Original post by dfskjfksa,
What is the black tape that secures the fans to the heatsink?
It seems simply to be a high-quality electrical tape, but just to be sure, could somebody take a micrometer to it? I suspect that it's 3M Super 33, which, for reference, is 0.18 mm thick.
MacBook Pro 15" Core 2 Duo Model A1211