Ranman72 Posted April 23, 2013 Report Share Posted April 23, 2013 has anyone ever run a rear coil over set up and kept the other springs in the stock location? is this a good idea bad idea stupid idea ??? I am looking to stiffen the rear end and get rid of the squat the ride height I have now is good I was also wondering if anyone has had any problems with breaking the stock shock mount when running the rear coil overs Thanks for your input Randy Quote Link to comment
datzenmike Posted April 23, 2013 Report Share Posted April 23, 2013 I see no problem with this. No different that dual valve springs or adding an extra leaf. Some people remove the stock spring and run all the rear weight on a coil over supported by the rear shock mount and seem to do so without problems. I did mention this once and everyone said this was so. Quote Link to comment
q-tip Posted April 23, 2013 Report Share Posted April 23, 2013 I wouldn't see a problem with it but it kind of defeats the purpose of coilovers. If just want it to be stiffer try using just the strut/shock from the coil over how too and see if that will stiffen it up Quote Link to comment
Tristin Posted April 23, 2013 Report Share Posted April 23, 2013 If you're looking for a stiffer rear-end look into the '69 Camaro shocks. Direct bolt-in and there's a few options for adjustable dampening so you can stiffen it up or run soften with a turn of a dial. Quote Link to comment
Tristin Posted April 23, 2013 Report Share Posted April 23, 2013 Yep, and way cheaper than rear coils. Quote Link to comment
sssr20det510 Posted April 23, 2013 Report Share Posted April 23, 2013 or just get coilovers with a stiffer spring rate like 300 or 350 Quote Link to comment
Ranman72 Posted April 24, 2013 Author Report Share Posted April 24, 2013 or just get coilovers with a stiffer spring rate like 300 or 350 i haven't heard of any shock mount failures when running coil overs but that was my concern and the thought behind running both springs the cost is not the problem I am getting these new in a trade deal otherwise I wouldn't have the money for them so if I go strictly coil overs any suggestions on spring rate for minimal sag and not break my teeth the shocks only dampen the ride and shouldn't control the height so I am running tokiko blues and a stiffer shock might slow down the sag but wouldn't it still drop the same amount and by the way the springs are after market but I have no idea the spring rate I believe they are suspension techneics ( I know spelled wrong ) Quote Link to comment
datzenmike Posted April 24, 2013 Report Share Posted April 24, 2013 The stock coils are not over the rear axles but in front between them and the hinge point on the cross member. Effectively the axle has a mechanical advantage when squeezing the spring of about 3.8. This means that if you have say, a 200 pounds per inch front spring rate on your zx struts and want a similar rate at the back, you will need a spring rate of 760. Now if running a coil over on the shock mount you are now placing the axle between it and the hinge point. The mechanical advantage is lost and a lighter spring rate is needed for the same perceived ride stiffness. It would be 200 pounds per inch is directly above the wheel and slightly less if behind. Quote Link to comment
Ranman72 Posted April 24, 2013 Author Report Share Posted April 24, 2013 thanks Mike Quote Link to comment
Ranman72 Posted April 25, 2013 Author Report Share Posted April 25, 2013 well we are going to try 250LB on coil overs in the rear my zx front set up looks to be around 220LB this should be a good combination as long as its not to stiff thanks for all the input when they are installed I will let you all know how well I like it Quote Link to comment
hang_510 Posted April 25, 2013 Report Share Posted April 25, 2013 well we are going to try 250LB that should be just right. im running 300# Quote Link to comment
Ranman72 Posted April 25, 2013 Author Report Share Posted April 25, 2013 that should be just right. im running 300# how do you like the 300# Quote Link to comment
datzenmike Posted April 25, 2013 Report Share Posted April 25, 2013 Spring rate is something that is different for everyone. Some like firm, anther's firm is too soft to someone else and so on. Best is to try driving someone else's car and get the feel for it. My 710 is 150 in the front..... I don't think I would like it any stiffer. Quote Link to comment
Ranman72 Posted May 6, 2013 Author Report Share Posted May 6, 2013 well I got the techno toy tuning rear coil overs installed today I am running 250 Lb springs and the coil set up is built on the 8 way AGX shock Gabriel at techno suggested running at 2 or 3 for the street I started off at 2 and then tried 3 I like the 3 setting but as I drive it more I might go to 4 I am happy with the spring rate it seems pretty good supports with little sag but not to stiff to make your teeth fall out If I decide to make my teeth fall out I will try #8 setting on the shocks I also removed the old springs like normal people do Quote Link to comment
Ranman72 Posted May 18, 2013 Author Report Share Posted May 18, 2013 the before video the after video 250 lb springs and agx 8 way shocks set on 3 I mioght switch to 4 Quote Link to comment
510T Posted May 20, 2013 Report Share Posted May 20, 2013 Looks great no squat! What do you have planned for up front? Quote Link to comment
Ranman72 Posted May 24, 2013 Author Report Share Posted May 24, 2013 Looks great no squat! What do you have planned for up front? zx fronts springs are about 220 slotted cross drilled rotors Techno camber plates and tension rods all this not installed yet I still need to get the rotors Quote Link to comment
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