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Author
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Topic: Coil over spring question.
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RPM289
Journeyman Posts: 63
From: Phenix City, AL
Registered: Feb 2002
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posted 08-09-2002 11:45 AM
   
How can I identify what rate of spring I have? If it makes any difference mine are white. Also how much air should I run in my M/T Sportsmans size 29x16.5x15? I don't think I should be spinning these with a basicly stock 302, stock convertor and a C4.:confused At the track I had about 10psi and was spinning like crazy. Best 60' was 2.20.------------------
Mike 66' Mustang,289,4 speed overdrive.
95' Lightning #2218
65' Mustang,Tubbed, Rear cage ladder bars / coil over's, 5.13:1 N-case 9in.31 spline, 302, C4.
IP: Logged |
Hemikiller
Gearhead Posts: 142
From: Clinton, CT
Registered: Feb 2002
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posted 08-09-2002 12:27 PM
Sportsmans are more of a streetrod or prostreet tire. For traction they are pretty much useless as a drag tire. You need at least a set of street Dot slicks, like the MT ET/Streets or Hoosier Quick time pro. The pressure you are running sounds low. I'll bet you had very little contact patch. Best way to figure out the correct pressure is to get the tire to whatever temp you would run them at, probably just warm. Then measure the pressure, record it, and do a short burnout. Then look at the marks on the pavement compared to the width of your tires. If it is alot narrower than the tires, then the tire is ballooning in the middle and there is too much pressure. If there are two marks on the outside, and nothing on the inside, then the tire is cupping in the center, and the pressure is too low.
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Moneymaker
Administrator Posts: 13249
From: Lyons, IL, USA
Registered: May 99
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posted 08-09-2002 12:38 PM
Try C&E, Alston, or S&W's webstites ffor srping ID's.  ------------------
Alex Denysenko
Co-Administrator and Moderator/ non 65-66 Mustang owner sensitivity co-ordinator NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
Professional Manwhore
The Barry of BarrysGrrl
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Just Strokin
Gearhead Posts: 293
From: Tuscaloosa, Alabama
Registered: Dec 2001
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posted 08-09-2002 12:55 PM
get some bathroom scales and compress the spring an inch on top of the scales. this should give you an approximation of the spring rate.granted this would be hard to do with front springs, but not that difficult with the rear springs.
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RPM289
Journeyman Posts: 63
From: Phenix City, AL
Registered: Feb 2002
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posted 08-12-2002 11:44 AM
Thanks for the help guys!! I may go back out Friday if it don't rain. Mabey I will see a 9.50 pass.------------------
Mike 66' Mustang,289,4 speed overdrive.
95' Lightning #2218
65' Mustang,Tubbed, Rear cage ladder bars / coil over's, 5.13:1 N-case 9in.31 spline, 302, C4.
IP: Logged | |
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