Question 1

How to remove and install Cylinder Head in 2.7L V6 engine on Dodge Challenger?

Accepted Answer

As provide in this procedure, the engine must be cool before proceeding to this part of the task. First, first, the main timing chain and sprockets should be pulled out but be careful not to disturb crankshaft alignment marks. Subsequently, the camshafts have to be taken out of the cylinder head together with the rocker arms and hydraulic lash adjusters and have to be labeled according to the valve they belong to in order to be reinstalled later on in the same place. cut out the lower intake manifold and the exhaust manifold(s). Any remaining parts that are fastened on the cylinder head must be disconnected; including coolant fittings, ground straps cables, hoses, wires or brackets, water outlet housing should be detached by removing the heater supply bolts. Loosen the cylinder head bolts in a increment of 1/4 turn with the breaker bar in cooperation with the right sized socket in the reverse sequence of the lightening sequence in order to avoid warping or cracking the head and then go ahead and remove the bolts. You will remove the cylinder head including the exhaust manifold bolted to it-use a pry-bar if required. Before servicing it is advisable to dismantle all the external components of the cylinder head so as to clean them as well as assess their condition at an automotive machine shop. Also on engine installation, it is critical to guarantee that the mating surfaces of the cylinder head and block are devoid of any grime, carbon accumulation and old gasket material, a gasket scraper should be employed, and in addition, clean the surface with acetone or lacquer thinner. The cylinders should be packed with clean shop rag to eliminate finer material landing in the cylinder, and in case this occurs, use a vacuum cleaner to remove the substance. Practical: 22 Inspect block and head mating for damage Use file for slight damaged and consider machining if they are severely damaged for effective functioning. Nuke the threads in the head bolt holes with a tap which has the right thread as you make the clearance and clean them by blowing with compressed air. When all the bolts have been washed and dried, place each of them on a metal ruler or a straightedge; the thinned parts should be indicative of bolts that have stretched and must be changed. It is recommendable to replace the head bolts with new ones since they are manufactured to suit the engine. Check the cylinder head for warpage, this can be done via use of a precision straightedge along with feeler gauges, if it is warping then it should be machined. Replace those components which were removed from the head, place the new cylinder head gasket over the dowel pins of the block then put the head over the dowel and ensure the gasket is not shifted. Before tightening the head bolts, it will be necessary to lubricate the threaded parts and the hardened washers with clean engine oil: the chamfered surface of the washers should be positioned towards the heads of the bolts. Replace the bolts in the thread holes and just spin each of them, tighten all the bolts in stages as specified are outlined below. A few of these are the lash adjusters and the rocker arms, the camshafts, and finally the primary timing chain and its sprockets. Last but not the least, fill the cooling system to the required levels, replace the engine oil and the filter, switch on the engine and look for signs of oil or coolant leaks.

Question 2

How to properly remove and install the cylinder heads in 3.0L V6 engine on Dodge Grand Caravan?

Accepted Answer

It is essential that one should allow the engine to cool for some time before attempting this process. Place the engine at TDC of the compression stroke of the number 1 cylinder and then flush and drain the engine coolant. The timing belt cover has to be taken off so does the timing belt and the camshaft sprockets and inter alternate the intake manifold as well. Next you will have to take off the rocker arm parts with hydraulic lash adjusters, and the exhaust manifold(s), and note that each manifold may still stay connected to the cylinder head after head has been unbolted from the engine block if disconnected from the exhaust system or crossover pipe. With the front cylinder head, unscrew and unbolt the distributor, and air conditioning compressor from the bracket without removing the hoses and set it aside secured to the vehicle, in a way that it does not hang by the hoses, and then remove the air conditioning compressor bracket. Regarding the latter, one has to remove the brackets and heater hoses at the transaxle end of the rear cylinder head, remove the air cleaner housing from the engine compartment, and the alternator as well as its bracket from the cylinder head. Using a 10 mm hex drive tool, turn the cylinder head bolts counterclockwise in small steps of 1/4 turn up to the stage that they can be removed by hand and in the numerical sequence. The head bolts should also be stored in cardboard holders; the holders should be labeled to indicate the bolt pattern, including the front (F) and rear (R) of the engine, and the timing belt side of the engine. If we feel any resistance we place the head on a wood block and hammer and pry only on a casting protrusion. If so desired, it will be necessary to transaxle the camshaft(s). As for the installation, it is necessary to scrape off the remnants of the gasket material for the cylinder heads and the engine block, so the surfaces should be absolutely clean. Copper gasket scraper should be used to remove carbon and the remainders of the previous gasket after which the surfaces should be washed with lacquer thinner or acetone since oil on the mating surfaces affect the sealing. Examine also the block and head mating surfaces and use file for slight damages or if much damage then it is recommended to machine it. The threads in all the head bolt holes should be chased with a tap of the right size while the threaded holes in the block should be cleaned. Align the new gaskets to fit the dowel pins on the block, put the heads of the parts on the block such that they do not shift the gaskets, oil the threads lightly and tighten the bolts and nuts by hand and fit them where they were initially located. Perform the first process of putting the bolt in place and then proceed to the second step of tightening to render torque and then complete the process by making the necessary third step of tightening the bolt to the recommended torque. The remaining steps in the installation process are of course the reverse of the removal. Last of all, fill with coolant, change the engine oil and the filter and then turn over the engine and look for oil and coolant leaks.

OEM Dodge Cylinder Head

93 Cylinder Heads found

Dodge Cylinder Head Part Number: 68141352AD

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Dodge Cylinder Head Part Number: 68280511AD

Dodge Cylinder Head Part Number: 68280503AF

Dodge Cylinder Head Part Number: 68280510AD

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Dodge Cylinder Head Part Number: 4884469AI

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Dodge Head - Cylinder Part Number: 68708207AA

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Dodge Cylinder Head Part Number: 4777541

Dodge Cylinder Head

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