bowtie6’s new frame gets a new differential. In order to handle the power of the ECOTEC – remember boost is in the plans – we needed something that would not break. Furthermore, one of my requirements for the new drivetrain is to have full posi-traction (and by this I mean the real deal and not viscous).
In the following gallery, you will see the following:
- The rear axle is a narrowed 9″ Ford. Yes, it might be a little overkill but again, this is all being built so we don’t have any unexpected “failures”. The solid axle in this application will by far surpass the IRS as originally implemented.
- The diff is a Motive full posi-traction unit. It is set up with a 3.80 to 1 ratio – it is a bit tall in first gear with the Solstice’s AISIN gearbox but you have to remember this: I am not building this to be a drag car. With this ratio, the car is extremely quick and nimble at speed. From the setup in my cousin Jim’s TR4, we have determined this rear axle ratio works fantastic with the engine in second, third and fourth gear; with fifth being even more fun at speed.
- You can see in the pictures the special order Moser axles. These were custom made with the correct length in order to handle the narrowed housing.
- The rear axle is held in place as a four point suspension. The control arms are fitted the special Heim ends. These were quite pricey and come with special seals to keep dust and grit out. Why Heim ends? I’ll have an article about this later…
- Finally, take a close look at the driver’s side axle: the rear brake rotor is fitted. Yes, we will be re-using the disc brakes we had previously used.
- Not shown in the pictures is the all new, custom made brake lines. We are using stainless tubing this time and it has all been hand made, and bent just special for this frame. I’ll have a future article about this because the mounts that Jim made are real special.