We have been spending some time lately figuring how we want to set the suspension up, and seeing what we want to run for hard points on the chassis etc. We also want to figure out how to set up the rear springs/shocks, since there is not a lot back there. We started to get the chassis points into the computer and figure out roughly how the car will behave when we set up the points the way we want to. The models is being created using program called Motionview (by Altair Engineering) which is for multibody dymanics. This is then sovled using a program called ADAMS.

Here is the model as it is today. The front and rear suspension have all the basics points in. Not much to see aside from the bare basics. You can clearly see all the main suspension parts for the front MacPherson strut suspension and SLA rear IRS. The key here is the info it spits out.. and not having detailed graphics. I will post some animations once they are up and running, as it makes more sense when you see things moving. Now it is time to determine the kinematic behavior of the car (camber/caster/toe curves) and them move onto the dynamic side of things (spring rates, shock rates etc). Also been spending some time with a complete 3D rendering of the car which should be ready to post in a week or two.

This is much easier to do now before everything is finished, and it is not really easy to guess how a car will behave by just looking at where points are. This will provide a starting point for setup, as it is much harder to move points when everything is welded in for good.
http://twintorino.com/images/suspens...lation_001.jpg

Finally got some renderings going for the cars.. figured I would post here as well as it goes along with the build progress of the cars. This was my first crack at 3D rendering.. just needed a good project to learn how to use it. More to come in the near future.

Also have lots more done on the front suspension and the subframe connectors. Pics to follow shortly.

http://www.twintorino.com/images/ful...%20renders.jpg

Couple more updates:

Three main things on the go right now - front suspension/steering/brakes, floor of car/subframe connectors and steering column/pedal setup and seat positioning. Rear suspension is on hold until custom bent tubes and rear coil overs arrive.

First the suspension. Have found most of the front suspension components online in the past month or so (nearly new for discounted prices of course). Nice thing here is since I am running SN95 (1994-2004) Mustang based suspension - the sky is the limit with aftermarket parts.

Front suspension will consist of (parts are on the way or in hand now for one car):
Maximum Motorsports front tubular lower control arms
Koni dual adjustable (DA) front struts with adjustable rebound and compression damping
Maximum Motorsports coil over kit
Maximum Motorsports caster camber plates
Stock Mustang front spindles/hubs
Hypercoil springs - have not decided on rate yet

Since the strut rods are no longer needed, the brackets that house the bushings were removed. Custom brackets will be made up to stiffen the area once again and also provide mounts for the radiator, A/C condensor and ABS unit.

http://www.twintorino.com/images/tex...t_susp_012.jpg

With the suspension almost in position, the stock control arms make contact with the frame. Tubular control arms correct this issue, although just barely. The goal here is to get the suspension in the exact same position as in a stock Mustang to keep the suspension geometry the same (easier said than done as we are finding out).

http://www.twintorino.com/images/tex...t_susp_013.jpg

Nearly new tubular control arms compared to the old ones. Since we are running coil overs, spring pockets are no longer needed. They are also lighter and much better looking.

http://www.twintorino.com/images/tex...t_susp_014.jpg

As for the subframe connectors - hoping to have them in within the next week or so. The passengers side is nearly ready to go in. Just have to jog the subframe connector 4" as the front subframe is 4" inboard of the rear (more to come on that shortly). As you can see, the front trans mount has been removed, and the remaining piece left will be used for welding to the connectors. A custom trans mount will need to be made for the 6-speed, and also a driveshaft loop needs to go in as well as seat mount supports. This will all make a bit more sense once they start going in.

http://www.twintorino.com/images/tex...nstall_001.jpg

Got started on laying out the driving position this week as well.
Starting fitting the Sparco's into the car. They are extremely comfortable and will help keep a person planted when on the road course. Stangely enough, sparco does not make seat adapters to bolt into a Torino, even though the model name is Sparco Torino :).

http://www.twintorino.com/images/tex...nstall_001.jpg

Started to fit the Mustang pedals into the car. Several reasons for using these instead of Torino ones. Mustang uses a cable clutch and Torino ones need significant mods to make work with the clutch quadrant. Want to be able to keep the stock Mustang pedal ratios going into the hydroboost. Want to be able to use the stock Mustang electronics since all the dash wiring is from a 2004 Mustang. Also like the pedal positions much more and they are much better for heel/toe driving on the track. Measurements were taken from a 2004 Mustang to be able to position the pedals the same distance from the firewall, height off the ground, and releationship to the steering wheel. The goal here is also to use a stock floor shift Torino column as I hate the look of a new column in an old car.

http://www.twintorino.com/images/tex...pedals_001.jpg

Well.. here is the first issue as we were expecting. The clutch quadrant hits the windshield wiper motor area. This area will need to be modified to make it work. It is looking like we will end up grafting a Mustang firewall onto the Torino. That way everything will bolt right up (including brake clutch and gas pedals, steering column, hydroboost unit, heater box and all wiring and cable pass throughs) and look much cleaner. Since we have 2 complete Mustang firewall assemblies and a plasma cutter.. this should not be a big deal.. famous last words I guess.

http://www.twintorino.com/images/tex...pedals_002.jpg
Stay tuned..

Made some more significant progress on the front suspension of the car. Koni dual adjustable struts came in (used of course) and also the Maximum Motorsports coil over conversion kit.

http://twintorino.com/images/texas_front_susp_015.jpg

In order to get the suspension in place and get the suspension in the correct vehicle position, we needed to build a fixture that would work with our chassis jig. The k-member was used as reference and mounting points were chosen and located. Once this was built, it was placed on the vehicle so a tire and wheel could now be put into place. Finally starting to look like a real front suspension. Lets just say that 18x10's are a tight fit up front and will likely not fit. They will likely need to be narrowed as that is the only size they come in. They are Roush forged 18x10's and will likely be the track trims. Lots of new clearance issues came up with this.. and we be datailed as the install continues. The coil overs are going to prove to make matters worse for clearances. More carnage to come tomorrow (Torino Tuesday) as we start hacking up the firewall to fit all the Mustang components. Stay tuned..

http://twintorino.com/images/texas_front_susp_016.jpg
http://twintorino.com/images/texas_front_susp_017.jpg
http://twintorino.com/images/texas_front_susp_018.jpg
http://twintorino.com/images/texas_front_susp_019.jpg
http://twintorino.com/images/texas_front_susp_020.jpg

Now I know you already bought the struts and stuff for the front but they really do create issues with rim selection. Have you thought about using some parts from factory five racing, the kit car guys, they have parts that convert the mustang spindles into dual a-arm units. they have done a lot of work making these stout and setting them up for the track very easy.
http://www.ffcobra.com/photopost/dat...m/DSCN2671.JPG
http://www.ffcobra.com/photopost/dat..._day_11-09.jpg

I'm not telling you what to do but some times you have to rethink rather than compromise
Thanks for listening,
Patrick

Patrick - I appreciate your input. I definitely hear what you are saying on that one. In the end it came down to two things for us - cost and project goals.

We determined that running coil overs on the front would likely limit us to 275's on the front, but in reality that is as wide as we would ever be running anyway. If we wanted to go wider, that would mean widening the fender flares which we are trying to avoid. The strut based suspension will take more fabrication in the end, but that only costs us time at this point. I also wanted to stick to a suspension setup I know a lot about and have experience with as far as tuning goes.

As for cost - by the time we add up the price of what we have into the front suspension parts, we could not even buy a set of front shocks that we would need (Koni 3012 based dual adjustables). I know this as I just had to order 3012's for the rear of the car as we have no choice and they are damn expensive.

Moving onto the powertrain - it is now time to rebuild the transmissions in the midst of things. Since we both bought known broken transmissions (to save money of course) we knew we would have to rebuild these anyway. We decided to upgrade the known weak points in the T56 transmission since these cars will see some track duty. The kit upgrades the trans with carbon kevlar synchronizer rings and replaces all of the typical wear items. There are two main weak points inside the case: 1) The stamped 1-2 and 3-4 keys are being replaced with billet ones as shown below. 2) The aluminum 3-4 shift forks are being replaced with steel pieces (from a Viper trans), and also replaced the plastic fork pads with brass ones.

http://twintorino.com/images/torino_...ebuild_001.jpg
http://twintorino.com/images/torino_...ebuild_002.jpg
http://twintorino.com/images/torino_...ebuild_003.jpg

After going back and forth on how to make these pedals work out, along with the clutch cable, gas pedal & cable, heater box, wiring harnesses, steering column pass through etc. etc, we can to the conclusion that the firewall would likely be hacked to pieces by the time we got done with it. If only we had a firewall from a Mustang. We had two that were already part of a complete car, but those have lots of other pieces spot welded to them and they would likely be ruined trying to get the out, let alone how long it would take. I put a call into a friend who works at a dealer, and the next thing I know he was telling me that firewalls are available and are cheap! I guess when you think about it - how often would a firewall be replaced? Are car would likely be written off before needing to replace one. As you can see below - everything wil bolt up nicely and look like it was supposed to be there. Obviously this is not a quick bolt on modification and will require lots of cutting and welding, but it will be worth it in the end for sure. In the end, the cost of the firewall was less than 2 replacement Torino toe pans, so this was a no brainer.

http://www.twintorino.com/images/tex...l_mods_001.jpg
http://www.twintorino.com/images/tex...l_mods_002.jpg
http://www.twintorino.com/images/tex...l_mods_003.jpg