BMW M54 Valve Spring Compressor

prusaprinters

This is a simple valve spring compressor tool I designed for the M54/52 cylinder heads. I printed this in Overture PC on a Bambu Lab X1C in draft mode (0.28mm layer height) with 4 perimeters and 100% infill and I recommend using these settings, although I printed one with only 20% infill and it also held up just as well. I think PLA and other materials would also be suitable at 100% infill but I haven't tested it. V3 is slightly revised from v2 with a 5mm reduction in height and with more clearance to accommodate the cam tray locating rings around the base of the studs in each corner of the head but I haven't tested v3 yet. Edit: v3 confirmed to work, print this instead of v2Recommended Print Settings:0.28mm layer heightSupports from build plate only for v3, none for v24 perimeters100% infillThe washers seen in the photo aren't necessary, at least with PC. I stopped using them after the first pair of valve springs and the tool held up fine. Wear safety glasses!!