anyone have groundcontrol rear coilovers?

[cockerpunk]

seems like to solution to all my problems:

Ground Control - 944/968 (Rear) Coilover Assembly (Pair)

koni yellows, pull the torsion bars, springs ... boom and done

[flash968]

nope - if you pull the torsion bars, and use those, you must add to the assembly a coupler and tender spring, so as to maintain a few pounds of pressure to hold the springs in place. otherwise, when you go to wheel drop, the springs falls loose.

if you use them with torsion bars, because the car is resting on the torsion bars, the coils will raise the rear end of the car if you put enough preload on them to keep them in place during wheel drop.

[cockerpunk]

Originally Posted by flash968

nope - if you pull the torsion bars, and use those, you must add to the assembly a coupler and tender spring, so as to maintain a few pounds of pressure to hold the springs in place. otherwise, when you go to wheel drop, the springs falls loose.

why would this be the case? are the springs not long enough to properly extend at full droop? do you have personal experience with this?

cause it sure looks like they can from the pictures showing them at full extension.

[9FF]

Yes I have them front & rear. Pointless on a street car, useful on a track machine. Curious how you think they will solve all your problems. What problems?

As flash968 said you need spacer and helper spring too, not a big deal. Otherwise your springs can dislodge from the mounts. I fitted longer springs on the rear to overcome this as there was plenty of room for height adjustment. On the front I used the spacer and helper as a longer spring would mean I couldn't go as low as I wanted. You also need the lower rear mount and if you have a trans cooler they will not fit without mods.

Rear:



Front:

[cockerpunk]

great ... damn i do have the trans oil cooler too. i assume the mods you mean are basically a oil cooler delete. 86 non LSD turbo

to avoid the previous argument, go to much stiffer springs. but the torson bars are 1. a PITA 2. not very adjustable. there is a reason race teams go to coil springs instead of torson bars, or leaf springs even if the stock cars have them, they are hard as hell to adjust. aiming for 400 lbs/in in front, 650 lbs/in in back to maintain balance. i am also not looking to lower it much, maybe an inch or so, thats it.

why doesn't ground control sell the longer springs? what longer springs did you use?

[flash968]

you can just go to a longer spring and then be able to run without the helper, assuming you run a spring stiff enough so as not to settle under the car weight. i run a 500 in the blue car, and it does quite well, cornering over 1g. i ran a 600 for a minute, but it was way too stiff for autocross, and even for street, though it did do well on the track, and my car is a 968 cab, which weighs a lot more than a 944.

the easy setup would be to run a softer spring, with a coupler and tender, so as to add spring rate to the torsion bars, without raising the car. it does mean you couldn't go any lower than the eccentrics will let you go though. for an autocross or street car, i would recommend a 90 or 100 in the rear, if your torsions are 25.5mm, and then a 250 up front to match. i've set up a couple of cars like that now, and they do very well.

[9FF]

The reason I say coilovers are pointless on a street car is how often do you need that sort of adjustability on the street. Probably once. You fit your new wheels and set the height and spring rate you like and that's it. There's so much info here and elsewhere where you really dont need to experiment and you can do this with the torsion bar set-up and save a bunch while remaining stock.

Now, on a track car you are corner balancing and experimenting every race, coilovers just make sense.

As to the trans oil coooler, it is a close fit with the GC coilovers even mounted inverted as they are. Some people have modified the routing of the cooler coils to avoid contact with the coilovers so it can be done.

[FrenchToast]

Originally Posted by 9FF

The reason I say coilovers are pointless on a street car is how often do you need that sort of adjustability on the street. Probably once. You fit your new wheels and set the height and spring rate you like and that's it. There's so much info here and elsewhere where you really dont need to experiment and you can do this with the torsion bar set-up and save a bunch while remaining stock.

Now, on a track car you are corner balancing and experimenting every race, coilovers just make sense.

As to the trans oil coooler, it is a close fit with the GC coilovers even mounted inverted as they are. Some people have modified the routing of the cooler coils to avoid contact with the coilovers so it can be done.

+1 .

Most (if not all?) rear coilovers are going to hit the tran cooler. I think you can modify the bracket and move it over an inch or so and it clears.

Take care!