Manual Transmission T56 | T5 | MN12 | Clutches | Hydraulics | Shifters

What I Broke

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Old Apr 30, 2009 | 01:50 PM
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Default What I Broke

Trying to figure out exactly what I broke here..

So there I was screwing around doing a burnout infront of a friends house, started in first, quick-shifted into second to keep the tires roasting and all we heard was a pop and I had no second.

I'm thinking I sheared all the teeth off of the Gear itself or broke them off. I still have first, third and everything else so I know the Countershaft isn't broken.

It's a stock T56..well what's left of one.

Any ideas?
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Old Apr 30, 2009 | 01:53 PM
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you solved your own problem. Second is gone. Any other gears?
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Old Apr 30, 2009 | 02:47 PM
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The rebuild will be full of cursing moments. Good luck. Should be fun.
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Old Apr 30, 2009 | 03:58 PM
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You ripped the engaugement teeth off the 2nd gear. The later model units have longer teeth on them. I just did one exactly like it the other day in a 99 Camaro.
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Old Apr 30, 2009 | 04:37 PM
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Originally Posted by NBM-LS1
Any other gears?
No..just second..which brings me to the conclusion of it being the Gear itself on the Mainshaft.

Originally Posted by thesource
You ripped the engaugement teeth off the 2nd gear. The later model units have longer teeth on them.
That's what was in my mind when I made the post, I didn't know there was an actual name for them.

Do the Gears that are available as replacements have the longer teeth?
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Old May 1, 2009 | 07:16 AM
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The revised gears are the only ones available.
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Old May 1, 2009 | 07:30 AM
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Why would you ever shift a manual car on the burnout?

I have made over 450 passes in 6spd cars and never did that... I never felt like that would be good for the trans.

Dude, you dun-fucked-up...

I would sugest never doing that again...

But either way, you can have an educated guess as to what you broke, but you will not know untill you take it apart... so get to it.
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Old May 1, 2009 | 08:34 AM
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^^I'm not talking about on the Track.. I wanted to grab it in 2nd to get some nice smoke out of the Tires.. just some fun screwing around. Didn't know there was a "Correct" procedure for it..

In theory if you think about it..there is more stress when the car is pulling in 2nd with traction than smoking the tires cause the tires are spinning..that's just the way I see it though.
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Old May 1, 2009 | 09:39 AM
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I did the same exact thing while banging into 2nd, ended up being the teeth where the slider grabs onto the gear while shifting. They look like little 1/4" teeth that have been sheared off, pretty easy and cheap fix if you do it your self. And a reason to put the billet synchro keys and brass sliders in her since you will have to pull all of that off anyways. If you end up doing it your self I have a extra set of shims for the mainshaft/input shaft play if you want them when you put it togethor. They are used to set the tolerances up tighter while assembleing it and I ended up with a extra set. Also when you pull it apart check the splines where the 5th/reverse gear rides, I know you like to roll her out on the highway and there is a lot of load on 5th gear. Mine had all the splines worn halfway over and I just happened to catch it while putting it back togethor. I also put the shaft in the freezer before pressing the 1-4th gear sets on, it helped them slide on easier from being a little smaller. PM me on those shims if you want them Ill take care of since you need them anyways. Wait until you see your magnet in there with all the carnage chunks hanging out on it. Ill find you pictures of this gear and magnet for a good laugh. Also I have PDF of the 6speed break down I can email you.
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Old May 1, 2009 | 09:53 AM
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Im sorry I meant to say bronze fork pads $70 for 1-4 and 5-6 ones, and $100 for the billet 3-4 keyways. $50 3-4 steel shift fork and I think I had about $130 in my second gear. All in all its not to much to build it up a little while your in there anyways. You could also drop in the carbon blockers for the synchros if you have the extra money. After doing all this to mine I can bang gears with my pinky finger its so much smoother than stock with a pro 5.0 shifter.
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Old May 1, 2009 | 10:00 AM
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Also take a look at your 1-2nd synchro and see if you damaged the splines inside it if not you need that so add another $130 and also thoses carbon blocker rings are only $25 a pop. I wish you lived close to OHIO I would just help you rebuild it since I have followed the build of your car over the years.

Josh
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Old May 1, 2009 | 11:08 AM
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Just rebuilt mine myself to, not to bad. Put new 1-2 sych, 3-4 sych, 5-6 sych, carbon rings, second gear, bronze pads, 3-4 steel fork, billet keys. Now just waiting on my clutch disks to get back.
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Old May 1, 2009 | 11:33 AM
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Originally Posted by the_merv
^^I'm not talking about on the Track.. I wanted to grab it in 2nd to get some nice smoke out of the Tires.. just some fun screwing around. Didn't know there was a "Correct" procedure for it..

In theory if you think about it..there is more stress when the car is pulling in 2nd with traction than smoking the tires cause the tires are spinning..that's just the way I see it though.
Im talking about anywhere...

In the burnout box I am already in 2nd gear. rev it up to about 4000 and slip the clutch out. I know its after going through water, but I always do the burnout in 2nd gear, not first then shift to 2nd.

The theory might be correct, but in the time you shift, your car is not moving, so the rear tires slow down significantly more then they would going down the track. The added shock of shifting the car when the transmision has slowed down so much is what broke it.

I asked that question of my drag racing friends when I first started about 7 tears ago, and they all told me "HELL NO" never shift in a burnout...
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Old May 1, 2009 | 01:41 PM
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Thanks for the tips guys.. from the looks of it, the rebuilding of it doesn't seem that complicated. All I would need is a Claw Puller and extend it, and a press.

I'm considering doing it myself..
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Old May 1, 2009 | 04:03 PM
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Originally Posted by the_merv
Thanks for the tips guys.. from the looks of it, the rebuilding of it doesn't seem that complicated. All I would need is a Claw Puller and extend it, and a press.

I'm considering doing it myself..
re-building a T56 is easy. Just get a large work surface, and lay our all your pieces one by one, in a row or column so you acn assemble it by simply working backwards. Makes it a lot easyer because all those damn retention rings and bearings start to look a like if you have them all in one big box or something.

Im sure you can do it.

Take it apart, clean it, see what you fucked up, order it, put it back together slowly. Make sure you do not have any "extra" parts. LOL

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Old May 1, 2009 | 06:24 PM
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Yea.. I hear ya about the extra parts..lol

I figure I should be able to accomplish this..I don't see what is too hard about it. I built what I have now so might as well tear into the Tranny.
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Old May 1, 2009 | 09:23 PM
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i got mine done by Joey at Tickperformance...good to 750 hp and it cost me 1300 shipped
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Old May 2, 2009 | 12:22 AM
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Yea I've been thinking about Tick aswell..but mine is going to cost around $1450 because of the broken things that are in my Tranny.
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Old May 2, 2009 | 01:21 AM
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i can't help notice your sig says tremec t-56, and i may be wrong, but isnt the t-56 made by borg warner? because i know the t-5 is. sorry its off topic.
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Old May 2, 2009 | 02:11 AM
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you mean your not supposed o have extra parts? lol
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