Few bits and pieces on standby ready to go in...

Tilton 5.5" carbon clutch. This clutch is pretty trick weighing a measly 13.8 lbs for the clutch, flywheel, hydraulic bearing, and all hardware. Using this clutch deletes the requirement for a clutch for and the stock throw out bearing. No more messing around with the fork, shaft, and clutch slave on install! This is essentially the same clutch used on the RSR. My old 996Cup clutch which came out of the car was 25.8 lbs by comparison which includes PP/disc/LWFW/ring rear/fork/T.O bearing/hardware. For those wondering, the street LWFW clutch most run consists of 764PP/4.0GT3disc/964RS LWFW and weighs just under 30lbs with all the components. The MOI of the carbon 5.5" Tilton is a fraction of the typical LWFW clutch which will allow for substantially faster shifts than would be possible with a traditional clutch.

OUT WITH THE OLD:



IN WITH THE NEW:

 

That is very pretty; what is the life expectancy of the discs?

It looks a very 'on/off' situation...

 

This car is such an animal.

 

Type of use will govern life expectancy. The discs last a very long time but we will need to change out the floaters as the discs wear. This clutch with steel discs is very much on/off, the carbon discs allow for more slippage making it much more progressive. This tiny clutch holds 750 ft.lbs of torque which is very impressive.

 

Very nicely done. It looks like the leading edge of the rear seat was cut out and then re-welded. What is the reason for that?

 

The OEM crash tube is embedded in the front edge of the rear seat area running from side to side. This bar was cut out along with the steel crumple box in each side of the tub. Once this was done, the open "channel" was welded shut with a thin piece of sheet metal.

 

That's nice that it is progressive (as it were); my only experience with a carbon clutch was a Cusco twin plate in the Sti - not progressive at all, in fact, very on/off - neat for full rpm launches, atrocious for city driving. Had absolutely zero problem holding 600ish HP. It has since been replaced with a much more city friendly single plate.

As your car evolves into a monster of a track beast, I am reminded of a simpler point in my life when I had the time to engage in projects like this. Good on ya, it will be very cool when it's completed.

 

Beautiful engineering! Not only will the car be much safer the chassis stiffness will really improve driver feedback and aid the suspension in working better. I have the Tilton multi disk carbon clutch on my car and it works well even with the very long first gear in my Albins gearbox.

 

Wow, incredible build. I think you should go wheel to wheel with diverdog?

 

I'm sure at some point our paths will cross....

 

Here is the complete harness that came out of the car, all 62 lbs of it not including the bin. It's amazing how heavy the OEM wiring is. The Motec harness should be about 10 lbs by comparison making for a nice 50 lbs weight saving in just the wiring.

 

I hope so. It's been great sharing ideas and results online. I do want to race at Utah and Colorado tracks in 2022.

 

I'm sure I'll do a NASA event or two at UMC in '22. Try to come out to HPR at some point. Let me know and we'll coordinate.

 

Ever considering cutting out the rear bulkhead and making a closeout panel for quick access to the front/top of the motor? I guess now that the cage is there, it would have been before. But looks like that's a point for mounting all the ECU/telemetry stuff. I kind of want to do it to mine.

 

Out ECU and PDM is going to be mounted on the lower vertical face down below the seat area on the passenger side. The small LiOn battery is going to be mounted to a bracket on the floor in the same area far enough back to allow a passenger seat to bolt in.

We've thought about mounting an airbox with a filter on the back shelf and running two hoses, each one connected to a NACA duck mounted in each side window. This would eliminate the airbox in the engine compartment and provide a short air intake path to each turbocharger. Not 100% decided on that yet.