First Problem With my 370Z

ImportConvert · 09-10-2012, 08:51 AM

Brakes have an issue. The steering-wheel shakes pretty bad when I press 'em.

I am going to drive it a bit and see if something just got on the rotor/pad or what. They are re-finishing the roads here and maybe some gunk needs to be burned off?

If it's not better in 100 miles or so, my 10,000 mile old '12 370Z looks like it will get a Brake Job, probably courtesy of Nissan.

Just my guess for now.

75mph accelerating: smooth. Coasting: smooth. Applies brakes: shakes.

red6spd · 09-10-2012, 08:53 AM

Sounds like the rotors are warp. Any track days?

Base or sport?

HKYStormFront · 09-10-2012, 08:57 AM

rotors are warped most likely. nissan won't do anything about it. just have em turned (resurfaced)

Red__Zed · 09-10-2012, 10:11 AM

Highly unlikely you've warped those fat chunks of metal this fast.

Far more likely that you are feeling pad transfer (possibly from improper bedding)

It's pretty common with the stock pads. You can try going though the bedding procedure to try and clear them, or scuff up the rotor surface a bit.

ImportConvert · 09-10-2012, 10:14 AM

Quote:

Originally Posted by Red__Zed

Highly unlikely you've warped those fat chunks of metal this fast.

Far more likely that you are feeling pad transfer (possibly from improper bedding)

It's pretty common with the stock pads. You can try going though the bedding procedure to try and clear them, or scuff up the rotor surface a bit.

Sport, 10K miles, never got the oil temp above 225, no track days.

It is my opinion that it is possible that somehow pad material transferred improperly, hence I will drive it for 100 miles and see if anything changes, maybe go through a bedding procedure late at night.

It's a myth that rotors warp.

What is the best proceedure for OEM Sport pads?

It feels like a bedding issue to me because the harder I apply the brakes, the "calmer" it feels. If something were not "true", that would only make it worse.

HKYStormFront · 09-10-2012, 10:16 AM

Quote:

Originally Posted by ImportConvert

It's a myth that rotors warp.

lol... you must have never seen one on a brake lathe

red6spd · 09-10-2012, 10:17 AM

Quote:

Originally Posted by HKYStormFront

lol... you must have never seen one on a brake lathe

Yea that was a joke right?

HKYStormFront · 09-10-2012, 10:18 AM

Quote:

Originally Posted by red6spd

Yea that was a joke right?

has to be... i mean the guy can access a forum and type a post, he can't be full-retard

Red__Zed · 09-10-2012, 10:22 AM

Quote:

Originally Posted by ImportConvert

Sport, 10K miles, never got the oil temp above 225, no track days.

It is my opinion that it is possible that somehow pad material transferred improperly, hence I will drive it for 100 miles and see if anything changes, maybe go through a bedding procedure late at night.

It's a myth that rotors warp.

What is the best proceedure for OEM Sport pads?

It feels like a bedding issue to me because the harder I apply the brakes, the "calmer" it feels. If something were not "true", that would only make it worse.

Re-bed them. A couple of high speed stops should do ya

"warped rotors" is more a misnomer than a myth, since the uneven deposits represent a "warped" braking surface.

ImportConvert · 09-10-2012, 10:24 AM

Quote:

Originally Posted by Red__Zed

Re-bed them. A couple of high speed stops should do ya

"warped rotors" is more a misnomer than a myth, since the uneven deposits represent a "warped" braking surface.

Exactly. A rotor doesn't warp. It can wear un-evenly, or it can get uneven deposits on it, but warp? Show me...

HKYStormFront · 09-10-2012, 10:51 AM

while that's probably true in most cases^ i've seen plenty that were almost un-turnable. usually on big, heavy SUV's like escalades. but that's not to say it couldn't happen on smaller cars too

ImportConvert · 09-10-2012, 10:58 AM

Quote:

Originally Posted by HKYStormFront

while that's probably true in most cases^ i've seen plenty that were almost un-turnable. usually on big, heavy SUV's like escalades. but that's not to say it couldn't happen on smaller cars too

This is because the deposits heated un-equally over time, to much higher temperatures than the surrounding rotor, leading to the conversion of that part/spot on the rotor surface to cementite, a harder material, which will require physical removal or the problem will simply re-present soon as it will not wear with the rest of the rotor face.

shadoquad · 09-10-2012, 11:10 AM

Ok, misnomer or not, that is what's commonly referred to as "warped rotors". Looks like folks have been helpful with their suggestions. Possibly your pads aren't properly bedded in, or perhaps you have "deposits on your rotor, heated unequally over time to much higher temperatures, leading to the conversion of that part to cementite."

Either way, I really hope this gets sorted quickly and painlessly for you.

Zdar · 09-10-2012, 11:11 AM

I have the exact same issue but it has been diagnosed as a warped rotor.
We tried sanding off all the deposits but found out that the front driver's side rotor is warped.

b1adesofcha0s · 09-10-2012, 11:12 AM

I had this same problem with my Z last year. While I didn't try the re-bedding procedure, I did get the rotors resurfaced and it was running perfectly after that.

09-10-2012, 08:51 AM	#1 (permalink)
ImportConvert A True Z Fanatic Join Date: Jun 2010 Location: SWMO Posts: 4,454 Drives: 2019 CX5 GT Reserve Rep Power: 7626	First Problem With my 370Z Brakes have an issue. The steering-wheel shakes pretty bad when I press 'em. I am going to drive it a bit and see if something just got on the rotor/pad or what. They are re-finishing the roads here and maybe some gunk needs to be burned off? If it's not better in 100 miles or so, my 10,000 mile old '12 370Z looks like it will get a Brake Job, probably courtesy of Nissan. Just my guess for now. 75mph accelerating: smooth. Coasting: smooth. Applies brakes: shakes.

09-10-2012, 08:53 AM	#2 (permalink)
red6spd A True Z Fanatic Join Date: Apr 2010 Location: Long Island NY Posts: 3,277 Drives: 2010 Z Coupe M6 SPT Rep Power: 21	Sounds like the rotors are warp. Any track days? Base or sport? __________________ 2010 Base+Sport 6spd: Stillen G3, FI Non-Resonated CBE, FI Non-Resonated Test Pipes, UpRev Tuned, Custom 24R Oil Cooler, JDM Rear Fog-OEM Harness. ???Whp ???WTQ (Will find out come spring time)

09-10-2012, 08:57 AM	#3 (permalink)
HKYStormFront A True Z Fanatic Join Date: Apr 2009 Location: Greer, SC Posts: 14,954 Drives: 06 Frontier SE 6spd Rep Power: 52	rotors are warped most likely. nissan won't do anything about it. just have em turned (resurfaced) __________________ Patrick // 06 Frontier 6spd Nismosis // Mods: Uprev Tuned @ Z1 Motorsports: 257whp & 292 ft lbs 09 Pontiac G8 GXP // M6 // Sunroof // Tint... For now

09-10-2012, 10:51 AM	#11 (permalink)
HKYStormFront A True Z Fanatic Join Date: Apr 2009 Location: Greer, SC Posts: 14,954 Drives: 06 Frontier SE 6spd Rep Power: 52	while that's probably true in most cases^ i've seen plenty that were almost un-turnable. usually on big, heavy SUV's like escalades. but that's not to say it couldn't happen on smaller cars too __________________ Patrick // 06 Frontier 6spd Nismosis // Mods: Uprev Tuned @ Z1 Motorsports: 257whp & 292 ft lbs 09 Pontiac G8 GXP // M6 // Sunroof // Tint... For now

09-10-2012, 11:10 AM	#13 (permalink)
shadoquad A True Z Fanatic Join Date: Apr 2010 Location: . Posts: 42,608 Drives: . Rep Power: 3885	Ok, misnomer or not, that is what's commonly referred to as "warped rotors". Looks like folks have been helpful with their suggestions. Possibly your pads aren't properly bedded in, or perhaps you have "deposits on your rotor, heated unequally over time to much higher temperatures, leading to the conversion of that part to cementite." Either way, I really hope this gets sorted quickly and painlessly for you. blackcherry20 likes this.

09-10-2012, 10:11 AM	#4 (permalink)
Red__Zed A True Z Fanatic Join Date: Jul 2010 Location: window seat Posts: 28,940 Drives: Mostly on two wheels Rep Power: 119	Highly unlikely you've warped those fat chunks of metal this fast. Far more likely that you are feeling pad transfer (possibly from improper bedding) It's pretty common with the stock pads. You can try going though the bedding procedure to try and clear them, or scuff up the rotor surface a bit.

09-10-2012, 11:11 AM	#14 (permalink)
Zdar Base Member Join Date: Sep 2012 Location: San Jose - Bay Area Posts: 82 Drives: 11 370Z MB M6 Rep Power: 12	I have the exact same issue but it has been diagnosed as a warped rotor. We tried sanding off all the deposits but found out that the front driver's side rotor is warped. __________________ Begin with the end in mind.

09-10-2012, 11:12 AM	#15 (permalink)
b1adesofcha0s A True Z Fanatic Join Date: Jan 2011 Location: MD Posts: 40,963 Drives: HypeTrain Choo Choo! Rep Power: 141	I had this same problem with my Z last year. While I didn't try the re-bedding procedure, I did get the rotors resurfaced and it was running perfectly after that. __________________ Project: b1adeZmobile (2009 370Z) \| Uprev Tune by AAM Competition \| Berk Exhaust Project: b1adeZmobile 2.0 (2014 C7 Z51) \| Corsa Xtreme Exhaust

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