Well, this is what seems to be the case. For whatever reason, the one of my dual disks got worn on the inside where it slides over the input shaft, which caused that disk to spin like crazy and not engage....that meant my other clutch disk had to handle double the power, which it could not....so this one blew up.

Now, McLeod insisted that their clutch could never ruin input shaft splines because the input shaft splines are a stronger material than the inside of the clutch disk.....however, my pictures prove otherwise. You can clearly see that where the two disks sat on my input shaft it wore down the splines.

So here is the first clutch disk which got worn on the inside where it mounts on the splines.......






And the 1st disk wearing out caused the second one to break (as you see here) because there was too much load on the second one....







And even though the clutch disks could never ruin an input shaft, this happened:






Now, my car with the dual disk clutch has not been raced at the track and has not seen slicks with this setup. The clutch had 2000 miles of daily driving on it. The only abuse it saw was 2 nitrous passes on the dyno with a lot of nitrous, the most power I made was 622rwhp/707rwtq. The car never saw more than a 150 shot on the street (600rwhp/650rwtq), which it saw maybe twice since I got the new clutch. McLeod said there is no way my car made enough power to break the clutch due to raw power....

The clutch was installed properly, shimmed correctly, etc...

I'm sending it into McLeod and we'll see what they'll do for me, but it already sounds like they don't want to take liability on this based on what they told me on the phone. I'm shipping it tomorrow; I'll keep everyone posted.

 

Damn, that sucks .
Hope everything works out well for you.

 

Drive splines are wallowed one disc completely one well on its way. It would seem it was not properly installed - there is little/ no wear to the pilot. I suspect you have no / damaged pilot. The clutch cannot runwithout a centerpilot. I would be very concerned about the pocket bearing of the trans as well.

 

They are, at most, are only going to cover their part, the clutch.

They will not cover you input shaft, etc.

No company, regardless of the product, will pay for other parts of the car that get damaged as a result of their product failing. Even K&N air filters have the same warranty, i.e. covers their part only, nothing else, even if it took out your engine.

This really sucks that this happened. That clutch should not have done that.

 

Hold on, Don't send it back yet!

I would have someone do a "Rockwell hardness test" on it first.

This will give you proof to the hardness of the material. They might carborize those pieces and failed to properly carborize yours.

 

I already sent it back.....and i wouldn't know the first place to do a Rockwell hardness test on it in town.

In fact, they are going to perform that test themselves when it gets back to their shop.

 

Same thing happend to me when I ran one of the first Spec 3 versions. Clutch disk exploded, and took my whole T-56 with it. Blew the internals to ****....

 

This is what I wish we could get when we purchase a clutch:

- This hardness testing
- Completely balanced assembly

Where can one independently have this Rockwell Hardness testing done?

I know that a lot of clutches are advertised as being balanced but based on data I have seen you can get some that are not balanced.

 

As I posted on the other site, what does your pilot bearing look like?

 

He is using a pilot bushing... its fine. From what I have seen this is a common problem with the dual disc clutches because the amount of surface area on the disc that is actually in contact with the input shaft vs the amount of torque he makes and the rate at which the engine produces the torque on nitrous... A single disc has almost 3 times the surface area on the input shaft and this would not have occured had it used the single... the fun part is finding a single disc with good drivability that can handle the power he is making

 

The spline fit must be poor. Maybe a straight-side tooth would hold up better that a involute.

 

Do you think a Ram 910 VDS would hold it? I think its very drivable with 4.10 gears.

 

clutches cause so much trouble... my car has been down for 3 weeks because of one

 

I would think any local university with mechanical engineering degrees would have a material science lab that would have this type of eqiupent.

They do this kind of thing for fun.

 

> They are, at most, are only going to cover their part, the clutch.
> They will not cover you input shaft, etc.
> No company, regardless of the product, will pay for other parts of the car that get damaged as a result of their product failing. Even K&N air filters have the same warranty, i.e. covers their part only, nothing else, even if it took out your engine.

IMO they are liable for the damage to the transmission as well as a result of their faulty product.

They wont fix your trans voluntarily, but thats why god made lawyers.

 

That's why it's your opinion. I agree with your opinion but that's not real life.

The facts are what I listed above. Feel free to look at ANY aftermarket part that has a warranty. They ALL absolve responsibilty of their part from any damage caused by failure of their part. The companies will only cover their defective part, period.

It sucks, but that's the way the market is. It's good for many reasons and bad for many reasons.

 

> The facts are what I listed above. Feel free to look at ANY aftermarket part that has a warranty. They ALL absolve responsibilty of their part from any damage caused by failure of their part. The companies will only cover their defective part, period.

They cant absolve themselves from their liability, no matter what it says on their warranty.

Feel free to bend over and take it that's your perogative.

 

They can and they do. As a customer agreeing to buy their product under their stipulations you abide by their rules.

We all take this chance when we modify our car in any way that is not a stock configuration/component.

Can you substantiate your claim with court documentation or the like that agrees with your standpoint?

I'm all for seeing factual data.

 

Here's what the K&N Air Filter Warranty covers:

EXTENT OF WARRANTY:
Any defective Filtercharger® element properly returned to K&N will be replaced by K&N. K&N will not be responsible for any other expenses incurred by the customer under the terms of this warranty, nor shall it be responsible for any damages either consequential, special, contingent, or otherwise; or expenses or injury arising directly or indirectly from the use of the Filtercharger® element. Any Filtercharger® element returned to K&N must be sent at customers' expense along with proof of purchase. K&N reserves the right to determine whether the terms of the warranty, set out above, have been properly complied with. In the event that the terms are not complied with, K&N shall be under no obligation to honor this warranty.

 

Verbs, here's what McLeod will cover under their parts:

No-Charge Repairs

1. Pressure plate
   1. Lever broken off (no other damage).
   2. Eyebolts or Yokebolts broken (with no external foreign interference).
   3. Cover cracking (on V-8 engines only).
2. Disc
   1. Plates cracking or broken with no signs of heavy wear in spline.
   2. Facing blown off (unless it is a street/strip disc used primarily in race car or soaked with oil).
   3. Spring out of plate with no visible foreign-object interference or obvious misalignment.
3. Flywheel
   1. Clutch pattern drilled off
   2. Crank pattern drilled off
   3. Crank hole too large or too small
   4. Heatshields missing rivets
   5. Ring gear loose when wheel is brand new
   6. Mis-boxed
4. Throw out Bearing
   1. Noisy bearing at installation