ive done it on other cars by wrapping the outside edge of the steel sunroof with a piece of 5mm wire rod which you can tack weld to the sunroof as you fold it very neatly around the top edge and then once its back in its hole you can weld it into the roof. 5mm is a good fit on a bmw compact but ive never measured a prelude one.
littlefeller wrote:it weighs around 25kg, theres more weight to save in the bonet
The glass weighs 25kg?
I'd be hesistant to agree with that! My experience/knowledge tells me that glass weighs 2.5kg per square metre for each 1mm of thickness. Assuming the sunroof is 4mm thick that's 10kg/m^2 and you can work the rest out.
The whole sunroof with gubbins (motor, runners etc) weighs 25kgs. I'll be making a CF roof skin....... eventually. Still have a list of other parts to make
PAW rebuilt 98 prelude 228bhp & 171lb/ft R.I.P.
PAW rebuilt 01 ATR 238bhp & 164lb/ft sold
Monte Carlo Blue 02 S2K