Vortec cylinder head crack magnetic

The constant change in temperature causes cracks to form in aluminum heads. Vortec heads tend to crack in the center two cylinders more than the ends. The vortec heads have the 3 bolt holes drilled and tapped on each end of the cylinder heads. This head is complete with brand new valves and springs. Clean the engine block and the cylinder head sealing surfaces. The previous version, in prostock form, used 47mm intake and 39mm exhaust valves. Replaces casting numbers 12552520, 125571, 12558059. Cylinder head, vortec, cast iron, assembled, 64cc chamber, 170cc intake runner, chevy, small block, each more info. How to check aluminum heads for cracks it still runs. This item professional powertrain 2ct7 chevrolet 4. Arguably the most dominate cylinder head in motorcycle drag racing, this completely redesigned casting eliminates the limitations of the original vortex formerly mtc cylinder head casting. How to assess a used engine block and stepbystep machining. A magnetic test for cracks on chevy heads with an explanation of the 305 head. Are these vortec heads cracked beyond usage or repair.

We use cookies to give you the best possible experience on our website. Trick flow engineers combined the best features of factory gm ls3 and ls7 cylinder heads with trick flows own unique brand of racewinning engineering and technology to create the ultimate square port ls cylinder head for 4. Since its introduction in the late 1990s there have been a few versions of the factory vortec head. Eventually, we honed in on a 350ci smallblock chevy being sold at a yard in.

The powder is then drawn to a cracks magnetic field, filling it, and. The magnetic method of crack detection is suitable for all of ferrous metals that is used on cast iron cylinder heads. The detector magnetizes the area being tested and, if a crack exists, one side of the crack will become a north magnetic pole and other side a south magnetic pole. Remove the ground wire bolt and the ground wire from the rear of the cylinder head. This is a brand new aftermarket marine cylinder head for all 5. Gm is now recommending a torque turn method of tightening the cylinder head for this engine. I have a chevy 502 water is leaking from top of cylinder head bolt. Because the cracks can be very small, using a magnetic particle.

This is not an aftermarket head, it is brand new from gm. Everything wrong with a 1st gen gm sierra silverado vortec. The ac will bolt up to the head, but the brace that bolts up from the ac compressor bracket to. We have some of the lowest prices on chevrolet performance parts, chevrolet performance engines, and chevrolet performance transmissions. These polished cylinder heads are pressure tested using magnetic detection to eliminate the chance of cracks or flaws unseen by the human eye. Narrow your results brand american cyl head 9 surefire 10 techhead 5 titan 1 autozone rewards. Well, i bought a used pair of vortec heads and theres a tiny crack at the edge of the combustion chamber, its just big enough that i can barely hook my finger nail in it. You do not have the required permissions to view the files attached to this post. But when the head is torqued down it could come apart. Garage sale speedway portable magnetic crack detector. Dry magnetic powder is a fine cast iron dust with dye added to make visual. How i diagnosed a cracked head on my 2005 gmc sierra with a 5. The name vortec can be confusing because gm used that name for.

If you do, theres a good chance its a cracked head. Because of this, it has become a very popular swap. Vortec cylinder head for sbc cracked exhaust valve seat. The cylinder head along with a gasket reside on top of the engine and.

Hello well this past fall i purchased some used 062 cylinder heads from a scrap yard with the hopes of switching out the stock heads on my 350 tbi small block. How often do you see cracked cylinder heads or blocks on the chevy 3. Complete cast iron vortec cylinder head assembly 12558060. The heads provide outstanding lowlift flow numbers the more air you flow, the more potential power and fast burn performance all in an affordable, castiron head. Go to the passenger side, look at the front of the head and see if you see the casting number 706.

A head may be cracked because the engine overheated. Magnetic particle detection magnaflux is good at finding cracks on block and head. Cracking causes the head to lose pressure, resulting in lost power for your vehicle. Modifying and test fitting chevy 350 vortec heads for thread in rocker studs. Chevrolet performance vortec cylinder heads 19331470. The name vortec can be confusing because gm used that name for their v6 and v8 truck engines as far back as 1985. Anything i should know about installing vortec heads. Large port cast iron vortec bare cylinder head 225cc. Its got a regular hei and 600 holley from a 350 ho deluxe crate engine, cheapo professional products intake, and a set of shorty headers, other than that its stock and has ran 14. Chevrolet performance sbc cast iron vortec cylinder head. Cracks in cylinder heads or blocks except in the main bore or web area are often. Chevrolet automotive cylinder heads clearwater florida. Chevy vortec cast iron cylinder heads the chevy vortec head is an excellent choice for a variety of performance and race applications. Compared to previous gm smallblock cylinder head designs, the vortec bowtie has allnew ports that are taller and narrower, the idea.

Vortec l31 cylinder head crankshaft coalition wiki. The special magnetic metallic powder moves right to the damage and lets you define cracks that are not visible to the naked eye. The iron oxide will gather and react at the points of magnetic flux and become visible under a black. This information is somewhat different than previous engines. This portable magnetic crack detector goes anywhere to inspect your head or block for cracks. If it were to leak water would be coming out the top of the head bolt if the threads were sealed. Our cylinder heads are assembled using a new valve stem and seals that feature the latest in high temperature technologies increasing heat resistance and longevity. When performing your own check for cracks, you need a method of testing that does not use expensive equipment and works with a non magnetic metal. You may browse the list of chevrolet cylinder heads below or use the search form below to find the cylinder head for your specific chevrolet vehicle. Over 90% of the vortecs 275 lbft of torque is available from 1600 rpm to 5600 rpm. I dont have any ported numbers on the new heads yet, but i did find the ported numbers from the. This is a brand new gm marine cylinder head for all 5. Oil is vital to maintaining the health of your engine, but if its leaving the areas of the car where its needed it can cause major damage. Of course, i could probably write a book about crack detection.

He is a cylinder head specialist and the following numbers and quotes are from him personally from his portingtesting of stock gm 8. Low on coolant, so i added about a half gallon or so of dexcoolwater. How to find and fix cracks engine builder magazine. Holes in your head or the fine art of crack detection goodson. After removing the cylinder head retainers, phillipe mounted our block and. Watch this video to learn how to diagnose whether a misfire is being caused by a cracked cylinder head or leaking head gasket allowing oil to enter your coolant and spark plugs. Long stroke engines typically provide good low rpm torque and the vortec 4200 is no exception. How often do you see cracked cylinder heads or blocks on. Why is it important to magnaflux test cylinder heads. Magnetic particle inspection is the most definitive method of detecting cracks and imperfections in any ferrous engine parts. Last week i noticed engine temp was bouncing between 210230. Plug into any 110 volt ac outlet and simply push the onoff switch down the button stays down so your hands are free.

This newly designed cast iron marine and stock replacement head will work on any small block chevy application and is the only head of its. After it was cnc ported to optimize air flow, it flowed about 160 cfm. Vortec bowtie cylinder heads come with bigger valves, a thicker deck surface and 66cc combustion chambers. Magnetic particle detection magnaflux is good at finding cracks on block and head deck. Now, i see milky colored oilgunk at my oil cap now. The vortec requires a vortec style intake manifold due to its improved manifold mounting flange and gasket design and raised intake ports. They should not be modified for older 12 bolt style intakes because there is not. This procedure assures the highest quality cast iron cylinder heads. Performed 354560degree valve job and 75degree throat cut on. Also, there looks like something hit the top of the chamber between the intakeexhaust valves, like theres a little piece of it missing, though it doesnt. Brazing would add to much heat an cause warping maybe. Remove the bolt holding the fuel pipe bracket to the rear of the cylinder head.

I fear that i have the dreaded castech head crack issue. This is not an aftermarket head, this is a remanufactured gm cylinder head. This is a remanufactured gm marine cylinder head for 4. The vortec head out flows the bow tie head out of the box and is a 20 to 40 horsepower bolt on increase over earlier cast iron small block heads. Features include fast burn combustion chambers, and a highvelocity lt1 port design. I run vortecs on my truck, actually the whole vortec engine from a 96 chevy truck. These cast iron vortec cylinder heads will fit 1958 and later small block chevy engines, and offer a 20 to 40 hp increase over earlier cast iron small block heads. Any cracks or flaws in the cylinder head will cause a disturbance or magnetic flux in the magnetic field. Visit our whats new page to get all the latest chevrolet performance news, announcements, and specials. Have you ever seen a set of cylinder heads cracked like.