DR30 guys, s13 coilovers help.

nzjdm · **Posted:** Wed Apr 11, 2012 1:15 am

i used r32 gtr brakes for the front i just drilled the rotors to 4 stud.. im actually going to say im dropping this setup though, i think making coilovers to suit the car create better steering angle and front end geometry ill post pics on my thread as i go

DeRuX · **Posted:** Wed Apr 11, 2012 3:09 pm

nzjdm wrote:

i used r32 gtr brakes for the front i just drilled the rotors to 4 stud.. im actually going to say im dropping this setup though, i think making coilovers to suit the car create better steering angle and front end geometry ill post pics on my thread as i go

So are you removing the S13 stuff and going back to to the strut set up??

2000gtx · **Posted:** Wed Apr 11, 2012 3:55 pm

on the c10 or c110 using this setup will push wheel offset out further rq longer lower control arms to get some negative camber even with camber plates not enough i tried years ago........on c10 c110 i would coil over stock struts or dr30 set up ..which is what i have...i guess will depend also what type of rim you r using...

DeRuX · **Posted:** Wed Apr 11, 2012 5:52 pm

So are you running dr30 struts on the c10??? Did you change your lower arms???

nzjdm · **Posted:** Thu Apr 12, 2012 2:43 am

DeRuX wrote:

nzjdm wrote:

i used r32 gtr brakes for the front i just drilled the rotors to 4 stud.. im actually going to say im dropping this setup though, i think making coilovers to suit the car create better steering angle and front end geometry ill post pics on my thread as i go

So are you removing the S13 stuff and going back to to the strut set up??

yeah i am i will post some pictures in my out dated build thread haha

2000gtx · **Posted:** Thu Apr 12, 2012 8:34 am

derux, you can use dr30 struts with shorter inserts ie z31 or 280zx or even mr2 if you want to go low....the dr30 strut angle is same as c10 and 510...

rb30det-r30 · **Posted:** Thu Sep 27, 2012 6:04 am

nzjdm wrote:

DeRuX wrote:

nzjdm wrote:

i used r32 gtr brakes for the front i just drilled the rotors to 4 stud.. im actually going to say im dropping this setup though, i think making coilovers to suit the car create better steering angle and front end geometry ill post pics on my thread as i go

So are you removing the S13 stuff and going back to to the strut set up??

yeah i am i will post some pictures in my out dated build thread haha

Whats the reasons for this choice man? like what is out geometry wise exactly? Its just that I see a few people that it works for then a few people say the same as you.

Cheers

31GUN · **Posted:** Thu Sep 27, 2012 8:21 pm

I am actually in the process of going back to strut from S13 on my R31 also.
The S13 setup screws up the geometry and you end up with a lot of bump steer.
I'm going to go a U-weld onto the standard hub then a 30mm roll center adjuster.

rb30det-r30 · **Posted:** Thu Sep 27, 2012 8:33 pm

31GUN wrote:

I am actually in the process of going back to strut from S13 on my R31 also.
The S13 setup screws up the geometry and you end up with a lot of bump steer.
I'm going to go a U-weld onto the standard hub then a 30mm roll center adjuster.

But bump steer is related to the angle in which the rack end/tie rod is at and not anything else is it? which can be fixed fairly easily

nzjdm · **Posted:** Fri Sep 28, 2012 4:26 am

rb30det-r30 wrote:

31GUN wrote:

I am actually in the process of going back to strut from S13 on my R31 also.
The S13 setup screws up the geometry and you end up with a lot of bump steer.
I'm going to go a U-weld onto the standard hub then a 30mm roll center adjuster.

But bump steer is related to the angle in which the rack end/tie rod is at and not anything else is it? which can be fixed fairly easily

its not just bump steer.. its "toe in on turns, Ackerman angle etc i have pre warned people of this lol

s13 = fail when fitted to the front of a dr

easy fix though Z31 Koni adjustable shocks in shortened dr30 struts around 10f/6r kg springs for an rb r31 mine has 8f/6r kg but is lighter and has 30mm front swaybar.

31GUN · **Posted:** Fri Sep 28, 2012 12:57 pm

At the moment mine has 8kg/480lb front springs, 6kg/360lb rears.
I had a 27mm adjustable front bar but the car understeered too much (an HR31 trait)
So I'm back to the standard 25mm front bar. (much better)
With the R31 struts I am going around 7kg/400lb fronts.

R31s are a bit different to DR30s, mainly the big heavy 6 cylinder sitting over the front wheels.
They are 2-300kg heavier so naturally understeer more but have more rear grip as well.
So they need a softer front/stiffer rear setup.
7kgkg/6kg should be a nice road/occasional track setup.

nzjdm · **Posted:** Fri Sep 28, 2012 1:32 pm

Dial in some big camber to help with understeer .? You have adjustable lower arms from memory? It will increase track which is also good, but in my head that seems way to soft I mean other heavy front cars need firming I honestly stick by what I said but just add camber ideally if you can try get between 4-5 deg neg camber 8+ deg of caster and -4mm total toe. (For those tight tracks I see you on) having said all that its just my 2c and everyone drives differently :-)

31GUN · **Posted:** Fri Sep 28, 2012 6:02 pm

The car is is on the road 99% of the time so I don't want it too stiff or I'll have to start wearing a sports bra.
Running 3 degrees neg, standard caster, Zero toe.
In the past I have run up to 2mm toe out.

I can't dial in more track because of my poser 9" front wheels :mrgreen:

And a stiffer front on this car means more understeer, especially roll stiffness.
Also running excessive low atm :wink:

as you do.
The Gibson race cars used to run 5.5 degrees neg :shock:

At Wakefield Park the car was magic.
Turn in was really good with trail braking on the smaller bar.
Main difference was at Wakefield I could use the power. Lag wasn't a problem.

I'm really tossing up about the springs.
6kg rear is really good.
fronts available are 4,5,6,8,10,12,14kg, and the one I want is a 7 dammit.
Might have to go with an 8 again.

familycar · **Posted:** Mon Feb 04, 2013 7:04 am

sorry to bump a kinda old thread, but i'm working a r32 brake swap myself...so is it general consensus that s13 coilovers are a bad idea... if you plan to actually drive your car anymore than to a hard parker photo shoot? what is the way to go then? just looking for other possible options in addition to what's posted above. if any exist lol :oops:

DR30 guys, s13 coilovers help.

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