LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Whats the safest way to turn the crankshaft??

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Old 11-05-2003, 03:44 AM
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Whats the safest way to turn the crankshaft??

If I'm trying to turn it to put each cylinder at TDC for some valvetrain work... I don't like the idea of using a breaker bar on the crank pulley bolts, I don't like stripping bolts, it's like nails on the chalkboard. Any other way to do it that's a little safer???
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Old 11-05-2003, 07:55 AM
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Don't use the crank pulley bolts. Use a 5/8 standard socket and ratchet/breaker bar. You put the 5/8 socket in the center of the crank hub. Turn crank. Viola!
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Old 11-05-2003, 10:09 AM
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If you've got the motor out of the car, use a flywheel wrench. Otherwise, the socket in the crank snout works well too.
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Old 11-05-2003, 11:11 AM
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Make sure its in neutral too , before turning the crank bolt.
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Old 11-05-2003, 11:25 AM
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Originally posted by Brandon 95 Z28
Make sure its in neutral too , before turning the crank bolt.
Good point I made this mistake when doing my cam swap! Was like man this engine is hard to turn over. Then it hit me! Duh! Damn im an idiot!

Aaron
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Old 11-05-2003, 11:46 AM
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Originally posted by Brandon 95 Z28
Make sure its in neutral too , before turning the crank bolt.
Unless you're trying to break the balancer bolts loose!! I learned the hard way. Doh!
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Old 11-05-2003, 11:48 AM
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you dont need to put it in neutral when i pulled my motor and put it back in and had to turnt he crank it wasnt in neutral and it was easy, not hard to turn it but maybe its just my car i dont know, but thats how you do it.
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Old 11-05-2003, 11:51 AM
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Originally posted by 94 CAMRO Z28
Good point I made this mistake when doing my cam swap! Was like man this engine is hard to turn over. Then it hit me! Duh! Damn im an idiot!

Aaron
does this apply to the autos or just yall 6spds???
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Old 11-05-2003, 12:17 PM
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I would assume 6spds since an auto can sit in park with the engine running. A 6spd without the clutch in is trying to turn the wheels.

Aaron
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Old 11-05-2003, 12:26 PM
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Remove the spark plugs and it'll be much easier to turn the crank.
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Old 11-05-2003, 12:34 PM
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Touche' Forgot about that!
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Old 11-05-2003, 02:47 PM
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Pull the coil wire, hook up cheapy remote start button, neutral or park, parking brake set.

Bump starter to get your valves in proper position.

Why get all dirty and skinned up? JMHO
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Old 11-05-2003, 04:59 PM
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I was thinking of taking the spark plugs out but damn that would be a biotch... damn SLP shorties. How do you put the socket in the middle of the crank? You are talking about using the bolt?? That will strip the threads very easily with a breaker bar. The compression is whats really killin it. Just to get the timing chain dots to align I had to put the car in gear and rock it back and forth until they aligned...
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Old 11-06-2003, 06:33 AM
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Originally posted by 96 WS6
I was thinking of taking the spark plugs out but damn that would be a biotch... damn SLP shorties. How do you put the socket in the middle of the crank? You are talking about using the bolt?? That will strip the threads very easily with a breaker bar. The compression is whats really killin it. Just to get the timing chain dots to align I had to put the car in gear and rock it back and forth until they aligned...
Crank hub bolt is 75 ft lb.
It shouldn't take near that much to turn the engine over, even with plugs in?

Last edited by Mtrhds94Z; 11-06-2003 at 06:44 AM.
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Old 11-06-2003, 08:00 AM
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If using any bolts on the hub or pulley, just remember to go slowly. When you encounter resistance from compression, pause and the compression will bleed off. Then, it gets easier to turn again.
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