Mythbuster: continuing project thread of my 1303 '75

[Wally]

Originally Posted by petevw

Wally, ever try a solid center clutch disk?

Pete

Nope, not even ever any semi-metallic pad...

[Wally]

While waiting for the disk to arrive, I cut some polycarbonate ('lexan') sheets for the side windows.
I thought they were lighter than the 1,5kg I saved per side window (2,45 to 0,95kg), but its weight up high, so it will benefit more in the corners I suppose.

[Wally]

As the 6-puck has not arrived yet and I need to run on sunday, I have reinstalled the old organic disk. Flywheel has been resurfaced and machined down so the pressure plate now has some more pre-load. Fingers are now perfectly horizontal. This should give some better holding power by itself and it did
Boost has again been tuned to 14.5 psi and oh boy what a rush once 3000 rpm gets passed

From the datalog I could see that at about 2850 rpm there is 0.5 bar or 7 psi boost and at 3500 rpm the full 14.5 psi is reached. The engine easily runs up towards 7000 rpm, but I want to stay before that for a little bit longer as I am not sure where max hp will be.
Coming saturday there is a local mobile rolling road dyno (more or less just across the street for me) so I will try to enter the car there.

I only ran the full boost in 2nd and 3rd as to not risk a premature clutch burn-out but that went well. So fingers crossed for saturday when the dyno run will be done in 4th.

Very curieus what it will get, providing the clutch holds .