Trying to remove engine- Flexplate won't spin - LS1LT1 Forum : LT1, LS1, Camaro, Firebird, Trans Am, Engine Tech Forums

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post #1 of 42 (permalink) Old 07-13-2008, 03:41 PM Thread Starter
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Trying to remove engine- Flexplate won't spin

So I just got a '94 Trans Am with a blown engine- so I have to pull it and rebuild it. The only places the engine is connected at are the engine mounts, the two lower bellhousing bolts, and the flexplate. I can't seem to rotate the flexplate at all to get to the other bolts on it. It's not that I'm weak- at least I don't think I'm weak (6'2" 195lb. 19yrs old that works out a lot- please don't email me- not looking at dating any of you)- so I don't see a problem why the flexplate won't spin at all. Some help please!
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post #2 of 42 (permalink) Old 07-13-2008, 03:42 PM Thread Starter
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Trying to remove engine- Flexplate won't spin

So I just got a '94 Trans Am with a blown engine- so I have to pull it and rebuild it. The only places the engine is connected at are the engine mounts, the two lower bellhousing bolts, and the flexplate. I can't seem to rotate the flexplate at all to get to the other bolts on it. It's not that I'm weak- at least I don't think I'm weak (6'2" 195lb. 19yrs old that works out a lot- please don't email me- not looking at dating any of you)- so I don't see a problem why the flexplate won't spin at all. Some help please!
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post #3 of 42 (permalink) Old 07-13-2008, 07:19 PM
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post #4 of 42 (permalink) Old 07-13-2008, 07:35 PM
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How exactly are you trying? A flexplate turner or by the front crank bolt? Get a 1/2" breaker bar w/ a 5/8's socket and turn that mutha.
post #5 of 42 (permalink) Old 07-13-2008, 09:21 PM
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Unless the blown motor = locked up motor.


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post #6 of 42 (permalink) Old 07-13-2008, 10:48 PM
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well if the motors blown it could be seized up
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post #7 of 42 (permalink) Old 07-13-2008, 10:54 PM
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If the motor is indeed locked up, you'll have at least one way to get the motor to spin over.

Usually if the motor is locked due to bearings seizing then its usually the main bearings. Try dropping the oil pan and undoing the main caps 1 at a time and take out the top bearing. So at least the bottom of the crank journal is still in the bearing. That should get you turning the motor over. Unless its a rod that has siezed..which try to unbolt it and knock the bearing out.
post #8 of 42 (permalink) Old 07-14-2008, 01:27 AM Thread Starter
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Yes spark plugs are out.

I tried to turn the flexplate itself with a pair of gloves and two hands. Then i tried to turn it at the front of the engine.. no luck either way.

I'll drop the oil pan and all that when i have some free time in the next couple days. Thanks for the help.

(and i guess a pushrod blew-or came undone from a rocker- but i that's just what the guy said, so take it for what it's worth.)
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post #9 of 42 (permalink) Old 07-14-2008, 01:53 AM
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Are you looking to save the engine as a rebuild or just want it out of there? I would try a flywheel wrench or as said above,a breaker bar on the front of the crank. if it comes down to it,you could always pull a head and beat the top of the pistons untill the engine rolls over. That is of cousre if the engine is worth nothing more to you then a paper weight,other wise...dont do it lol. Good luck!

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post #10 of 42 (permalink) Old 07-14-2008, 11:46 AM
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what is wrong with the motor to begin with? you say its blown, but not why. could be a seized block, a dropped valve, seized bearings, or any number of other things. have you pulled the tranny all the way off?

From the past 10 years about 90% of Ford trucks are still on the road, the other 10% made it home.
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post #11 of 42 (permalink) Old 07-14-2008, 11:47 AM
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motor blown.... probably seized... wont spin...

From the past 10 years about 90% of Ford trucks are still on the road, the other 10% made it home.
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post #12 of 42 (permalink) Old 07-14-2008, 02:49 PM
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Is the tranny in neutral? If its an auto it does not matter. But I have seen alot of people call a flywheel a flex plate.

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drivers side is a dream....passenger side on the other hand...i lost 2 screwdrivevers and a socket when i chucked them in the woods

u can do it



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post #13 of 42 (permalink) Old 07-14-2008, 06:12 PM Thread Starter
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What does seized up mean exactly?

and it's an auto.. and in neutral..
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post #14 of 42 (permalink) Old 07-14-2008, 06:28 PM
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Siezed up means that either the piston(s) are jammed up in the cylinders or the bearings are stuck to the crank. It is just a term used to describe the motor not being able to be turned.

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Originally Posted by 94FormulaBird View Post
drivers side is a dream....passenger side on the other hand...i lost 2 screwdrivevers and a socket when i chucked them in the woods

u can do it



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post #15 of 42 (permalink) Old 07-14-2008, 08:29 PM
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I think he really doesn't know why its blown. The previous owner said something but he's not sure. Hell before I put to much time/effort into a car that had something wrong with the motor i'd definatly pull it out and go through her.
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