These bearing caps need to be torqued down Each camshaft gets tightened down to its cylinder head using a series of bearing caps. To start with you will need to have all of the sprockets installed and torqued down as well as the camshafts Where another set of chains goes out to each cylinder head. A single chain runs from the crankshaft sprocket to the idler sprocket Of each cylinder head followed by an idler sprocket just above the crankshaft sprocket. This belt system consists of a sprocket on each camshaft located at the top On the Dodge 3.6 Pentastar engine the timing system is ran by the use of a single timing belt. Make sure to not overturn or underturn any bolt as this can cause an unbalance of surface pressure between the gasket and head.ĭodge Durango 3.6L Cylinder Head Main Bolt Torque Specs : 22 ft-lbs + 33 ft-lbs + 130° The 3 small head bolts per each cylinder head can be torqued down toĢ0 ft-lbs. The 8 main bolts located on the sides of the cylinder heads should be torqued down toĢ2 ft-lbs and then 33 ft-lbs followed by an additional 130 degree turn. The 3.6L Pentastar engine uses two different sizes of cylinder head bolts with a total ofġ0 bolts being installed into the cylinder head. Head bolts have a multi-step process for torqueing. Once all the head bolts have been installed and finger tightened you can start the torqueing process, almost all Sure to lubricate the bolts in clean engine oil before installing them into the head. Use TTY or Torque to Yield head bolts meaning they stretch during torqueing and cannot be used twice. Be sure to buy new head bolts as many manufacturers Installing the head bolts to make sure it doesn't move. The gasket and block, if needed have someone assist with this process as the head can be heavyĪnd you don't want to scratch anything or drop it! Once the head has been placed you will want to start With the gasket in place you can set the cylinder head onto Something I usually do is spray down the head gasket with some engine copper spray from permatex which you canįind here, this ensures that any gaps that could be present between the 2 surfaces gets filled with theĪlso helps to transfer heat between the 2 metals. Once everything is ready youĬan install the head gasket onto the engine block by aligning the alignment dowels. Locations, typically this means putting the #1 piston to TDC or Top Dead Center. Much the same you have to set the pistons to their correct To set the camshafts to their correct positions to prevent any valves from hitting pistons during installationĪnd torquing of the head bolts. The first thing you must do when installing cylinder heads is to ensure both the block and head surfaces areĬompletely clean from dust, oil, and any debris. To ensure all pistons move smoothly in and out of their cylinders and nothing binds.ĭodge Durango 3.6L Pentastar Connecting Rod Torque Specs : 15 ft-lbs + 90° Rod bolts to 10 ft-lbs and then to 15 ft-lbs followed by an additional 90 degree turn. Once installed you can match the connecting rod caps with the correct rods and start to torque the connecting Or mark is facing the front of the engine and that you don't scratch the cylinder. The piston can now be lowered into the cylinder, make sure the dot Once the rings have been installed you can now fit the connecting rod bearings into the end capsĪnd lube them up with oil or lithium grease. Each ring manufacturer is different so be sure to check for your The instructions given with the new rings. Positions, this can be determined by looking at Make sure to put the correct rings in the correct Not to stretch the rings or break them during installation. To install the pistons and connecting rods you must first install the piston rings into each piston. Once finished you should be good to continue with the rest of the engine.ĭodge Durango 3.6L Main Cap Inner Bolts Torque Specs : 15 ft-lbs + 90°ĭodge Durango 3.6L Main Cap Outer Bolts Torque Specs : 16 ft-lbs + 90°ĭodge Durango 3.6L Main Cap Side Bolts Torque Specs : 20 ft-lbs Go through each bolt during each step and work your way from the inside or middle caps to the outside or outwards bearing caps. The main bearing side bolts can be installed last and torqued down to 20 ft-lbs. Tightened down to 16 ft-lbs and then a 90 degree turn. For the inner bolts you can start by torqueing them down toġ5 ft-lbs and then follow it up with a 90 degree turn by going through each bolt during each step. Once prepared you can place the caps onto the crankshaftĪnd begin tightening the bolts down in a multi stage process. The 3.6L engine block main bearing caps should be inspected for any defects or flaws before installation.īe sure to lubricate the bearing surfaces prior to installation.
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