Hello! I discovered a water infiltration on the rear of the mini. Some puddle of water accumulating at the back of the rear floor pan where it meets the "bulkhead" of the boot.
I changed the boot seal and the rear quarter opening window seals, and yes its a much tighter fit, It feels better sealed.
Now I can tell that one of the window piano hinges doesnt compress the window against the body properly. I sprayed some water and indeed, water leaks in from it.
What's the best solution for this? I thought about shims on the piano hinges, but if there is a cleaner solution I am all ears!
Could I also bend the hinges to create a greater angle and make it close better? or just swap hinges.
Thanks for your suggestions!

Rear Quarter Piano Hinges Shims
#1
Posted 11 May 2025 - 02:17 PM
#2
Posted 11 May 2025 - 10:32 PM
I've shimmed the catches effectively. Is the edge the seal sits on flat? It may settle down, it looks like it's the seals going round the corners holding the glass off
#3
Posted 13 May 2025 - 03:23 PM
I went ahead and 3D printed a pair of spacers for the window hinges. Now the hinges compress really well the seals. As for the quality of the minispares seals.. I am unsure, the seal welding seems to let the water in a little bit, just one window. I can say they are still thicker that the previous ones. I really soaked the windows with a hose.
I might apply some silicone sealant as well or something along those lines. 99.9 percent of the infiltration is fixed with that.
Attached Files
#4
Posted 15 May 2025 - 06:16 PM
I've decided to make these available if anybody needs a set. These plus new seals, resolved the issue of water coming inside the car from the rear windows in my classic mini, cheers!
https://www.etsy.com...iVgzRF6LJ9cNaYg
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