54 replies to this topic

[A9X]

Dan i'm concerned with your 328 mm discs.

I don't think you will get them inside a 15 inch rim.

Additionally, i presumed the commodore hubs were selected in order for you to use 2 piece rotors

Edited by A9X, 07 September 2011 - 03:45 PM.

[ls2lxhatch]

The Del-a-lum bushes Toranamatt69 has are not rubber. In your specs you specified rubber instead of SuperPro so you probably do not want Del-a-lum bushes bushes.

More Pictures Here.



I have a new set of adjustable Konis for sale.

[A9X]

big bore koni's Andy ??

[A9X]

Where are those bushed arms ^^ meant to fit??

[ls2lxhatch]

Mine are Konis are standard. I wasn't aware that the Pajero were also used.

Front 80-2156SP1
Rear 80-2299

The Del-a-lum bushes Toranamatt69 has are for the upper control arm.

[dattoman]

Dave runs 328mm discs , AP calipers , HQ stubs and 16" wheels
So have a look at his Dan

Its all about wheel clearance and offsets mate

[dattoman]

For now mate yes I'm still there

Tiny is in town....I am not confirmed on details but we might be going for wogwheels (pizza) somewhere Friday
I think Dave , Mark and Darren are going too
Might check with Tiny and see if its cool with him and if your free... come shoot shit with us
Dave and Darren both run the same front brakes you want too

[A9X]

Dan you can run 16 x 8 , if you quote the A9X as your base . Targa rules in C3 allow a 2 inch raise in diameter and width.

[ls2lxhatch]

Can you post a link to the thread with his brake details, I couldn't find it using the search function.

Dave (335LX)

Edited by ls2lxhatch, 08 September 2011 - 03:23 PM.

[ozyozyozy]

datto hooked me up a number of years ago with brakes, he`s the go to guy. ap`s 4 spot 328mm rotors, the ONLY way to go.
as per a9x`s screwing around id recomend using a custom 900 pound front spring, made a big difference to my car.
i think the 1100 might be a bit to strong for targa or hillclimb work, some of the road surfaces are no were near the quality of a purpose built circuit.
i`d recommend using a custom 27mm front sway bar.
im using of the shelf koni`s, and the valving is not good enough, if you havent bought shocks yet go with bilsteins, you can still get them iv checked.
I have just pulled my shocks out to get sent off to revalve them, until i decide a permenant solution. wheels world in ozzy park are the local agent for KW, he can get the front and rear coil over setup that UWE our german branch had made, i`ve been disussing this as an option for my car.

[ls2lxhatch]

The hardest part with coil overs in the standard Torana front suspension is finding suitable springs for a track car. Last time I spoke to The German the initial springs he had for the front were 140 kg / 308 lb. I let him know that the street cars run around 650 lb. and the track cars run 860 - 1000 lb. springs. It is going to bedifficult if not impossible to make a 900 lb. spring that fits inside the shock tower of the factory k-frame like the springs he has now.


The only advantage I can see in fitting coil over shocks in the factory suspension (QA1 Pro-Coil Style) is that it is easier to adjust the ride height. This is worthwhile for a street car, I don't know if it has any value on a track car. To get the full benefit from coil over suspension on a track car you need to move the lower shock mount closer to the ball joint and alter the k-frame so a normal coil over shock can be used. This will allow you to quickly change shocks and springs and the reduced spring ratio will mean you can use lighter springs and the shocks will have less work to do.

[ozyozyozy]

thanks ls2lxhatch didnt no about the spring rates the kw coilovers were, i think that just squashed one of my ideas, i agree with the 800 to 1000 pds spring, 308 is no were near enough.
my other idea is mcdonalds bros arms (rang them today, they DO have a uc upper arm, its just listed as a HG arm as they are the same) DMS shocks remounted on front to have as you said shock position near lower ball joint and possibly cut the upper mount of k frame, replate the side of frame and add a double shear mount for top of shock.
want to discuss this with a local guru before i go spending money, so be a while away.

the up side to using a better shock is a larger main body which resists heat fade and there is more shims on either side of the piston to better adjust valving(response of the shock), if you can adapt a race style coilover, there opens a huge range of spring rates.

any other idea`s for front end please speak up, i really want to no whats going on out there.

[ls2lxhatch]

I sent a Factory UC arm late last year to Mc Donald Bros and they found it matched their tubular HG arms. I have the McDonald Bros UC tubular upper arms and tubular lower arms.


I spent a considerable amount of time considering different suspension options including the Mc Donald Bros tubular k-frame, making my own or modifying the Torana k-frame something like this below (Cobra I think). In the end I went with the stock k-fame and tubular arms.





I think at the end of the day running the factory setup is the best value for money option. You would probably get more performance improvement for you dollar spending the money somewhere else on the car. The tubular suspension may also limit the races you can attend.

I you are going to spend the sort of money required to design and build a new front suspension then you would have to consider something like the RRS coil over strut.



I should also add that I am just a backyard tinkerer, I have no experience with track cars or qualifications in suspension design.

Edited by ls2lxhatch, 09 September 2011 - 09:44 PM.