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Replace 5 speed getrag 265 with a getrag gs6-45dz from a later diesel bmw to improve gearing on highway, smoother 1-2 shift
Plan
Parts
Gallery
Decisions & Unknowns
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Flywheel
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Pilot bearing
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Clutch disc
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Pressure plate
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Transmission mount
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Wear items on transmission
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Seals (Alex replaced)
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Synchros (inspected while disassembled)
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Driveshaft + giubo
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How to adapt trans output shaft 3-bolt pattern to smaller m47 driveshaft 3-bolt flange? Adapter from speeding doesn’t fit 45dz (made for 53bz); Alex building custom front driveshafts from front 940 driveshaft and new 3 bolt flanges
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Shift carrier bracket
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which one? (Jacob’s custom concoction of e90 front and e60 545 rear with sheet metal template connecting the two; bolts to chassis with stainless plate and bushing retainer
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How much to shorten? See Jacob’s photos for measurements
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How to mount to body? Jacob’s custom concoction stainless plate with OEM bushing mount
Tasks
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(Alex) build transmission centering fixture
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Inspect synchros while disassembling transmission
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Cut off old bellhousing
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Machine cut face flat
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Weld on new bellhousing adapter flange
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Order 2x 240 front driveshafts
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Ship rear driveshaft and center support for balancing with new front shaft
