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Author Topic:   Metric Ride Heights
o5racer
Dirt Maniac

Total posts: 115
posted March 02, 2003 02:51 PM
What is average ride heights for a metric on dirt with 255/70/15s? The last two cars I had were a 75 chevelle and a 76 monte. This is my first metric and was wondering where to start.

ryan
Dirt Freak

Total posts: 430
posted March 02, 2003 06:48 PM
Nick, I was told by b.w. inch higer in the rear than front and a 1/2 in higher on the right side than the left. I'd tell you how many inches, but that might help you to much and you are already faster than me. You give me some trade secrets from Rivera and I might give it up.

o5racer
Dirt Maniac

Total posts: 115
posted March 02, 2003 08:51 PM
Strong bumpers, rub bars and lots of spare parts. LOL.

ryan
Dirt Freak

Total posts: 430
posted March 02, 2003 09:54 PM
Thats not a trade secret everybody and their dogs know that.

odb93
Dirt Freak

Total posts: 214
posted March 03, 2003 09:38 AM
I have heard that on a metric cutlass/monte/regal 7 inches is what you want.

Winland Racing
Dirt Roller

Total posts: 22
posted March 03, 2003 02:48 PM
I have a 79 malibu also. I put in my racing springs from my 76 chevelle. 1050lf,1200rf. It looks like my overall ride heigth is too high. I have a 9 inch spring with about a 2 inch spacer in the front. What is the proper lower ball joint angle. I am trying to determine if the chassis is too high. The 7" heigth that was recommended, is that the frame to the ground? I also installed my spindles and rotors from the 76. Any help would be appreciated. I will be working on it this week.
Thanks,
Winland Racing

twleach
Dirt Roller

Total posts: 17
posted March 03, 2003 06:26 PM
Do a search on topics posted by Sleepy Gomez. If I remember correctly, ride height is to be between 6.5 and 7 inches measured where frame rails are welded into the stamped part of the frame.

ryan
Dirt Freak

Total posts: 430
posted March 03, 2003 10:14 PM
I think thats a little low for where we race.

Winland Racing
Dirt Roller

Total posts: 22
posted March 04, 2003 11:16 AM
I looked at my Steve Smith book and it also stated around 7". I am currently at 12". I will pull the spacers out in the front and re-spring the rear to see if I can get closer to 7"
I may need to go to a 10.5" rear spring vs my current 14" spring. Are there any concerns with a shorter rear spring coming loose on a rough track?

o5racer
Dirt Maniac

Total posts: 115
posted March 04, 2003 09:46 PM
What size tires were they running for 6.5-7 inches? we run the big 255/70s, 29 inches tall.

SLEEPY GOMEZ
Dirt Maniac

Total posts: 199
posted March 04, 2003 10:42 PM
Hi Ryan & twleach. On the ride height I used on my I-Stock, the above numbers are right. The way I arrived at this was by trying to get as much bump travel as I could before the roll center went too high. The roll center rises MUCH faster than the car rises. I settled on what I considered the minimum bump travel I could live which as I remember was 3" measured at the center of the tire. Bump travel stops when the lower A frame contacts the chassis rail. These numbers will be somewhat dependant on the springs used. A higher roll center will require weaker springs to get the car to shift weight to the right front for corner entry. So there are other combinitions that work. Hope this helps, SLEEPY

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