a highly flow efficient, rectangular crosssection straight tube and flows 300 cfm. Hey davidburns, if your thinking of a port job etc. It includes disassembly, inspection and cleaning, cutting valve seats with a 3angle profile, lapping valves, and replacement of valve seals.

Iron heads and alloy have a similar as cast finish. The port is them run through preliminary tests on a flow bench. They look quite good, with oversized valves and improved porting with thicker walls. Ghp set of 52 cone cylinder shaped mini sanding engine porting assortment kit. Engine porting kit can help your engine generate more power.

Types of cylinder head portseat design face angles. Aussies are world renown for their resourcefulness and ian moo moodie is one of our quiet acheivers who grew up under the influence of engine builder ron. If you are starting with ascast parts, a means of reshaping them and testing the subsequent flow results are very useful aids to maximizing output. Suits holden barina acl brand made in aust quality. I thought alloy heads negate the need for porting because their finish is already so smooth. In fact some australian ford enthusiasts consider the 250 2v reverseflow head to be superior to the honda designed citation needed crossflow head that replaced it. I asked jon kaase in the early 90s how he had time to port heads. Cylinder heads, as manufactured, are usually suboptimal for racing applications due to design and are made for maximum durability hence the thickness of the walls. Edelbrock performance cylinder heads are made in the usa, cast and heat treated at the edelbrock foundry and machined at edelbrocks manufacturing facility for the best in quality and performance. This motor is a candidate for someone restoring a holden to original spec and is a rebuilder only. Does anyone out there know the casting numbers for holden 6 heads.

Holden 6 blue motor manifold hp plus ultraflow intake manifold suit ford 250 xflow. Every car will be different, the head pictured came from a 98 sunfire engine ln2. C16xe was available only in corsa gsi, model years 1993 and 1994. Cylinder head porting refers to the process of modifying the intake and exhaust ports of an internal combustion engine to improve quantity of the air flow. By combining our own cylinder head knowledge and experience, extensive computer simulations, many hours of flow bench testing, consultation with race teams and engine building specialists, chi have developed a number of cnc porting programs for the ls series of cylinder heads.

He said he would develop one cylinder, then had a porting artist chained to a bench in the basement to copy it for the other seven cylinders. Quick disclaimer, please read this first what i intend to do here is show and explain to be the best of my ability the different generation holden six cylinder heads. The initial grey motor was so dubbed because of the colour of the cylinder block, later motors came in the form of a red, blue, black, and the fourcylinder starfire engine. The holden straightsix motor is a series of straightsix engine that were produced by general motors holden s in australia between 1948 and 1986. Nov 10, 2015 ford did put the 300 6s in trucks, however, back in the day, the dealer would swap around engines to make the buyer happy. This problem is somewhat offset by the larger port. Mike winterboer was the owner of classic inlines, a company that specialized in six cylinder performance. After market holden 6 cyl 9 port red heads clarkos. Holden 6 cylinder performance manifolds and engine parts.

The bigger, later motors were equally asthmatic despite having bigger valves. Intense stage 2 cylinder heads are warranted for a period of ninety 90 days from the date of purchase against defects in materials and workmanship. The ports on the aussiespeed holden 6 manifolds differ in size on the port mouth for a reason. Mar 28, 2016 the specifics and details of this particular cylinder head porting and polishing job apply best to the 4age bigport head, but the general principles, tools and methods are pretty much the same for. Unfollow cylinder head porting kit to stop getting updates on your ebay feed. These factory style headers are good for a few extra horse power over std factory single outlet exhaust manifolds. Pavtek performance engines cnc holden vnvt semi full port cylinder heads price seems fairly reasonable. Section b, the turn into the seat area, flows some 200 cfm. In the holden service manual, youd assume that all the heads are the same because they dont have the cc rating listed for the combustion chambers but all the valves are listed as being the same size,id have to assume that the smaller engines have a smaller combustion chamber but, the only thing i dont think you can do is use say a 161 head. The aussiespeed hurricane was so well accepted by the world that the aussiespeed range of slant 6 parts is one of the largest ranges produced. In this configuration one large port feeds 2 adjacent cylinders. A word of warning though, cylinder head porting and gas flowing is a rather advanced form of car modification and is not for the novice or for the faint of heart. The story about how this cylinder head came about is fairly long. The oem valve job brings your cylinder head back to oem honda specs.