motoring|underground  
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read Blog

The Lineup Bringing you the sexiest rides team has to offer...

Go Back   motoring|underground > motoring|underground Presents... > The Lineup
Reply
 
Thread Tools
  #1  
Old 02-16-2007, 03:43 AM
Siddhartha's Avatar
Siddhartha Siddhartha is offline
Y Rated - 186 mph
 
Join Date: Feb 2006
Location: Reno
Posts: 2,161
Default Uh-oh

Remember when I said my idea of tuning was to wait for your car to tell you what it needs? Well guess what? My car is talking to me.

The front shock mounts are bulging because I put so much stress on them while cornering. Solution: hammer them flat and install a front strut brace.

The front wheel arch is scoring my inside tire in fully loaded corners. Solution: Koni adjustable coil over shocks.

Factory set camber is no longer optimal. Solution: adjustable camber plates.

The rear control arms are fatiguing under load. Solution: high performance rear control arms.

I've warped the rotors of my new StopTech brakes. Solution: new rotors and learn how to brake better so it doesn't happen again.

I'm gonna have a wreck soon 'cause I'm driving so frickin' fast. Solution: bolt in roll cage and a good safety seat with 5 point harness.

This is no longer a grocery getter. It's a full on dedicated track day car.

Anybody want to try me?

__________________
Click the image to open in full size.
Reply With Quote
  #2  
Old 02-16-2007, 05:16 AM
iDiaz's Avatar
iDiaz iDiaz is offline
μ
 
Join Date: Nov 2005
Location: San Marcos, CA
Posts: 15,878
Send a message via AIM to iDiaz
Default

Warped rotors are a misconception... what your rotors are probably telling you is that you need to heed the cool-down lap and use the drag of a turned off engine to slow your car to a stop when you pull into your parking spot after some hot laps, instead of squishing those toasty-hot pads into the rotors after the car has already stops.

According to an article I read by Stoptech a long time ago, the feel of "warped rotors" is actually caused by a deposit in your rotors called cementite. You should be able to see it on rotor--a slightly darker pad-shaped deposit somewhere on the rotor surface. Basically, the heat of the rotor and pad combined with the pressure of the pad bringing the car to a complete stop causes the carbon in the pad and the iron in the rotor to form steel, which resists wear, causes a variation in friction coefficient as the pad wipes across it (vibration), and forces the rotor to wear unevenly (iron wears faster than cementite).

Anytime I've experienced that warped feel after a track day, I generally take care of it by braking for longer distances with lighter pressure for a few weeks. The reduced pressure seems to let the pad wear away the cementite without wearing the iron as much, so it'll smooth out after awhile, eliminating that warped rotor feel.

According to Stoptech, you can also install some aggressive race pads (Ferodo DS3000, anyone?) for a couple of days, removing the cementite more quickly for those with less patience.
__________________
Click the image to open in full size.
Reply With Quote
  #3  
Old 02-16-2007, 12:54 PM
Siddhartha's Avatar
Siddhartha Siddhartha is offline
Y Rated - 186 mph
 
Join Date: Feb 2006
Location: Reno
Posts: 2,161
Default

Sounds good to me. I've been following your braking advice unheedingly and can already feel the difference. I'll try to take it easier today at Laguna and pay attention to cooldown.

Thanks!!
__________________
Click the image to open in full size.
Reply With Quote
  #4  
Old 02-16-2007, 04:46 PM
Slow Paul Slow Paul is offline
μ
 
Join Date: Feb 2006
Location: Upland, CA
Posts: 13,742
Default

Quote:
Originally Posted by Siddhartha View Post

This is no longer a grocery getter. It's a full on dedicated track day car.

Anybody want to try me?

No, but teach me everything you know about driving and I'll try!!! The new mods sound good.....well thought-out....but that's what I would expect from ya!
__________________
Live Slow, Die Old
Reply With Quote
  #5  
Old 02-16-2007, 09:55 PM
minimark minimark is offline
Y Rated - 186 mph
 
Join Date: Dec 2006
Location: Winston-Salem,NC
Posts: 1,758
Default

Quote:
Originally Posted by Siddhartha View Post
Remember when I said my idea of tuning was to wait for your car to tell you what it needs? Well guess what? My car is talking to me.

The front shock mounts are bulging because I put so much stress on them while cornering. Solution: hammer them flat and install a front strut brace.

The front wheel arch is scoring my inside tire in fully loaded corners. Solution: Koni adjustable coil over shocks.

Factory set camber is no longer optimal. Solution: adjustable camber plates.

The rear control arms are fatiguing under load. Solution: high performance rear control arms.

I've warped the rotors of my new StopTech brakes. Solution: new rotors and learn how to brake better so it doesn't happen again.

I'm gonna have a wreck soon 'cause I'm driving so frickin' fast. Solution: bolt in roll cage and a good safety seat with 5 point harness.

This is no longer a grocery getter. It's a full on dedicated track day car.

Anybody want to try me?

It's not talking, it's shouting!
Reply With Quote
  #6  
Old 02-17-2007, 06:33 AM
Flamez's Avatar
Flamez Flamez is offline
Leadership
 
Join Date: Nov 2006
Location: At work
Posts: 11,811
Default

Quote:
Originally Posted by iDiaz View Post
Warped rotors are a misconception... what your rotors are probably telling you is that you need to heed the cool-down lap and use the drag of a turned off engine to slow your car to a stop when you pull into your parking spot after some hot laps, instead of squishing those toasty-hot pads into the rotors after the car has already stops.
Man Ivan. You are like a braking savant. Good info.
__________________
Click the image to open in full size.
Reply With Quote
  #7  
Old 02-17-2007, 04:13 PM
iDiaz's Avatar
iDiaz iDiaz is offline
μ
 
Join Date: Nov 2005
Location: San Marcos, CA
Posts: 15,878
Send a message via AIM to iDiaz
Default

Hahahah, lord knows I've pwn3d enough rotors in my day.
__________________
Click the image to open in full size.
Reply With Quote
  #8  
Old 02-17-2007, 06:25 PM
brownMINI brownMINI is offline
Y Rated - 186 mph
 
Join Date: Apr 2006
Location: VT
Posts: 1,885
Default

I've found that if you daily drive with a cross duty track / street pad (Hawk HPS in my case) you will get pad deposits from daily driving.

Yes, coming to a complete stop with hot brakes after a session on the track will definitely cause pad desposits. But, it appears that with some pads, normal daily driving will do it too.

I've found that getting them brakes nice and hot then bedding them in again will help, but only for a while. They'll act fine on the track, but after a month or so of daily driving I'll start getting a wobbling steering wheel under medium braking.
__________________
98 hp at the wheels
Reply With Quote
  #9  
Old 02-18-2007, 12:56 AM
queenb's Avatar
queenb queenb is offline
Y Rated - 186 mph
 
Join Date: Jul 2006
Location: Knoxville, Tennessee
Posts: 342
Default

Uh-Oh.

It sounds like I won't be able to run off and hide from you any more if Casper and I ever get to return to a left coast track, Jerry.
If I do..... I'll make sure my pointing finger is in good working order.
__________________
Click the image to open in full size.
Reply With Quote
  #10  
Old 02-18-2007, 01:15 AM
Rally's Avatar
Rally Rally is offline
μ
 
Join Date: Nov 2005
Location: Newport Beach, Calif.
Posts: 32,222
Send a message via AIM to Rally
Default

Sounds awesome sid....and perfect for a driver like you
__________________
Click the image to open in full size.
Reply With Quote
  #11  
Old 02-18-2007, 02:35 AM
xalfa's Avatar
xalfa xalfa is offline
Y Rated - 186 mph
 
Join Date: Nov 2006
Posts: 1,512
Default

Sid, do you do your own work? If not, where do you take your car? BBM? Edge? Curious as to your opinions on local shops.
Reply With Quote
  #12  
Old 02-18-2007, 11:08 PM
Siddhartha's Avatar
Siddhartha Siddhartha is offline
Y Rated - 186 mph
 
Join Date: Feb 2006
Location: Reno
Posts: 2,161
Default

BBM
__________________
Click the image to open in full size.
Reply With Quote
  #13  
Old 02-19-2007, 03:40 AM
xalfa's Avatar
xalfa xalfa is offline
Y Rated - 186 mph
 
Join Date: Nov 2006
Posts: 1,512
Default

Jacques is the man.
Reply With Quote
  #14  
Old 02-23-2007, 07:31 PM
Siddhartha's Avatar
Siddhartha Siddhartha is offline
Y Rated - 186 mph
 
Join Date: Feb 2006
Location: Reno
Posts: 2,161
Default Sad Arthur Bulks Up

Well, I guess that after 3 years of flogging this poor little car around the track, it's finally time to go racin'.

To that end, Bay Bridge Motors is currently installing:
new front control arm bushings
new rear control arms
a front strut brace
new Stoptech rotors (after I warped the first set)
Hawk orange pads
Koni adjustable shocks
adjustable camber plates
a roll cage
Recaro driver's seat
5 point harness
New gate braces and tow hooks for my trailer

I already have Randy Webb's adjustable sway bar winched down tight, which is really helping with the understeer.
Instead of lifting the inside front wheel in tight corners, it now does this:



Click the image to open in full size.



And I stuck a K&N filter in the JCW airbox.
With all these goodies aboard, I'll be back to learning how to drive again. Should be fun.
__________________
Click the image to open in full size.

Last edited by Siddhartha; 02-23-2007 at 07:49 PM..
Reply With Quote
  #15  
Old 02-23-2007, 07:42 PM
melissa melissa is offline
Y Rated - 186 mph
 
Join Date: Nov 2005
Location: socaleuro.com
Posts: 9,999
Default

I wanna ride!
Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


CURRENT MOON

All times are GMT. The time now is 12:50 PM.
Powered by vBulletin® Version 3.8.1
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
2005 motoring|underground, all rights reserved.