I dont think cryro treating the input shaft is going to be a good idea. We looked into ion nitrating the shaft to harden it up, but like cryro treating it, it just makes the outside of it harder. The problem is that the input shaft needs to have some flexability with all the torque forced on it and if it cant flex at all, it will break even worse. If anyone can disprove this please do as we are putting a new shaft in my trans soon. thanks all.
Awesome thread. Think I broke mine, felt like the shift selector broke and took out that whole assembly and it was fine. Guess I'll be tearing the tranny apart.
im having trouble getting the car into gear sometimes under normal driving, could that be a symptom?
No, thats most likely your syncro.
We are actually having a input shaft tested with the cyro treatment to see if this indeed with help things out. We are having the techs do several types of tests to see how we can really strenghten this bad boy up. Stay tuned...
im having trouble getting the car into gear sometimes under normal driving, could that be a symptom?
No, thats most likely your syncro.
We are actually having a input shaft tested with the cyro treatment to see if this indeed with help things out. We are having the techs do several types of tests to see how we can really strenghten this bad boy up. Stay tuned...
well how could it be synchro if I have the clutch pedal all the way down and still doesn't go into gear.....sometimes......meaning the engagment is almost to the floor, and the pedal is adjusted as high as it can be.
I dont think cryro treating the input shaft is going to be a good idea. We looked into ion nitrating the shaft to harden it up, but like cryro treating it, it just makes the outside of it harder. The problem is that the input shaft needs to have some flexability with all the torque forced on it and if it cant flex at all, it will break even worse. If anyone can disprove this please do as we are putting a new shaft in my trans soon. thanks all.
Cryo treating works by causing the molecules in the material to reallign, creating a stronger material, with a more uniform grain and a greater ability to shed heat. It also helps stress relieve the part. I does not however increase the hardness or brittleness of the treated part, it does cause the piece to be more uniformly hard however (ie the variation in material hardness is reduced) but little to no increase in actual hardness.
All this is assume that you have the part properly done by a company using a deep cryogenic treatment, with temps below -258F. A shallow treament using a temp higher than -258 (ie using dry ice) will not produce the results your looking for.
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I dont think cryro treating the input shaft is going to be a good idea. We looked into ion nitrating the shaft to harden it up, but like cryro treating it, it just makes the outside of it harder. The problem is that the input shaft needs to have some flexability with all the torque forced on it and if it cant flex at all, it will break even worse. If anyone can disprove this please do as we are putting a new shaft in my trans soon. thanks all.
Cryo treating works by causing the molecules in the material to reallign, creating a stronger material, with a more uniform grain and a greater ability to shed heat. It also helps stress relieve the part. I does not however increase the hardness or brittleness of the treated part, it does cause the piece to be more uniformly hard however (ie the variation in material hardness is reduced) but little to no increase in actual hardness.
All this is assume that you have the part properly done by a company using a deep cryogenic treatment, with temps below -258F. A shallow treament using a temp higher than -258 (ie using dry ice) will not produce the results your looking for.
Ding, correct answer. Dont forget about the 24 hour cool down, that is what really makes the treatment set into the material.
I dont think cryro treating the input shaft is going to be a good idea. We looked into ion nitrating the shaft to harden it up, but like cryro treating it, it just makes the outside of it harder. The problem is that the input shaft needs to have some flexability with all the torque forced on it and if it cant flex at all, it will break even worse. If anyone can disprove this please do as we are putting a new shaft in my trans soon. thanks all.
As I cannot "disprove" anything, I had my input shaft cryo treated. Have been beating up on it for over 1 year now with S3 and some bolt on-ons. 1.7x second 60' times and putting in a Spec clutch next weekend. Can't seem to find a decent clutch for the street and to run with slicks at the track. Clutch Masters doesn't seem to like the slicks, but wonderful on street tires...
Wow, this poll is turning into what looks like a transmission graveyard...LOL
Anyway, it seems that it's fairly even across the board, indicating that there never really was a particular "bad" batch of input shafts made, but rather that some/many input shafts are prone to the same problem, regardless of what batch they were in.
Good info. for everyone here. I'm also glad that I'm not the only one breaking them...LOL
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