My diff swap is turning into a can of worms. I bought a 3.45 open diff from someone however I'm not 100% which car it came from. I believe it's either a z3 or 318ti because the differential flange cover has the thinner o-rings and the output shafts are the shorter “dumbo ear” style. When I bought the o-rings and output shafts the part numbers showed a range of years and models. My car is an 84 ETA and my speedometer pulse sender plug has a different connection. Since the pulse sender is shorter in the 3.45 diff I'm not sure if swapping the cover will work. Is it possible to solder in a late model pig tail? Any help would be greatly appreciated. BTW the diff looks to be the same size and dimensions to bolt up.
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Diff Swap Help
My diff swap is turning into a can of worms. I bought a 3.45 open diff from someone however I'm not 100% which car it came from. I believe it's either a z3 or 318ti because the differential flange cover has the thinner o-rings and the output shafts are the shorter “dumbo ear” style. When I bought the o-rings and output shafts the part numbers showed a range of years and models. My car is an 84 ETA and my speedometer pulse sender plug has a different connection. Since the pulse sender is shorter in the 3.45 diff I'm not sure if swapping the cover will work. Is it possible to solder in a late model pig tail? Any help would be greatly appreciated. BTW the diff looks to be the same size and dimensions to bolt up.4 PhotosLast edited by 808ETA; 07-03-2020, 05:17 PM.sigpic84 325eTags: None
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Originally posted by bmwman91 View PostSee if you can get the old pulse sender to work in the new cover first. If you get a speedo signal, then it is fine. You can always put in the 318ti sender and splice the connector on after everything is reinstalled.sigpic84 325e
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