[Shotimes] Shaking at 70

[David Rosicke]

Check your Strut-Rod bushings, especially if it shakes when braking at higher speeds.
 
Dave R.From: "George Fourchy" 
To: "shotimes@autox.team.net" 
Date: Thu, 08 Jul 2004 09:57:11 -0700
Subject: Re: [Shotimes] Shaking at 70

On Thu, 8 Jul 2004 12:13:36 -0400 (Eastern Daylight Time), Carl Prochilo wrote:

>Bought new wheel/tire package upgrade. This nailed it! It is a real
>pleasure to drive the car now, so I know what you are going through.

This is the alternative solution to centering your current wheels with sheetrock
screws. Costs a couple of bucks more, but you don't have to drive screws into your
wheels.

>Now, what this proved to me is one of two things happened on the original
>slicers. Either one or more wheels has a problem, or one or more tires
>has broken internal belt. This latter thing can happen with radials. I
>was able to quiet things down with the slicers by moving a suspect tire
>(that was virtually brand new mind you) to the rear of the car. So if you
>rotate your tires front to back and can feel a difference, that might be
>the area to investigate.

If a tire has separated a belt, the shaking from that will be noticeable from a
standstill. At the least, one tire will have a lump in it, like it had a mud clod
on one spot of the tread. When the separation gets worse, the belt will start to
twist, and the car will feel like it is doing the hula if the tire is in the back,
and the wheel will twist in your hands if it is in the front.

Not likely in this case, since things are smooth at slow speeds.

George

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Message: 2
From: "Paul Nimz" 

To: "jared gardner" , 
Subject: Re: [Shotimes] Shaking at 70
Date: Thu, 8 Jul 2004 12:04:02 -0500

Still I would bet it is the tires. Most shops even with the super-duper
Hunter machines cannot get tires that are way out of wack balanced. Need to
do the George Fourchy thing.

Paul Nimz
'97 TR
'93 EG mtx


----- Original Message ----- 
From: "jared gardner" 
To: 
Sent: Thursday, July 08, 2004 10:33 AM
Subject: [Shotimes] Shaking at 70


> I developed a shaking at 70mph a while back. Since then I have had my
> wheels balanced several times and then last night had an alignment done.
> Unfortunately the shaking is still there. What are the parts of the
> suspension that I should check that could be causing the shaking. Also if
> you could tell me how to inspect them as I am a novice when it comes to
> suspensions. Thanks.
>
> Jared Gardner
> 91 MTX White/Mocha 105K
>
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Message: 3
From: "Kevin & Cheryl Airth" 
To: 
Date: Thu, 8 Jul 2004 12:47:01 -0500
Subject: [Shotimes] Cryo Treating Rotors

I have run a front set of stock 93 rotors that were cryo treated. They did
not warp but I got a sticky caliper after a couple of years and it gouged
the rotor after the pad worn to the metal backing plate,so it had to be
replaced. For the cost I would NOT recommend it. Go with the 96 upgrade and
good pads. Be sure and bed the pads and rotors properly. I have found this
to be the biggest factor in avoiding warping. Although I have warped the 96
upgrade once, I still have not worn out the Carbotech type F pads. Man I
wish they still made these!! I paid additional $50 plus shipping to get the
2 front rotors treated. Add stainless steel lines and rear brake plugs and
the SHO will flat STOP!!

Someone posted a link that said the rotor warping was actually brake pad
material unevenly deposited in the rotor and this is why bedding the new
stuff is so important. With a lot of high performance pads you are placing a
layer of brake pad material on the rotor during the bedding process. If this
layer is deposited uneven or wears uneven then the pulsing brake pedal is
the result. So turn your rotors and again bed the brakes. I don't know that
I believe this entirely from my long personal experience but after using a
bedding procedure even stock SHO's seem much more resistant to warping.
.
.

> Cryo treating is reported to help a lot, but I haven't tried it.
>
> Kerby
>
> At 08:22 PM 7/7/04 -0500, bjshov8 wrote:
> >A slightly related question-
> >
> >What are some recommended manufacturers/stores to go to for rotors? Is
> >there such a thing as a rotor that is resistent to warping? Is there a
> >benefit to the cryo treatment?


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