Warped rotors - Page 3

1Titan · 04-22-2004, 02:24 AM

Quote:

Originally Posted by Silver SErfer

I am starting to notice it on my CC as well now (almost 3000mi). I am not very surprised after all I have read here, and I will have no problem with it as long as the dealer replaces the rotors. Turning out warped rotors is a temporary fix at best. Turning is supposed to be used for mild surface imperfections and scratches.
I think this does have quite a bit to do with improper wheel torque, and you can bet that I will mention this to the service dept.
I will say that the two GM vehicles that I have owned have also had a bad problem with this, and I fixed it on one by getting aftermarket gas slotted rotors, and on the other I got aftermarket cryogenically <sp?> hardened rotors. Both solutions worked well, although I can't see Nissan putting gas slotted rotors on the Titan

Seen a website re: cryogenically hardened rotors at www.coldfire.com however they only make it for Vettes and I think some GM makes. If I get problems w/my rotors which I have not yet @ 2800miles. The moment my warranty i sover I'm switching to some performance rotors.

3Titans · 04-23-2004, 12:55 PM

Quote:

Originally Posted by 1Titan

Seen a website re: cryogenically hardened rotors at www.coldfire.com however they only make it for Vettes and I think some GM makes. If I get problems w/my rotors which I have not yet @ 2800miles. The moment my warranty i sover I'm switching to some performance rotors.

These folks will freeze your rotors for you. http://www.frozenrotors.com/

got_titan · 04-23-2004, 09:54 PM

just had my dealer resurface my rotors at 6000 miles due to warpage they are all better now. hope they stay that way

they were improperly torqued but im not sure if that was the whole problem. i think nissan got a bad batch of rotors.

karlconnell · 04-24-2004, 10:29 PM

Hey guys, it's been a while since I've posted but I'm now at 6,500 miles and the rotors are warped again (previously machined at 4k). The day they were machined I re-torqued to Nissan's spec's and did it again a few weeks ago so I think there is much more to the problem than being incorrectly torqued (i.e., pads are dragging, calipers bolted to tight, etc.). I love my truck but this is beginning to suck, big time. The radio problem is not a big deal to me, but consistently warped rotors are a different story.

Karl

bwalkertitan · 04-24-2004, 11:27 PM

Quote:

Originally Posted by karlconnell

Hey guys, it's been a while since I've posted but I'm now at 6,500 miles and the rotors are warped again (previously machined at 4k). The day they were machined I re-torqued to Nissan's spec's and did it again a few weeks ago so I think there is much more to the problem being incorrectly torqued
Karl

Someone posted that Nissan stated that the 98 lbsft of torque is too much - I checked my mine today (build was 03/04) and they were at less than 88 (because thats what the torque wrench was set to and i got a little turn out of them before it started to click). The person that posted about the torques mentioned to torque about 10-12 less than factory specs. If you retorqued them to factory, that might be the problem. Here are the quotes:

Quote:

Now, as far as the warped rotors go, the service writer explained the rotor problem stems from the vendor that supplies the rotors for the Titans. The vendor provided Nissan with the wrong tork pressure for the lugs. The service writer advised to loosen all of the lug nuts and re-tighten by hand. The lugs need only be a bit tighter then snug. That should alleviate the warp problems.

Too tight = warped rotors.

Quote:

With the wheel up, tork each lug to 85 ft-lbs. That should stop the rotors from warping. Or so they tell me.

Actually, I forgot to mention I was also told that the 350z and Maxima's had the same problem and by dropping about 10-12 ft-lbs off of the torking, the warping stopped.

karlconnell · 04-25-2004, 12:17 AM

Quote:

Originally Posted by bwalkertitan

Someone posted that Nissan stated that the 98 lbsft of torque is too much - I checked my mine today (build was 03/04) and they were at less than 88 (because thats what the torque wrench was set to and i got a little turn out of them before it started to click). The person that posted about the torques mentioned to torque about 10-12 less than factory specs. If you retorqued them to factory, that might be the problem. Here are the quotes:

I think that guy received some bad advice. I don't have the specs on the lug size right now but I recall double checking other technical sources online after I took my truck in the first time to see if 98 ft lbs was correct and that is the correct amount of torque that should be used on the lug's that come on the Titan's. I really don't think it has anything to do with the torque settings although if you even have a couple lugs on the same wheel tightened differently that can certainly exacerbate the probelm. The shop forman that I spoke to last month indicated Nissan was working on a TSB or perhaps even a recall so hopefully it is close to coming out. But, I guess I'll find out Monday.

You guys should keep those lugs tightened at 98 ft lbs though...

Karl

1Titan · 04-25-2004, 06:36 PM

Quote:

Originally Posted by karlconnell

Hey guys, it's been a while since I've posted but I'm now at 6,500 miles and the rotors are warped again (previously machined at 4k). The day they were machined I re-torqued to Nissan's spec's and did it again a few weeks ago so I think there is much more to the problem being incorrectly torqued (i.e., pads are dragging, calipers bolted to tight, etc.). I love my truck but this is beginning to suck, big time. The radio problem is not a big deal to me, but consistently warped rotors are a different story.

Karl

Howzit Karl. Man that really sucks bigtime! Please keep us informed. -Take Care!!

1Titan · 04-25-2004, 06:39 PM

Quote:

Originally Posted by karlconnell

I think that guy received some bad advice. I don't have the specs on the lug size right now but I recall double checking other technical sources online after I took my truck in the first time to see if 98 ft lbs was correct and that is the correct amount of torque that should be used on the lug's that come on the Titan's. I really don't think it has anything to do with the torque settings although if you even have a couple lugs on the same wheel tightened differently that can certainly exacerbate the probelm. The shop forman that I spoke to last month indicated Nissan was working on a TSB or perhaps even a recall so hopefully it is close to coming out. But, I guess I'll find out Monday.

You guys should keep those lugs tightened at 98 ft lbs though...

Karl

I think so too. I was just going to do a search for this guy's post when I started to read this. I replied to it but he never replied back. I asked everyone if they heard of this as well but no replies. Yup if the maual says 98ft.lbs keep it at that unless otherwise advised by Nissan .

1Titan · 04-25-2004, 06:44 PM

Quote:

Originally Posted by bwalkertitan

Someone posted that Nissan stated that the 98 lbsft of torque is too much - I checked my mine today (build was 03/04) and they were at less than 88 (because thats what the torque wrench was set to and i got a little turn out of them before it started to click). The person that posted about the torques mentioned to torque about 10-12 less than factory specs. If you retorqued them to factory, that might be the problem. Here are the quotes:

bwalker do you remember wher you found this post? Would be nice if everyone could see it. I think it needs to be commented on. I seen it the other day while I was accessing the forum at work and I was going to print it out when I got home but I could not find it and I still can't. I was going over to a stealership to bring it up.

1Titan · 04-25-2004, 06:55 PM

Quote:

Originally Posted by karlconnell

I think that guy received some bad advice. I don't have the specs on the lug size right now but I recall double checking other technical sources online after I took my truck in the first time to see if 98 ft lbs was correct and that is the correct amount of torque that should be used on the lug's that come on the Titan's. I really don't think it has anything to do with the torque settings although if you even have a couple lugs on the same wheel tightened differently that can certainly exacerbate the probelm. The shop forman that I spoke to last month indicated Nissan was working on a TSB or perhaps even a recall so hopefully it is close to coming out. But, I guess I'll find out Monday.

You guys should keep those lugs tightened at 98 ft lbs though...

Karl

I did a search on brakes and here is the post from SPLATT re: the rotors and torqueing the lugs. The title of the post is: Rotors and Radios.
Any more comments???

TH

Rotors and radios
Radio problems. I just returned from my dealer as I too have the annoying radio reception problem. The service writer was honest and explained that he and the Nissan engineers know the radios are a problem. The service writer even allowed me to view the super secret Nissan TSB computer links. As of today’s date 200p EST there is no fix, however, Nissan claims the fix is on the way, maybe as soon as two weeks. Most likely, the fix will come in the form of a new radio for all of us.

Now, as far as the warped rotors go, the service writer explained the rotor problem stems from the vendor that supplies the rotors for the Titans. The vendor provided Nissan with the wrong tork pressure for the lugs. The service writer advised to loosen all of the lug nuts and re-tighten by hand. The lugs need only be a bit tighter then snug. That should alleviate the warp problems.

Too tight = warped rotors.

OH YEAH! I re-torked my lugs and lemme’ tell ya’ I nearly busted a nut on more then half of them. I think they were jack hammered on at the factory. Lets see if this helps.

Chins up, the bugs are on the run!
BELOW IS A REPLY FROM SPLATT RE: LUG TORQUE

With the wheel up, tork each lug to 85 ft-lbs. That should stop the rotors from warping. Or so they tell me.
Actually, I forgot to mention I was also told that the 350z and Maxima's had the same problem and by dropping about 10-12 ft-lbs off of the torking, the warping stopped.

bwalkertitan · 04-25-2004, 07:53 PM

Quote:

Originally Posted by 1Titan

I think so too. I was just going to do a search for this guy's post when I started to read this. I replied to it but he never replied back. I asked everyone if they heard of this as well but no replies. Yup if the maual says 98ft.lbs keep it at that unless otherwise advised by Nissan .

Well, I thought about it and decided to re-torque back to factory specs - just to be safe.

SM68 · 04-26-2004, 03:12 PM

As a general rule take everything you read on a forum with a huge pinch of salt. This is a perfect example of extremely bad internet advice. Please torque to factory specs. These trucks are under warranty so if there's a problem, Nissan will deal with it. In the meantime, torque them properly.

Cheers,
...Colin

bestatchess · 04-27-2004, 09:37 AM

Quote:

Originally Posted by SM68

As a general rule take everything you read on a forum with a huge pinch of salt. This is a perfect example of extremely bad internet advice. Please torque to factory specs. These trucks are under warranty so if there's a problem, Nissan will deal with it. In the meantime, torque them properly.

Cheers,
...Colin

Yes, with the truck under warranty and the lugs torqued to factory specs, any new rotors will be on Nissan.

Optimist · 04-27-2004, 09:49 AM

I agree, but some here had them machined & thinner rotors will reduce the life of the rotor & pads due to higher heat. If your rotors are warped request a new set & keep your torque to spec. until Nissan makes it formal.

BigJoe_Titan · 04-27-2004, 11:22 AM

I also have the warped rotors. Took truck in yesterday and they said that nissan wants new pads and turn rotors. So they told me they will call me when the pads come in. Just one thing, I purchased the wheel locks a while back and when I put them on, I noticed the lugs seemed loose, so i went ahead and tighten them all to spec, then my rotors were warped shortly after. Probably just a coincidence. Anyway, hopefully the will have a permanent fix soon. Mine has just 2700 miles on it (approx).