Suspension advice
Suspension advice I'm looking for advice and suggestion, my Camaro lifts the front tires about a foot in the air for a few feet then as the front comes down, it unloads the rear suspension and it spins the tire a bit. Without switching to a heavier spring or double adjustable shock what can I do? Would adding more power and letting the front end carry the wheels out farther help? If I tighten up the front shock extension to slow the rise would that help to keep the front closer to the ground without hurting weight transfer?
The springs and shocks are
Strange single adjustable coilover w/ 275lb springs
Front shock is set a 3 clicks from full loose
Strange double adjustable rear shocks w/ 93-97 v6 springs
Rear compression is 3 clicks from full tight and extension is 5 clicks from tight
Rear Lca are in lowest hole possibly on the rear axle
MWC anti-roll bar
-3* pinion angle
Tires are Hoosier drag radials 17lbs of air
Here is a video in slow motion, at the end as the car begins to come down you can see the gap between car and track surface disappear.
The springs and shocks are
Strange single adjustable coilover w/ 275lb springs
Front shock is set a 3 clicks from full loose
Strange double adjustable rear shocks w/ 93-97 v6 springs
Rear compression is 3 clicks from full tight and extension is 5 clicks from tight
Rear Lca are in lowest hole possibly on the rear axle
MWC anti-roll bar
-3* pinion angle
Tires are Hoosier drag radials 17lbs of air
Here is a video in slow motion, at the end as the car begins to come down you can see the gap between car and track surface disappear.
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Joined: Mar 2014
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Looks like your close. IMO I would tighten the front a couple clicks to slow the rise if it is coming up too fast. Hard to tell in slow mo. Then loosen the back a few clicks on extension, to soften the hit. I've have never used double adjustables in the rear, only in the front, so Im not sure what the compression should be. Looks like the tires start to spin just after the hit. And that's what is unloading your suspension. It don't look like its going to take much.
Last edited by TTur1996; Jun 1, 2015 at 04:10 AM.
Double adjustable front will help for sure, but you can tighten the front extension to slow the rise until the tire spins earlier. If the track surface will hold you maybe able to just put the LCA up one hole which will slow the hit a bit and stretch out the transfer. If this works then you should be able to apply more power as early as .5-.7 into the run.
Double adjustable front will help for sure, but you can tighten the front extension to slow the rise until the tire spins earlier. If the track surface will hold you maybe able to just put the LCA up one hole which will slow the hit a bit and stretch out the transfer. If this works then you should be able to apply more power as early as .5-.7 into the run.
If I tighten the rear compression completely wouldn't that cause the car to rotate up even more?
It's a Midwest Chassis short arm with true dual crossmember. Yes it's pretty close to stock height. The v6 springs lowered it slightly
I may be misunderstanding your first part about tire spin. Why would I want the tires to spin earlier? I don't want the tire to spin at all.
I may be misunderstanding your first part about tire spin. Why would I want the tires to spin earlier? I don't want the tire to spin at all.
You have to have some weight transfer to stick the tire at the hit, but too much transfer is not gaining you any forward motion. The more firm front extension will slow the weight transfer and keep the nose from rising quite so fast, but at some point this may cause the tires to loose grip earlier in the run if you slow the transfer too much.
Move the lowers up one hole and tighten up the front shock extension a bit. Leave the rear shocks alone until you see what this does.
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I had the same problem when I had the LCAs in the lowest hole. It would hit the tires hard and then unload them a few feet down the track. Too much anti-squat is a bad thing. I'd put the LCAs in the middle hole.
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Teching In
Joined: Mar 2017
Posts: 12
Likes: 0
From: Las Vegas, NV.
Rob's Z28 Try less air pressure in slicks and tighten lower control arm so it has to lift wheels quicker. Performance Trends has software (free first month) to determine anti squat, rise, and center of gravity by 4 link location. Just looking out. Load your specs and performance Trends has the answer
Try adding some weight to the front with your current setup. Take some of the pinion angle out. Scale the car to see where you are. How much fuel are you carrying? Gallon of fuel weights 6.183 pounds per gallon.
Last edited by Heyfred; Mar 9, 2017 at 09:58 AM.
Same recommendations here. I would tighten the rebound on the front shocks and bring the lca's up a hole, or tighten the rear rebound also if you have adjustable rear shocks
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Glenn ***
Sales Tech
www.bmrsuspension.com
813.986.9302
Find a Quality alignment shop near you!
Last edited by ragtopz28; Mar 16, 2017 at 07:43 PM.