NOTEStep 1: Tighten all bolts to 22 ft. lbs.Step 2: Tighten all bolts to 51 ft. lbs.Step 3: Loosen all bolts, in reverse torque sequence, by 180°Step 4: Loosen all bolts, in reverse torque sequence again by 180°Step 5: Tighten bolts #1 and #2, in the torque sequence, to25 ft. lbs.Step 6: Tighten bolts #3,4,5 and #6, in the torque sequence, 11 ft. lbs.Step 7: Tighten all bolts, in torque sequence, by 80-90°Step 8: Tighten all bolts, in torque sequence, again by 80-90°
{| |- | NOTE Step 1: Tighten all bolts to 22 ft. lbs. Step 2: Tighten all bolts to 51 ft. lbs. Step 3: Loosen all bolts, in reverse torque sequence, by 180° Step 4: Loosen all bolts, in reverse torque sequence again by 180° Step 5: Tighten bolts #1 and #2, in the torque sequence, to25 ft. lbs. Step 6: Tighten bolts #3,4,5 and #6, in the torque sequence, 11 ft. lbs. Step 7: Tighten all bolts, in torque sequence, by 80-90° Step 8: Tighten all bolts, in torque sequence, again by 80-90° |}
Tighten the bolts to 60 nM (44 ft. lbs.) in sequence. Tighten the bolts to 60 nM (44 ft. lbs.) in sequence.
Nothing good. Tighten the bolts and this becomes a mute issue.
For the 3.9 head bolts (streach bolts) only use new bolts and follow this sequence: Tighten to 20nm in correct sequence. Then tighten each bolt 90 deg turn in correct sequence. Wait 15 minutes. Then tighten each bolt a further 90 deg turn in correct sequence. Done.
for 88 thru 95 Step 1. Tighten all 10 bolts in sequence to 14 ft/lbs (20 Nm). Step 2. Tighten all 10 bolts in sequence to 36 ft/lbs (49 Nm). Step 3. Tighten all 10 bolts in sequence to 49 ft/lbs (67 Nm). Step 4. Tighten bolts 1 and 2 to 49 ft/lbs (67 Nm) again.
I just did an intake manifold job on a 1999 5.7L suburban. The intake manifold to the heads, note this sequence....from front to back on the passenger side 7,1,3,5......from front to back on the drivers side 8,4,2,6. Tighten # Tighten the bolts on the first pass in sequence (1-8) to 3 N·m (27 lb in). # Tighten the bolts on the second pass in sequence (1-8) to 12 N·m (106 lb in). # Tighten the bolts on the final pass in sequence (1-8) to 15 N·m (11 lb ft). Use Loc-tite blue on these bolts and follow the above sequence and torque levels.
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Install the lower intake manifold to the engine. Apply sealer, GM P/N 1052080 or equivalent, to the lower intake manifold bolts.Install the lower intake manifold bolts. Tighten the bolts in three steps:TightenTighten the bolts on the first sequence to 8 N·m (71 lb in).Tighten the bolts on the second sequence to 12 N·m (106 lb in).Tighten the bolts on the final sequence to 15 N·m (11 lb ft).I this is what you are looking for.GMmechanic@gmail.com
Begin by tightening the head bolts on each corner of the head. Next, tighten the center head bolts. Tighten the bolts on each end of the head and move towards the center.
Tighten the cylinder head bolts in three steps using the sequence provided : ==== ==== # Step 1- Snug tighten M12 cylinder head bolts, in sequence, to 34 N·m (25 ft. lbs.) and M8 bolts to 20 N·m (15 ft. lbs.) torque. # Step 2- Tighten M12 cylinder head bolts, in sequence, to 54 N·m (40 ft. lbs.) and verify M8 bolts to 20 N·m (15 ft. lbs.) torque. # Step 3- Turn M12 cylinder head bolts, in sequence, 90 degrees and tighten M8 bolts to 34 N·m (25 ft. lbs.) torque.
The Honda had bolt tightening sequence begins with the head bolts on each end of the head. Tighten the head bolts moving to the center, alternating from and to end.