I'm setting some struts up for my coupe at the moment. I've decided to dedicate it as a circuit racer, and want to go low.

How much suspension travel do you really need? I was thinking two inches of bump and an inch of rebound? I have some really short shocks to go in, and am trying to suss out where to put the spring seats. I've got about 4 inches of adjustment on the threaded part I'm putting on.

How do people get on lowering the back? I've heard people say their car is lowered 4 inches etc etc but can it really be done? I have mine lowered 2 inches and which the H165 under it, there's bugger all room for the housing to travel in bump before it hits the floor. I had to take the bump stops out or it wouldn't have had more than about 5 mm travel!! Maybe my springs have sagged a bit?

Also thinking of harder springs in the front, got 175lb/in now I think, was mainly set up for gravel, but for full circuit I've heard of people running everything from 200 to 400 lbs!!! That's quite a range! What do you racers here run/recommend?

And where's the best place in NZ to get 2 1/2 " springs? I know George Stocks has them, anyone else that may be a better bet?
Cheers guys.

Nismo rated their springs for the front at 225lbs. Most SS2000 cars used to run 240lbs. 50mmm of bump will be fine. Cardwells sell Carrera springs and have an awesome range. Flatten the rear rear leaves to the point where there is only a 20mm or so curve and then use lowering blocks . You may have to C the chassis rails for clearance.

sweet, cheers wayne. I'll give cardwells a ring.

I think my rear springs must have sagged- there is only about 20mm height in the arc now. I was going to get them reverse eyed at the spring shop and up the rate a bit maybe. I think I'll be able to get rid of the lowering blocks or at least reduce the size of them as I'm not running any anti tramp rods yet. I saw the photo of the rear chassis rails c'd for clearance in the photo album, that must have been one low 1200. Was this common amongst the shellsport cars?