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

1.6 rocker install & lt4 valve springs

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Old 06-07-2008, 09:45 AM
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1.6 rocker install & lt4 valve springs

I'm planning on doing my rockers and valvesprings today. I have a couple questions.

Would it make more sense to leave my car up on my rhino ramps since I have to get at the crank pulley to rotate it and line the arrow up?

To manually rotate the crank, do I use a socket on that bolt in the center of the crank pulley, or do I turn it by hand.

Thanks guys. If I have any other questions during the install I'll post in this thread.
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Old 06-07-2008, 10:04 AM
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If you can turn it by hand, then you must be arm wrestling champ of the universe, haha.

Use a socket, but if you take the belt off and at least some sparkplugs out, it will make it a lot easier.

I didn't have mine on ramps because it would make it very hard to get to the rockers from the top. You can turn the crank from the top, though.
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Old 06-07-2008, 10:10 AM
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haha that is what I thought. Thanks
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Old 06-07-2008, 11:39 AM
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I'm trying to figure out if im at 1 TDC or 6 TDC with the arrow at 12 oclock.

I rotated the crank clockwise looking at it from the front of the car, and the arrow past 12 oclock. I could see the #1 cylinder intake valve opening. That should mean I am at #6 TDC right? Cylinder 6 should be firing and 1 should fire on the next 360*?
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Old 06-07-2008, 12:10 PM
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when i was adjusting my valves, i had the 2 mixed up. i thought i had 1 tdc but was actually 6. just make sure. if u have the wrong one up, you'll find out when u go to move the crank to the next piston.

i had my pulley off when i did mine and used longer bolts and pry bar to spin the hub
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Old 06-07-2008, 12:27 PM
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Originally Posted by ttop1986
I'm trying to figure out if im at 1 TDC or 6 TDC with the arrow at 12 oclock.

I rotated the crank clockwise looking at it from the front of the car, and the arrow past 12 oclock. I could see the #1 cylinder intake valve opening. That should mean I am at #6 TDC right? Cylinder 6 should be firing and 1 should fire on the next 360*?
thats correct. you are at #6. turn the crank one full rotation and you will be at #1
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