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In Reply to: how hard is this? posted by grimace on September 17, 2000 at 22:42:04:
matthew bajda
You need to find a good automotive machine shop. Preferably one that knows these engines. Unless you are familiar with measuring equipment and proper clearances let them do it. They can also check the head and block for cracks. Disassemble the engine and bring them the head (assembled), block, pistons, crank, rods, flywheel, crank pulley. Be sure you mark or notice which way the rods and pistons are assembled, take picutures. Let the machine shop rebuild the head, measure the cylinders and pistons, and crank. They can tell you if it will need new pistons and a rebore. Have them balance the rotating mass while you have it apart too. Also you might want to have them clean up the exhaust and intake manifold, oil pan, front timing cover, and valve cover prior to reassembly. After all machine work is completed, assemble per the manual. Be sure to plastigage the crank and rod clearances and use good assembly lube. Also, replace the oil pump and make sure the oil pressure spring is installed correctly. Replace the crank sprocket and timing sprocket and timing chain. Use a tii head gasket on reassemly and Permantex Aviation #3 gasket seal (if you can find it). When you go to start it, use standard 30 wt oil. Run it for about 15 min. then change filter and put in frest 30 wt. Use this for 500 mi. during break in. Also fill it up with 50/50 coolant mix. If you are in a cold climate, a 80C thermostat is ok, however if it gets hot a 71C would be the one of choice. Now would be a good time to upgrade that radiator to a 3 core too.
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