C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Need help I'm stuck

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Old Jul 29, 2011 | 08:11 PM
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Default Need help I'm stuck

Trying to torque the damper bolts on my 92 ..can't figure out a way to stop it from turning. I've tried to get the flywheel cover off but just can't get the little bolt off that up near the starter..and I've given up on that approach..just so much time you can lie on your back in the driveway..well at my age anyway...is there anyway to hold this damn thing?????? Will holding the center bolt be enough..if so what size is it??

Last edited by mfi; Jul 29, 2011 at 08:25 PM.
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Old Jul 29, 2011 | 08:32 PM
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If you have a manual, put it in first an have someone stand on the brakes while you torque the bolt. If an auto, use a flywheel turning tool.
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Old Jul 29, 2011 | 08:41 PM
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can't...get..to...the ..flywheel..I can't get the last damn bolt off..tried with every extension..socket..swivel I have...
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Old Jul 29, 2011 | 10:33 PM
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If your crank pulley & HD is like mine, it will have holes around the outside rim used for inserting balancing weights when the engine was assembled. I found they are also a good place to hold the pulley by. Get a 3 foot long shaft of wood or metal and put 2 or 3 bolts through it at one end that line up with holes in the pulley. When the bolts go through the shaft and into the pulley holes it's like having a lever attached that you can hold while tightening the pulley bolts.
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Old Jul 29, 2011 | 10:56 PM
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A strap wrench will work too.
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Old Jul 30, 2011 | 08:21 AM
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Originally Posted by biggrizzly
A strap wrench will work too.
Might damage the rubber..like the idea of the outer hole device..what about the crank bolt..its probably on there with more than 60 lbs of torque...
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Old Jul 30, 2011 | 08:35 AM
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Removing the starter will provide access to the flywheel.
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Old Jul 30, 2011 | 08:38 AM
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Originally Posted by Churchkey
Removing the starter will provide access to the flywheel.
do you know how rare folks that have your common sense are?
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Old Jul 30, 2011 | 09:11 AM
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Use an impact, if you have one. Obviously you will need extension and universal.
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Old Jul 30, 2011 | 09:37 AM
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I don't remember this being that difficult. I'm pretty sure that I just held the center bolt and torqued the three other bolts independently. Also, the rubber is way strong enough to use a strap wrench.

I have taken the damper off several times over the past couple years and its just not been a real issue to get it back on. Good Luck
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Old Jul 30, 2011 | 12:39 PM
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Originally Posted by biggrizzly
I don't remember this being that difficult. I'm pretty sure that I just held the center bolt and torqued the three other bolts independently. Also, the rubber is way strong enough to use a strap wrench.

I have taken the damper off several times over the past couple years and its just not been a real issue to get it back on. Good Luck
Yup..thats the plan...
I've removed enough crap on this thing to even think about the starter...
what size is the center bolt? if you remember...all this mixed metric/sae on this car is nuts...
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Old Jul 30, 2011 | 12:44 PM
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Originally Posted by mfi
can't...get..to...the ..flywheel..I can't get the last damn bolt off..tried with every extension..socket..swivel I have...
If it is like my 93 you need to remove the starter in order to remove flywheel cover anyway. Then you can get to that let bolt.
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Old Jul 30, 2011 | 12:46 PM
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Originally Posted by 93cruiser
If it is like my 93 you need to remove the starter in order to remove flywheel cover anyway. Then you can get to that let bolt.
Going to try the center bolt..working under that thing is a bitch...some things you try to avoid at a certain age.....have to buy a lift some day...
ah..found this..http://www.lt1engine.com/tech/remove...lt1-crank-hub/

Last edited by mfi; Jul 30, 2011 at 12:54 PM.
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Old Jul 30, 2011 | 01:32 PM
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Originally Posted by mfi
Going to try the center bolt..working under that thing is a bitch...some things you try to avoid at a certain age.....have to buy a lift some day...
ah..found this..http://www.lt1engine.com/tech/remove...lt1-crank-hub/
Hmmm, well whatever. You never metioned anything about needing to take the hub off in the original post, only the harmonic dampener/crank pulley.
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Old Jul 30, 2011 | 02:51 PM
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Originally Posted by dewfall
Hmmm, well whatever. You never metioned anything about needing to take the hub off in the original post, only the harmonic dampener/crank pulley.
I'm not taking the hub off..just have to tighten up the damper...wanted to know size of bolt..
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Old Jul 30, 2011 | 08:07 PM
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You guys make this hard. Ok, those holes for weights. Get a punch that fits and stick it one. Try to turn the damper bolts you are trying to loosen when that punch makes contact with the front crossmember it will hold and you can get the bolts loose. Works quite well for me.
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Old Jul 30, 2011 | 10:07 PM
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Pretty sure the hub's bolt is 5/8".
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