LS2 main cap torque sequence
Thread Starter
Cruising
Joined: Mar 2006
Posts: 10
Likes: 0
From: Calgary Alberta
LS2 main cap torque sequence
I'm just trying to find more info on the torque sequence for the main caps, and do the bolts need replacing? I here no, but need to be sure.
What's a good Gen 3/4 engine building book? Author?
What's a good Gen 3/4 engine building book? Author?
Last edited by smallblocker; Feb 8, 2007 at 02:06 PM. Reason: spelling
Burning Brakes
Joined: Jul 2006
Posts: 849
Likes: 2
From: Southern Florida
The manual said to replace the side bolts because of sealer that's applied to the threads. But here is the torque info...
Tighten the M10 bearing cap bolts (1-10) a first pass in sequence to 20 N·m (15 lb ft).
Using a plastic-face hammer, tap the crankshaft rearward, then forward in order to align the thrust bearings.
Tighten the M10 bolts (1-10) a final pass in sequence 80 degrees using the J 45059 .
Tighten the M10 studs (11-20) a first pass in sequence to 20 N·m (15 lb ft).
Tighten the M10 studs (11-20) a final pass in sequence 51 degrees using the J 45059 .
Tighten the bearing cap side M8 bolts to 25 N·m (18 lb ft). Tighten the bolt on 1 side of the bearing cap and then tighten the bolt on the opposite side of the same bearing cap.
Tighten the M10 bearing cap bolts (1-10) a first pass in sequence to 20 N·m (15 lb ft).
Using a plastic-face hammer, tap the crankshaft rearward, then forward in order to align the thrust bearings.
Tighten the M10 bolts (1-10) a final pass in sequence 80 degrees using the J 45059 .
Tighten the M10 studs (11-20) a first pass in sequence to 20 N·m (15 lb ft).
Tighten the M10 studs (11-20) a final pass in sequence 51 degrees using the J 45059 .
Tighten the bearing cap side M8 bolts to 25 N·m (18 lb ft). Tighten the bolt on 1 side of the bearing cap and then tighten the bolt on the opposite side of the same bearing cap.
Thread Starter
Cruising
Joined: Mar 2006
Posts: 10
Likes: 0
From: Calgary Alberta
Thanks man. That's perfect. I suppose I can just goop the side bolts?
Any info on the crank exciter ring? I hear no more than .020" runout. Mine has .007 I haven't asked the machine shop if they removed it for grinding yet. I hear there's a special tool for clocking it to the crank.
Any info on the crank exciter ring? I hear no more than .020" runout. Mine has .007 I haven't asked the machine shop if they removed it for grinding yet. I hear there's a special tool for clocking it to the crank.
