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 2Likes
06-29-2008, 08:39 AM
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CC Member
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Join Date: Jun 2005
Cobra Make, Engine:
Posts: 3,077
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Not Ranked
Kudo's to you with keeping those nasty ugly weights off the outside of the rim. I have a spf and they used weights on the inside, none on the outside and zero vib.
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06-29-2008, 12:18 PM
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CC Member
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Join Date: Nov 2007
Cobra Make, Engine: Midstates/Shell Valley Street Cobra
Posts: 892
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Not Ranked
Flaming River Part #FR 1883 Vibration Resistor
Has anyone had any experience with this on a Superformance ? If so, what size ?
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06-29-2008, 01:04 PM
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CC Member
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Join Date: Aug 2002
Location: Dacula, (Atlanta),
GA
Cobra Make, Engine: Unique 427 SC, Southern Automotive 427W Stroker
Posts: 1,649
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Not Ranked
I put a steering damper on my car while I was having the vibration issue. The benefits of the damper are very subtle. It will have no noticible affect on the kind of vibration you're experiencing.
__________________
After a good hard ride.....oil pressure is over 50, temp is below 190, she idles and no new dents. LIFE IS GOOD!
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06-29-2008, 02:00 PM
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CC Member
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Join Date: Sep 2003
Location: San Jose,
Ca
Cobra Make, Engine: SPF #1436 514
Posts: 1,488
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Not Ranked
Yes, Take a look at my earlier post.
Scott
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06-29-2008, 04:59 PM
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CC Member
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Join Date: Apr 2005
Location: Near Chattanooga,
TN
Cobra Make, Engine: SPF, 418 Stroker
Posts: 220
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Not Ranked
Quote:
Originally Posted by Bartruff1
Some don't and mine won't or it will be gone....I will be through screwing with the tires soon and then I will go thru the entire front end ...bushings....tie rods ...whatever...and lastly install rag joints with vibration dampers...my fricking jeep is smoother than the SP...
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Bart -
Before you replace the front end, be sure you have all four wheels properly balanced and checked for roundness. I've had the same problem you have twice now, and the last time it was a rear wheel that was bonkers. At first I focused on the front and was more than a little frustrated when nothing I did there helped. It finally dawned on me that with a light car, a vibration anywhere would easily be transmitted throughout the car. A careful Road Force balance of the rear wheels fixed it. Then there was the first time I had this problem.....(you don't want to know).
Jerry |
06-29-2008, 05:46 PM
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Senior Club Cobra Member
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Join Date: Oct 2006
Location: Santa Cruz,
CA
Cobra Make, Engine: SPF 2613 Titanium w/Black, Roush 402SR
Posts: 4,097
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Not Ranked
Bart - As a comparison, you might want to take a ride in a couple of other SPF cars to see if there's a noticeable difference in the amount of vibration that you're experiencing in your car.
__________________
Doug
No stop signs, speed limit - Nobody's gonna slow me down - Like a wheel, gonna spin it
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06-29-2008, 05:56 PM
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CC Member
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Join Date: Feb 2006
Location: Sydney,
NSW
Cobra Make, Engine:
Posts: 554
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Not Ranked
Zero vibration on either my 15" Yoko's or 17" Vintage with Michelin Pilot Cup Sports. My SPF is a 2005 build. Few other unidentified rattles and squeaks however. Learned to live with it!
Can you borrow another set of front wheels from a non-vibrating car and see what happens?
Richard
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06-29-2008, 07:54 PM
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CC Member
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Join Date: May 2003
Location: Richmond,
RI
Cobra Make, Engine: Superformance #1676
Posts: 133
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Not Ranked
Tire balancing beads?
Can you recommend where to get them and aprox how much to put in each tire??
Thanks!
Sean
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06-29-2008, 08:31 PM
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CC Member
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Join Date: Nov 2007
Cobra Make, Engine: Midstates/Shell Valley Street Cobra
Posts: 892
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Not Ranked
There are no other SP's in my neck of the woods
Quote:
Originally Posted by Got the Bug
Bart - As a comparison, you might want to take a ride in a couple of other SPF cars to see if there's a noticeable difference in the amount of vibration that you're experiencing in your car.
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In any case, I believe those that say they have ZERO vibration and that is what I intend to get to... |
06-29-2008, 10:16 PM
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CC Member
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Join Date: Sep 2003
Location: San Jose,
Ca
Cobra Make, Engine: SPF #1436 514
Posts: 1,488
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Not Ranked
Bart,
Also keep in mind what type of road you are driving on. Since I had my tires balanced on the car, it is perfect on an asphalt highway, but I will still get a bit of vibration on a concrete freeway with groves cut in it.
Scott
Last edited by scootter; 06-29-2008 at 10:27 PM..
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06-29-2008, 10:22 PM
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Senior Club Cobra Member
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Join Date: Oct 2006
Location: Santa Cruz,
CA
Cobra Make, Engine: SPF 2613 Titanium w/Black, Roush 402SR
Posts: 4,097
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Not Ranked
Good point Scott. You get a LOT of road feedback with these cars. My car is steady at most speeds, but I took a run up the coast hwy today and hit a couple of spots where my steering weel was bouncing all over the place.
__________________
Doug
No stop signs, speed limit - Nobody's gonna slow me down - Like a wheel, gonna spin it
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06-29-2008, 10:54 PM
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CC Member
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Join Date: Feb 2006
Location: Wickenburg,
AZ
Cobra Make, Engine: SPF 2370, Dark Silver, Roush 402R
Posts: 118
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Not Ranked
Mine is very sensitive to the road surface. The vibration varies from zero to barely noticeable - I can see a little, but not feel it, if I take hands off the steering wheel at 65-70 on certain surfaces.
__________________
I love it when a plan falls apart.
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07-01-2008, 12:27 PM
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CC Member
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Join Date: Nov 2007
Cobra Make, Engine: Midstates/Shell Valley Street Cobra
Posts: 892
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Not Ranked
Das Boat
Well, in a triumph of hope over experience and on the 4th try, the Manager finally balanced my tires and re torqued the pins to 100lbs. You just have to find the guy that can operate the submarine. It might be that he test drove the car before and after, something we would not let the kids do.
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07-01-2008, 01:24 PM
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CC Member
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Join Date: Apr 2007
Location: PL,
MN
Cobra Make, Engine: SUPERFORMANCE ROUSH427 TRI POWER
Posts: 54
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Not Ranked
Wheel Vibe
Quote:
Originally Posted by Bartruff1
Well, in a triumph of hope over experience and on the 4th try, the Manager finally balanced my tires and re torqued the pins to 100lbs. You just have to find the guy that can operate the submarine. It might be that he test drove the car before and after, something we would not let the kids do.
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IS IT FIXED????????????????????????????????????? |
07-01-2008, 01:31 PM
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CC Member
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Join Date: Nov 2007
Cobra Make, Engine: Midstates/Shell Valley Street Cobra
Posts: 892
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Not Ranked
Acceptable...
Quote:
Originally Posted by BLUE427
IS IT FIXED?????????????????????????????????????
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Yes, I think so, will try a variety of speeds and pavements tomorrow. I can live with some feedback from the road (of course) but that constant vibration at 65 + was not something I could put up with...... I was thinking vette.... |
07-01-2008, 01:35 PM
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CC Member
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Join Date: Apr 2007
Location: PL,
MN
Cobra Make, Engine: SUPERFORMANCE ROUSH427 TRI POWER
Posts: 54
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Not Ranked
Bart,
Would Like To Hear The Results When You Find Out For Sure, I Have The Same Issues And Would Like To Fix It Also. It Is Unbearabe. Thanks For The Reply In Advance.
Blue427
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07-01-2008, 02:38 PM
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Banned
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Join Date: Oct 2003
Location: Yorba Linda,
CA
Cobra Make, Engine: SPF w/392CI stroker
Posts: 3,293
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Neutral
Quote:
Originally Posted by Bartruff1
...the Manager... re torqued the pins to 100lbs.
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Would love to know how exactly he did that without mushrooming any of them in the process?!? 70-80lbs is max. Could be an interesting exercise for you the next time those wheels need to come off. 
-Dean #747 |
07-01-2008, 02:53 PM
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CC Member
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Join Date: Jun 2005
Cobra Make, Engine:
Posts: 3,077
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Not Ranked
The scof site call for 100ft-lbs. If any deformation were present he would never have been able to get the wheel on. Even 150ft-lbs would not be enough to deform.
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07-01-2008, 06:12 PM
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Senior Club Cobra Member
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Join Date: Aug 1999
Location: Carlsbad,
CA
Cobra Make, Engine: Previous owner of SPF#1938, with a Keith Craft 496ci Genesis 427 side oiler, 667 FWHP, 633 FWTQ, 560 RWHP, 550 RWTQ.
Posts: 1,303
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__________________
Jim Woodard
Don't interfere with somethin' that ain't botherin' you none.
Last edited by jwoodard; 07-01-2008 at 06:15 PM..
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07-02-2008, 11:13 AM
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CC Member
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Join Date: Nov 2007
Cobra Make, Engine: Midstates/Shell Valley Street Cobra
Posts: 892
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Not Ranked
Whooo...Hooooo
Quote:
Originally Posted by BLUE427
Bart,
Would Like To Hear The Results When You Find Out For Sure, I Have The Same Issues And Would Like To Fix It Also. It Is Unbearabe. Thanks For The Reply In Advance.
Blue427
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Mine is fixed but I feel your pain. Intermitent road feedback is ok, but a constant vibration is as you say " Unbearable ". I started with the least expensive solution ...tires .....then it was wheels and if that didn't work, I was going to go to the front end mechnical parts eg ball joints, tie rods , bushings etc. There is a lot of advice in here, so the problem may be fairly common. If you are satisfied that all four tires are balanced and round etc....have someone check the driving pins....if all else failed I was going to go to rag joints and vibration resistors joints and I still might have a steering damper installed...good luck... |
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