Who 'built' the M635CSi - Page 4 - BMW M5 Forum and M6 Forums
E31 850 CSi and E24 M635 CSi M635 CSi (E24) 1983-89 and 850 CSi (E31) 1992-96. The Ultimate Grand Turismo by BMW M.

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post #31 of 32 Old 22nd February 2013, 03:09 AM
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Originally Posted by bmwmtechnike24 View Post
that is the first time I hear that,the the quarter panels and the hood is different.do you have a pic of the us hood and trunk spoiler?I only knew those other things.
what is different?
what do you mean with pucs,are those the plates under the cam lobs?
The difference are very minor, but enough that if you are welding in new panels, they are not interchangeable. You can tell by the different part numbers in the ETK for the M6 vs the M635. It looks as if on you car, you have the later version M6 style trunk spoiler. Compare yours with the photos of either of my M635s in the other post and you will see the difference:


Yes, the cam adjustment shims on the M88 are different than the S38. On the hood I believe one of the differences is the cutouts for the windscreen washer nozzles and perhaps the mounting location for the gas springs that open the hood.
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post #32 of 32 Old 25th March 2013, 04:58 PM
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It's about the timing

Very simple answer Mike about what they are referred to differently in Europe and the USA. It's about timing. When the M635csi was launched in Europe in 1984, BMW was using the model naming nomenclature they had used with the M535i. For whatever reason they decided to change that soon after and called the mechanically very similar E28 car the M5. It w only later of course that the E24 in M car guise was launched in the USA. By that time the model naming rules had changed and it was called M6 for that reason. BMW, being good German traditionalists, never changed the name in European markets. As a matter of interest they called the car M635csi in my home market of NZ as well despite that fact that no cars were sold there until 1986 or so through dealers. This was because NZ was using UK spec cars so the name remained in accordance with the UK rules. As a matter of interest 20 of the UK spec cars came to NZ and were sold new. Mine was probably the last sold in 1990 even though it was a chrome bumper car delivered to the NZ dealer in 1987. Blame the recession. So in a nutshell there is nothing more to it than timing. The engine numbers and so on are not, to the best of my knowledge linked to the naming. It was just different markets over time and the changing nature of the value that BMW AG saw in the emerging M brand. All the best. Kiwiphil
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