Transmission seized to engine??? - MY350Z.COM - Nissan 350Z and 370Z Forum Discussion

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2003-2009 Nissan 350Z

Transmission seized to engine???

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Old 01-12-2018, 09:18 AM
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Sandermaz
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Default Transmission seized to engine???

So I was quoted like a grand to get my clutch replaced so I thought I would do it myself. I'm at the stage where everything is removed, all the Bell housing bolts, clutch cylinder, all the wires, all the braces, however my transmission will not come off I wonder is it seized to the engine or have I forgotten something. Need help thanks
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Old 01-12-2018, 12:26 PM
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I had that problem when we pulled an engine from a G35. took us a while to seperate the two. My guess is, its just stuck on. Work it some more.
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Old 01-12-2018, 12:42 PM
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Always post which model and year Z you have with a question like this. It saves time between guessing which drivetrain combo you have. My guess is you've still got pressure on the input shaft and will have to use a tranny jack to shift the gearbox back-and-forth before it comes loose.
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Old 01-12-2018, 05:12 PM
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Update I have a 2004 enthusiast and I spent another 3 hours trying to remove it, I have a tranny Jack under it and it won't move. Do I have to do something specific with the shifter????
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Old 01-12-2018, 05:40 PM
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Tell me you already removed the shifter, starter and all ancillary parts?
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Old 01-13-2018, 05:16 AM
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My guess is you missed a bolt, but i have also had to giggle the **** out of the trans to get them to seperate before
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Old 01-13-2018, 06:31 AM
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there are several bolts. Check the FSM. Some point towards the rear of the car and others to the front.

You must have missed one. Inspection cover, top 2, starter bolts, lower 2 etc. Also drop the drive shaft too.
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Old 01-13-2018, 11:50 AM
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You have to have missed some bolts. I did my clutch and flywheel two years ago and once I got all of the bolts off it easily split. There are 2 bolts on top that could be missed.
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Old 01-13-2018, 03:23 PM
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Sandermaz
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I hav the starter drive shaft and shifter all out what cud it be I have all the bolts out ik because i put them in a diagram of the Bell housing and I hav all 13 or whatever. This is gonna be the end of me I have spent more time on this than dropping an engine
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Old 01-13-2018, 03:58 PM
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Time to bust out pry bar while a friend giggles tranny.....and not caitlyn jenner
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Old 01-14-2018, 04:50 AM
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Watch what he does to see if you missed anything.
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Old 01-14-2018, 09:55 AM
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Mine came apart easily when I did the job.

Maybe try to carefully pry it where the flywheel sensor was bolted, the hole there be big enough to fit a decently thick metal bar and pry the tranny off slowly, but be careful so you don't bung anything up.
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Old 01-14-2018, 10:24 AM
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Lower the tranny jack a little and hit the side of it with a rubber mallet. It shouldn't be that difficult if all the bolts are out.
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Old 01-14-2018, 10:25 AM
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Dumb question did you remove the transmission cross member?
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Old 01-14-2018, 11:17 AM
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There are two dowels on either the block or the tranyy (forget which), could it be that you are applying too much pressure on those joints, through the use of the tranny jack?

Try lower the tranny jack a bit maybe that will let it come loose.

How many miles on the car?

If you think its fused on, spray some PB/bolt loosener around the circumference on the joint and let it soak for a bit.
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Old 01-14-2018, 05:11 PM
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You have a total of 12 bolts. 8 of them are transmission to engine and 4 are engine to transmission.

Most likely your dowel pins are stuck in. It took 3 of us over 2 hours to get mine apart. It was damn stuck. Like it wouldnt budge! Eventually it did separate.
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Old 01-14-2018, 08:24 PM
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Mine stuck a bit coming out the first time
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