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Thank you for your posts. As the Corvette torque tube and driveshafts are shipped to us used, and have to either be shortened (if 928 engine is used) or lengthened (if LS1 engine is used) we do disassemble them before we make any mods to them. If the TT is to be shortened, we do that in-house. If the TT is to be lengthened, we ship them out to RPM transmissions who does that for us. They lengthen the driveshaft too.
I have no explanation for a bearing with a dent in the side shield - that's just wrong. Mechanic slip-up.
I can explain the small aluminum shavings you found inside the TTube, this comes from drilling and taping the mounts to set the 928 shifter on the TTube. This is supposed to be done BEFORE the driveshaft is installed, and it appears in your case it was not. If its any consolation, that mechanic is no longer working here. But ultimately, it's on me - I was his supervisor and apparently did not check his work as carefully as I should have.
Please let me know how I can help.
Hiding behind old employees and blaming other vendors is a poor choice. You sold the kit. period. The reason I recommend an outrigger on the drivers side is so the installer knows where to drill the pilot holes in the transmission case. the large hole on the bracket is easy, its already there. The hard part is knowing where to align the bolts for the bracket alignment. There is a lot of margin for error on the drivers side bracket, and I provided the feedback privately to you a long time ago, and you wouldn't just sell me one bracket, you sold me a whole 2nd set, and the recommendation fell on deaf ears. the outrigger for the drivers site ensures that the pilot holes are drilled in the correct locations. Here I am trying to give you good honest feedback on your product to help you get better, and you ignore it telling me it was installer error and gouging me on shipping. That is why I changed my feedback method to using this thread because you won't listen to honest feedback and you insult your customers, so the feedback goes public.
The irony is that you have a couple other parts that I would like to have but I refuse to support your lack of real customer service by purchasing more parts.
There are 4 documented driveshaft problems with your kit. 3 of them have metal shavings in them, and 2 of them failed in very low miles after leaving your shop. If you want to be an upstanding vendor, send a set of the proper rated bearings for the drive shafts and instructions to purchasers of your kits free of charge with instructions on how to clean the inside of the driveshaft housing.
Sterling, I am hiding behind nothing or no-one. The error in assembly is on me, as I have said.
I have offered a $100 credit on account to compensate you for your inconvenience. You wanted more. To which I ask you to send your torque tube here and we will rebuild it at our expense.
How is that NOT standing behind our product?
I have no record of your other claims or any driveshaft "failures". Seriously, I have not heard of any driveshaft failures. Nobody has raised a claim with me for a driveshaft failure. If that were to happen, I would ask the very same thing to them - that they send the torque tube to me so that I can inspect it and repair it for them. As the Chevrolet driveshaft has a large aluminum center section and no pillow blocks like we are used to seeing in a 928 TTube, I would be keenly interested in any driveshaft failure. So - if you are making a claim that you have broken your driveshaft, then I must insist that you send the driveshaft in the TTube to us. In this way, we can examine the mode of failure and engineer a solution such that it might not happen again.
Sterling, I am hiding behind nothing or no-one. The error in assembly is on me, as I have said.
I have offered a $100 credit on account to compensate you for your inconvenience. You wanted more. To which I ask you to send your torque tube here and we will rebuild it at our expense.
How is that NOT standing behind our product?
I have no record of your other claims or any driveshaft "failures". Seriously, I have not heard of any driveshaft failures. Nobody has raised a claim with me for a driveshaft failure. If that were to happen, I would ask the very same thing to them - that they send the torque tube to me so that I can inspect it and repair it for them. As the Chevrolet driveshaft has a large aluminum center section and no pillow blocks like we are used to seeing in a 928 TTube, I would be keenly interested in any driveshaft failure. So - if you are making a claim that you have broken your driveshaft, then I must insist that you send the driveshaft in the TTube to us. In this way, we can examine the mode of failure and engineer a solution such that it might not happen again.
2 people posted here about bearing failures under 2000 miles after you installed your 6 speed conversion. one posted pictures on this thread where it looked like the bearing was installed with a punch. I found a dent on my front bearing partially hidden behind a snap ring that I couldn't reach until I removed the drivshaft. The 3rd person posted pic of the inside of his driveshaft housing with metal grit. In looking at the grit, its not from drilling holes, more along the way of cutting the end of the housing off to install yours that bolts up to the porsche bell housing. they were never cleaned.
2 people posted here about bearing failures under 2000 miles after you installed your 6 speed conversion. one posted pictures on this thread where it looked like the bearing was installed with a punch. I found a dent on my front bearing partially hidden behind a snap ring that I couldn't reach until I removed the driveshaft. The 3rd person posted pic of the inside of his driveshaft housing with metal grit. In looking at the grit, its not from drilling holes, more along the way of cutting the end of the housing off to install yours that bolts up to the Porsche bell housing. they were never cleaned.
Ah. Now I can see the difference between your "claims" and legitimate claims that have been reported. We are not Rennlist. Posting something on Rennlist does not make a claim for warranty repair or service with 928 Motorsports. I am most often not at this computer as I am in the shop and assembling parts for our fine customers. There is no one on my staff that reads Rennlist everyday to see what you guys might be talking about. If anyone has a problem with one of our parts I always have asked that you please contact us directly and right away.
For these reasons, my phone number, email address, and website URL are included on every post I make. If anybody has an issue with one of our driveshafts, they need only contact me to begin the warranty process. Pretty standard stuff.
Ah. Now I can see the difference between your "claims" and legitimate claims that have been reported. We are not Rennlist. Posting something on Rennlist does not make a claim for warranty repair or service with 928 Motorsports. I am most often not at this computer as I am in the shop and assembling parts for our fine customers. There is no one on my staff that reads Rennlist everyday to see what you guys might be talking about. If anyone has a problem with one of our parts I always have asked that you please contact us directly and right away.
For these reasons, my phone number, email address, and website URL are included on every post I make. If anybody has an issue with one of our driveshafts, they need only contact me to begin the warranty process. Pretty standard stuff.
Carl, I did contact you directly when I had problems with the brackets. The problem is this: You never look at this from the customers view point, or you would not respond the way you do.
I didn't spend over 6K on a kit and waste years installing, modifying redoing stuff that should have been done right in the 1st place. I also purchased other parts from you, as well as your books, so don't act like I have it in for you.
I didn't do this to you. You did it to yourself.
The last time I talked to you about the brackets on the phone your exact words were "this kit wasn't designed for a home handyman to install" and told me I made mistakes when your kit leaves a lot of margin for errors in some areas. I provided a few suggestions to make it foolproof and you cut me off and ended the call. So when you don't return calls, and your email are very abrupt, then what do you expect people to do?
I also have to add that when I was making recommendations on making the kit better, easier to install for people down the road. I was genuinely trying to help Even after you forced me to buy a complete bracket set instead of just the one I needed. and then gouged me for shipping. Now I have all the data on your brackets as well as my improved brackets I'll give it away for free
You do hide behind crappy warranty policies.
I'm sure if we ask the moderators how often you are logged in accessing Rennlist it might not add up to what you just posted.
started this thread to chronicle my build, and up until now it was all technical.
When you treat your customers badly don't be surprised when they return the favor.
Now I'm just posting the facts of my build.
I've posted other threads through out the years where I had other frustrations as well. this thread is no different except your customers chimed in that they had similar problems.
If you make quality parts and take care of your customers this part of the thread would have never happened.
Last edited by Bigfoot928; 05-05-2020 at 01:58 AM.
Wow, 3 of us.
Same here. I drove my car home to Canada after Carl was finished with it in Wisconsin. No issues at all.
3 weeks later and about the same as above 1500 to 2000K and the noises started.
I had the tranny stripped 2 times, chasnged the new Pilot Bearings that Carl had installed, changed the arm, and most everything.
No solution. Finally I took it to a Corvette specialist in the area and he believed the TT or Tranny were at fault. The Tranny proved to be OK
and so the TT had to be rebuilt. Two of the three bearings were shot.
The parts highlighted were replaced.
Interesting. I didn't even know about yours. Did yours have #5 installed when your shop took it apart?
928sg......I just got caught up on your nightmare and its deja vu all over again. I feel your pain with the countless hours you have for a bolt on kit. You might want to give RPM a call on the TT and maybe even send it to them.....I had to send mine back to them.
Too funny.....I just saw your post in my thread after the Carl incident......
Your quote (below)......we have more than just the 928 motorsports 6 speed in common.
"This thread gets the most gone sideways thread award for 2017. And for once I'm not driving
__________________
When your signature is too long for the IB signature add a pic.
Too funny.....I just saw your post in my thread after the Carl incident......
Your quote (below)......we have more than just the 928 motorsports 6 speed in common.
"This thread gets the most gone sideways thread award for 2017. And for once I'm not driving
__________________
When your signature is too long for the IB signature add a pic.
Please help me understand what I am looking at in the picture on your post #107 above.
Our driveshafts that are installed in our torque tubes look like this:
Post 107 and 115 are the inside of your modified sealed and assembled torque tube with the bottom driveshaft installed. The shavings and grit inside the torque tube are not from drill holes.
05-04-2020, 04:37 PM
