Now lubricate the end of the pickup tube and the oil pump counterbore, then install the pickup using an installation tool such as this one from Goodson. Label each part upon removal or use a disassembly tray like those from Goodson or Crane Cams. Slowly rotate the crank clockwise normal rotation until the lifter raises precisely the indicated amount. Mount a dial indicator on the block, with the plunger riding on the edge of the lifter, parallel to the lifter bore. Then of course there are additional sealant compounds and cements. Step-10: Remove Accessories and Mounting Brackets If your engine is so equipped, begin accessory removal by unbolting the air-conditioning compressor and its mounting bracket. Ours opened at 26 degrees, just as its card noted.
Step-48: Remove One-Piece Rear Main Seal If your small-block was manufactured after 1986 and uses a one-piece rear main seal, perform this step; otherwise skip to Step 49. Our engine repair manuals also greatly benefit professional mechanics by serving as a reliable resource to refer to for the most thorough technical details and specifications. Each part must be properly removed, reconditioned or replaced, and reinstalled. We got ours from Snap-on. To use micrometers: Install bearings in the rods without any lubricant, tighten the caps to full torque in a vise with soft jaws. Step-41: Loosen Rod Cap Use a long-handled ratchet or breaker bar to loosen the two connecting rod nuts and unscrew them only a few turns.
Torque wrenches are essential for both fitting and final assembly. Visually inspect the end gap; the ends of the rings should be parallel. Place strips of Plastigage along the center of the journals, install the caps, and tighten to full torque. Plastic bins can easily be cleaned to store reconditioned parts, and they can be stacked to take up less space. However, a deep socket, open-end wrench, or adjustable pliers will remove most types.
Step-8: Check Crank Straightness If the crankshaft is not straight, bearing clearances measured in the upcoming steps will not be accurate. Note the seal type on your Work-A-Long Sheet, and then discard the old seal. If the chain contacts the cover, you should locate a deeper replacement cover, such as the aluminum cover offered by a variety of companies such as Milodon or install a narrower timing chain set. All you need are the right tools, patience, and a willingness to learn and think ahead. It is recommended that you replace these lock nuts, but try to keep the old ones for your visual inspection.
Then install the oil rails just to make sure they have plenty of end gap. Step-47: Remove Main Bearing Caps Make sure the main caps have been numbered before you remove them from the block see Step 38. If the piston pins in your engine are retained with a press fit the rods have not been machined for floating pins , the rods and pistons must be assembled by your machine shop before you can perform pre-assembly fitting. Step-27: Install Damper Puller Documentation Required You must use a 3-bolt puller to remove the vibration damper. With proper rocker geometry, the contact point should be in the middle of the valve tip when the valve is halfway open. This is why it is a good idea to take photos and notes before disassembly.
Step-50: Remove Two-Piece Rear Main Seal If your engine is a late-model design with a one-piece rear main seal, jump to Step 51. Make sure the lock rings are fully seated in the pistons. Next, fully compress a spring until it is solid retainer must be in place for dual springs. If not constrained by sanctioning-body rules, there is no replacement for displacement. Nevertheless, once the lash, best timing, and carburetor jetting were established, the assembly did exactly what it was supposed to, coming in at 502 hp at 6,400 rpm and 471 lb-ft of torque at 4,600.
Make sure all the manifold bolts have been removed. While the rings or ring grooves may break, the block will not be damaged. Also remove the dipstick tube by tapping it from the oil pan deck surface out. Although most engines are rebuilt without removing this plug, you cannot thoroughly clean the passage with it in place. We offer the best prices, free shipping across the 48 contiguous U. Next, remove the starter support bracket if your engine has one.
Raise the hoist just enough to take the slack out of the chain. On this engine, it was worth 8 hp and 6 lb-ft. Use a small, fine file—positioned flat against the valvestem—to remove the raised lip around the lock grooves. Fortunately, checking crank straightness is easy, requiring only a dial indicator set. Finally, slide the fuel-pump pushrod out of the block.
Pry the cover loose by inserting a gasket scraper or screwdriver between the cover and the block; gently pry until the cover comes free. Step-9: Main Bearing Clearances Checking main bearing clearance can be done with the same precision tools used in Step 7. Use small bins for small-part storage; use large bins to keep exhaust manifolds, oil pans, cylinder heads, and other large components off your shop floor. Measure and record this solid height, sometimes called stack height ours is 1. Goodson offers a helpful tray just for valvetrain disassembly. These springs are strong enough to keep the valve closed, yet light enough to not put much pressure on the new lifters or cam lobes while you check your specifications. Break all the head bolts loose, then go back with a short-handled ratchet and remove all but two bolts in each head.
Be ready to catch the piston before it drops to the floor. Manuals include everything from testing procedures and prepping and cleaning components to steps on how to completely disassemble engines and assess the health of individual parts. Continue rotating the crank clockwise until the lifter returns to the same tappet lift, but on the closing side of the lobe if you miss it, back up and come at it again, always from the clockwise direction. Note: If the crank slot is enlarged or the key is loose, the crank may be unusable more on this in Chapter 3. Set the oil pan on the block; it should sit flush without a gasket. Most machine shops remove and replace these pins as a matter of course when machine work is performed.