[JONJON]

I am getting 90/10's up front but I am stuck between moroso trick springs or Granatelli coil over.I am getting a good deal on the coil over its just I dont really like coil overs.I have seen them make noise and not stay where you set them.Who has run granatelli coil overs before?Thanks for any help.

[Stangzilla]

Originally Posted by JONJON I am getting 90/10's up front but I am stuck between moroso trick springs or Granatelli coil over.I am getting a good deal on the coil over its just I dont really like coil overs.I have seen them make noise and not stay where you set them.Who has run granatelli coil overs before?Thanks for any help.

Well I would never use a coil over on a car that does not have a K-Member and tube control arms. The stock control arm weigh quite a bit more than tube ones. The stock control arms put a lot more pressure on the coil overs and they were really not designed for that extra weight. Notice the top cap and the large threaded tube that goes over the strut is made out of aluminum. The extra pressure put on it will cause it to squeak or make some kind of noise. The noise usually comes from the aluminum cap that fits on the top of the spring. When I put mine together even though I have the K-Member and arms I sprayed a graphite-molybenum dry film lube on the top caps and my coilovers are as quite as can be.. Also if you dont know already if you use coil-overs you will also have to get a set of caster camber plates. I have a set of Strange coil-overs. They are good. I have used D&D before. Never used Granetelli but they should be ok, I guess.. But if you still have stock front control arms I would go with the other springs.. But hey thats just me.. I am sure I will get attacked for this one too!!!!!

[Darrell]

Coil overs hands down. Those "trick" drag springs are worthless.

The k-member and control arms have nothing to do with the decision of coil overs or not. The factory control arms could weigh 800 pounds more than tubular control arms and it wouldn't matter. The control arm weight is under the spring, regardless of the type of spring or type of control arm. The spring doesn't care how much the control arm weighs because the spring sits on it. If you want to get technical the spring sits on the spindle which sits on the balljoint which is in the control arm. Same thing. The weight that effects the spring is the weight above the spring, the car.

And no that is not an attack. That is an explanation of how the front suspension is designed.

[Stangzilla]

Originally Posted by Darrell Coil overs hands down. Those "trick" drag springs are worthless. The k-member and control arms have nothing to do with the decision of coil overs or not. The factory control arms could weigh 800 pounds more than tubular control arms and it wouldn't matter. The control arm weight is under the spring, regardless of the type of spring or type of control arm. The spring doesn't care how much the control arm weighs because the spring sits on it. If you want to get technical the spring sits on the spindle which sits on the balljoint which is in the control arm. Same thing. The weight that effects the spring is the weight above the spring, the car. And no that is not an attack. That is an explanation of how the front suspension is designed.

Is that what un-sprung weight is?

[mxnate116]

yeah same question as above.

would the control arm be sprung or unsprung weight? is everything under the spring unsprung?


and i dont know it its the same but for motocross i was told unsprung weight is the best place to lose weight. is this true for cars?

[Darrell]

Originally Posted by Stangzilla Is that what un-sprung weight is?

It would technically be unsprung weight because it is under the spring and not supported by the spring. Having a heavier control arm would be similar to having a steel wheel versus an aluminum wheel. Neither is going to effect what spring rate is needed because it is not effecting the load on the spring.

[Darrell]

Originally Posted by mxnate116 yeah same question as above. would the control arm be sprung or unsprung weight? is everything under the spring unsprung? and i dont know it its the same but for motocross i was told unsprung weight is the best place to lose weight. is this true for cars?

I think the best place to lose weight is rotating weight because it has a multiplying effect over dead weight. Experts in this area claim 1 pound of rotating weight is equal to 8 pounds of dead weight. Alot of unsprung weight can cause wheel hop and other issues but when it comes to putting a car on a diet taking weight out anywhere is going to be helpful.