Help! flywheel bolt problem

[Javi802]

ok so lastnight me and 2 friends were trying to get my flywheel off, my friend unbolted 5 of the six, in a sequence, but he actually took them out in a sequence, not just let them break free...

Now there is one left on, that we just cant seem to get off.. Did him taking them completely off cause this last one to have all the pressure left on it?

Could i put the 5 back on and tighten them and retry taking the one we had trouble with off first?

any help would be appreciated, thanks guys

[300ZXttZMAN]

Guessing you have an S13?

[Javi802]

Yessir
An 89 coupe with a 98 ka swap

[IanS]

It really shouldn't make much of a difference. I would suggest putting the bolt completely opposite the stuck one back into the flywheel. Tighten it, and retry loosening the other. Its no sure thing, but its work a shot.

Chances are, you just got lucky, and left the one bolt with extra loctite on it till last.

Find an impact, and it should come right out.

[Javi802]

thats the thing, we tried an impact gun, cheater bar, really everything. Friend thinks the gun he had is bad, also dont have a compressor with consistent pressure.

Im gunna try and screw some bolts back on and get that sob after work today

[Javi802]

and should i replace all 6 bolts with new ones? If not, should i at least replace the one im having troule with?

[300ZXttZMAN]

Is the engine in the car or out side?

[Javi802]

the engine is still in the car.
And i went to Courtesy Nissan and bought the bolts anyways, while there i was talking with a man who said i should torch the flywheel around the bolt..

Anyone done this before? is it safe and does it work?

[TaiLuu]

Are you going to get a new flywheel ? Torching might warp the wheel.
Have you tried any lub or bees wax on it? Smack the bolt with a rubber mallet see if that helps.

[alms24sebring]

I would say its ok to use a torch but be careful not to overheat it too much to prevent warpage. You might also need a new rear main seal if you do that cuz itll likely brun up.

But, before that I would get good full pressure on the compressor and try another gun if you can. Use PB Blaster and let it sit. Its always the very last bolt isnt it lol.. I hate that.

[IanS]

Could be that it is cross threaded. I once pulled the heads off a subaru. One bolt head broke. With the head off the engine we welded a new head on the bolt and start cranking on it. Ended up cracking a piston sleeve and taking a chunk out of the water jacket.

Cross threading happens at the factory too.

[alms24sebring]

^ daaaam, Ive seen head studs break but never crossed from the factory. S*** happens. New engine and $4000 later...

[C-Kwik]

The solution is actually quite simple. Thread two of the bolts back in, preferably two across from each other. Grab a long rod and use it as a lever between the 2 bolts while you loosen the last bolt. Make sure the bolts are threaded in deep enough to prevent it from bending.

[Javi802]

Well, guys, thanks a lot for all the replys, but we finally got the sob off!

What we did was use a little air saw to cut a straight line through the center of the bolt( like cutting a pie in half) until it was flush with the flywheel. Making the bolt weak. We then hammered an 18mm socket on to it, and used the impact gun, then ta da, came right off!

Buttt... Now it's a b**** getting the transmission back on. Lol. But we WILl get it back on!!

Again, appreciate all the options, thanks a lot

[Javi802]

Forgot to mention, after trying so long to get the flywheel off, we eventually rounded off the 19mm.. That's why we hammered an 18mm on.

Another thing, I don't know if anyone has done or heard of this.. But when removing your pilot bushing you can get wet paper towels and stuff it, then use something with a smaller circumference than the bushing to hammer in the paper towels, squeezing the water out of the towles putting pressure on the pilot pushing it out.. Works like a charm. That's if you don't have a puller

[alms24sebring]

Cool, I havent heard of sawing the head like that. That would make me nervous in breaking it off. Also I did see a vid of the wet paper towel trick. Its awesome and easier than a puller IMO, especially for stupid AT 240 bearings that are a b**** to get out. Make sure the clutch is lined up and it should slide in. Never force it in by driving bolts into the engine

[C-Kwik]

You can also use grease and a dowel to get a pilot bushing/bearing out.

[Red coupe]

You can also use grease and a dowel to get a pilot bushing/bearing out.

Probably a bit better idea then lint and moisture.

[alms24sebring]

Hell no. You want the pilot bearing to stay still. You never get all the grease out. Water dries up and the small dusty residue can be blown out

[Javi802]

And yet ANOTHER question.

I am just having no luck with getting my transmission back in.

The input shaft keeps coming less than 1/4in from going in the hole (whatever its called) but it just won't line up. Keeps hitting the firewall before it can line up.

We've turned it every direction, also tried lifting the front of the oil pan to make the engine angle down.

Should i unbolt the entire exhaust and have someone press down on it?

Ive been at it for hours, and am really loosing my mind.
I feel like crying lol

[Razi]

Same thing happened to me.
I did everything I could to tilt the back of the engine down.
Good luck!

[TaiLuu]

Unbolted rear motor mount and try.

[Javi802]

what finally worked for you razi?

[Razi]

I loosened my engine mounts and unbolted my catback from my downpipe.
Then I jacked up the front of the engine a lot and with some fiddling and yelling, I got it in.

[alms24sebring]

this^

[C-Kwik]

Have you tried flipping the transmission upside down? Its been years since I've done a 240sx transmission, but this is one step I know I did. I can't recall if I jacked up the front of the engine or not. If I were to do that though, I would probably leave the engine mounts bolted on. You only want it to pivot slightly. Unbolting them can cause them to lift up which could reduce the clearance some.

[C-Kwik]

Hell no. You want the pilot bearing to stay still. You never get all the grease out. Water dries up and the small dusty residue can be blown out

Once the bushing is out, you can clean it. But its unlikely the bushing would move anyways. Its an interference fit so any grease on the surface would likely be pushed back and its unlikely the friction between the surfaces could be overcome. I use a tool anyways. The local parts store rents them for free...

[Javi802]

yessir i have tried flipping it completely upside down, sideways, every direction. Its either the firewall its hitting, or more towards the shift knob hole where the transmission is hitting. Ive given up and found a guy that has a shop who will do it for 100 bucks.

For anyone that doesn't know, AAA is a great investment. $300 a year and they will come to you and tow your car anywhere you need from anywhere you are!

Thanks for all the tips though, i will definitely consider them all next time i have to change my clutch, hopefully by then i have all the tools i need to do it more easily.

Oh and another quick question, in order to post pics do i still HAVE to create an account with another website, such as photo bucket? Id hate to have to do that lol. But id like to share pics of my car with y'all!

[Razi]

For quick image hosting you can use www.imgur.com

[Javi802]

Thanks razi.

I posted a new thread in 240 general section with pics if you'd like to check it out.