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Broke something last night at the track

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Old Jul 30, 2016 | 02:13 PM
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Default Broke something last night at the track

Installed a 2 step and came to test it out. Drove 60 miles to the track with no issues. Did my burn out and staged. Dropped the clutch and nothing, just sat there. Didn't hear a pop or anything mechanical. I don't have any gears, clutch feels fine, car rolls fine, nothing appears to be broken, no leaks.

Clutch is a Monster Twin LT-1.

Puzzled as to what it is. Input shaft, I would have heard it break? Slave cylinder gave out?

What do you guys think?
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Old Jul 30, 2016 | 04:56 PM
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Thats unusual that the car didnt attempt to move or make a sound. A drive line failure is 9 times out of 10 going to make itself known. If the slave failed the car would more than likely been stuck in gear rather than neutral.
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Old Jul 30, 2016 | 05:24 PM
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Originally Posted by k_garretson23
Thats unusual that the car didnt attempt to move or make a sound. A drive line failure is 9 times out of 10 going to make itself known. If the slave failed the car would more than likely been stuck in gear rather than neutral.
With the car running I can row all gears even without using the clutch.

So strange.
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Old Jul 30, 2016 | 05:47 PM
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Id look into a shifter issue. Possible the roll pin backed out and the cup is just slidding on the shifter rod.

Like I said usually a driveline issue will make its presence known pretty abruptly. If there isnt a shifter issue. Put it in a gear and see if the drive shaft spins if thats the case you have a diff issue. If not youre going to have to pull the trans
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Old Jul 30, 2016 | 09:11 PM
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I don't think it is the differential. Why am I able to shift gears without engaging the clutch with the car running?
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Old Jul 30, 2016 | 10:03 PM
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take the center console apart.. sounds like something backed out or came off by the shifter..
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Old Jul 31, 2016 | 07:14 AM
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Default Maybe..

Originally Posted by BALBI
I don't think it is the differential. Why am I able to shift gears without engaging the clutch with the car running?
As mentioned, the input shaft is no longer "inputing"??
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Old Jul 31, 2016 | 07:50 AM
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Sounds like a shifter to me. You wouldn't break any parts of the trans without putting force to it. So you would be launching and then the part breaks, so you would move a little and also hear or feel it break. It sounds like it was never in gear. And you aren't getting it into gear now either.
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Old Jul 31, 2016 | 07:56 AM
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OK, I just thought about something.

You said you did the burnout, then staged the car. It had to be in gear and working for you to stage the car. At that point you would have just pushed the clutch in and left it in gear to be ready for the launch. So you were in gear to stage it and you never took it out of gear right? If this is the case, you broke something. During the burnout, when you let off the gas, there is a point where the tires gain grip and usually chirp and makes the car surge forward. You might have cracked the input shaft at that point but not break it completely through, then on the launch it snapped. But since it might have already been near actually broke through, it didn't have the strength to make the car move or break where you could hear it.

Doing some head scratching here for ya.
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Old Jul 31, 2016 | 08:11 AM
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Started the car this morning, shifted all gears and nothing. The drive shaft is not spinning.

Center console coming off to check there as suggested.
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Old Jul 31, 2016 | 08:18 AM
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Originally Posted by Taxman20
OK, I just thought about something.

You said you did the burnout, then staged the car. It had to be in gear and working for you to stage the car. At that point you would have just pushed the clutch in and left it in gear to be ready for the launch. So you were in gear to stage it and you never took it out of gear right? If this is the case, you broke something. During the burnout, when you let off the gas, there is a point where the tires gain grip and usually chirp and makes the car surge forward. You might have cracked the input shaft at that point but not break it completely through, then on the launch it snapped. But since it might have already been near actually broke through, it didn't have the strength to make the car move or break where you could hear it.

Doing some head scratching here for ya.
This makes a lot of sense. I did the burnout in second and it didn't feel quite right. I always do them in first. Now that I think about it there may have been a mechanical sound there.
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Old Aug 25, 2016 | 09:23 AM
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Ever figure it out?
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Old Sep 30, 2016 | 02:11 PM
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Originally Posted by 2000taalex
Ever figure it out?
Yes!

Broke the output shaft. Upgraded to a T56 Magnum. I guess that's what I get for using a drag radial with a manual.
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