Random Little Question Thread
#9901
This is correct. It is called squat (or anti-squat when it goes the other way)
here is one description
http://www.how-to-build-hotrods.com/tuning-4-link.html
In the stock g35, I believe the movement is minimal if there is any at all. But if you lower the car, you move the roll center, and it can become significant enough to be a problem.
The thing is, if you see when you are parked in drive, it is even worse when you are accelerating with normal driving. To fix this properly, you need roll center adjusters. Or really really stiff springs.
here is one description
http://www.how-to-build-hotrods.com/tuning-4-link.html
In the stock g35, I believe the movement is minimal if there is any at all. But if you lower the car, you move the roll center, and it can become significant enough to be a problem.
The thing is, if you see when you are parked in drive, it is even worse when you are accelerating with normal driving. To fix this properly, you need roll center adjusters. Or really really stiff springs.
So if I had my rear coilovers set so that the wheel gap was .25" (just throwing a random number out there) more than the front, it would not make a difference when the car is put into drive?
#9902
In case anyone doesn't believe me:
here are some g35's squatting on a dyno. Look at those poor cars. Imagine accelerating on real asphalt, the car squats and you use up all your bump travel. Any small imperfection which is present in every road is going to bottom out the suspension.
Here is what a modified drag car looks like with anti squat:
here is a different camaro without the gobs of antisquat:
Here is an example of antisquat on a dyno:
here are some g35's squatting on a dyno. Look at those poor cars. Imagine accelerating on real asphalt, the car squats and you use up all your bump travel. Any small imperfection which is present in every road is going to bottom out the suspension.
Here is what a modified drag car looks like with anti squat:
here is a different camaro without the gobs of antisquat:
Here is an example of antisquat on a dyno:
#9903
So it depends on what you are looking for, how the car looks in park, how the car looks in drive, or how the car looks while accelerating.
The real way to fix it is to get roll center adjusters and move the roll center so that the antisquat is at 100% and the car neither squats nor raises.
If you are talking about performance, then I'd say you probably shouldn't be dropping your car so low that the amount of squat in drive worries you.
#9904
Hahaha. I love people trying to compare squat of 1000hp drag cars to a 240hp G35. The 1/2 inch the rear may drop on a hard launch really doesnt matter. You drive a heavy underpowered daily driven family car. Just set the car level, get it aligned and dont laugh your car like a dbag at every red light.
#9907
#9908
#9911
Recently hit 110k miles on my 05 G. Waiting til March to put in the new plugs i bought as well as some new fluids in the trans and differential. My gas gauge has been fluctuating lately. I ran some lucas fuel cleaner to see if that would help but no dice. Any ideas? Im also thinking about either going back to the stock airbox or getting the stillen airbox.
#9912
#9915