Genuine 1985 Toyota MR2 Cylinder Head

1985 Toyota MR2 Cylinder Head Parts Questions & Experts Answers

• Q: How to remove and install a cylinder head for the 1985 Toyota MR2?

  A: Disconnect the cable from the negative terminal of the battery, drain the engine coolant, and remove the intake manifold, exhaust manifold, and cylinder head covers. Next, take out the timing belt and camshaft timing pulleys, followed by the camshafts, distributor, and alternator adjustment bolt. Remove the coolant hose between the filler cap and water outlet, disconnect the bypass pipe from both the water outlet and the block, and set it aside. Disconnect the heater hose, fuel line brackets, both temperature sensors, and the wire harness from the rear cover. Gradually remove the cylinder head bolts in the specified order, then carefully lift the cylinder head straight up from the cylinder block dowel pins. If the head is difficult to remove, pry it loose with a large screwdriver or pry bar, ensuring it is placed on wooden blocks on a clean work surface without tilting or turning it upside down. If replacing a damaged head gasket, mark the lifters and shims, remove them in order, and set them aside. Scrape off all old gasket material from the head and block mating surfaces, using a sharp, clean scraper while protecting the cylinders with clean shop rags. For those planning to send the head out for a valve job, new guides, or a complete overhaul, follow the appropriate disassembly, inspection, and reassembly procedures. Lay the new gasket in place on the block, position the cylinder head, and install the short head bolts on the intake side and the long bolts on the exhaust side, applying a light coating of engine oil on the bolt threads and under the bolt head before installation. Gradually tighten the head bolts in the proper sequence to the specified torque on the final pass, and complete the installation by reversing the removal steps.