Thread: M103 swap and manual transmission conversion
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Old 07-27-2023, 08:29 PM
benzguy300 benzguy300 is offline
Benzguy300
  
Join Date: Dec 2006
Location: Fontana Ca
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Quote:
Originally Posted by RobertFini View Post
I'm interested in hearing more about this swap, as well.

I have a 1984 190E W201 with the 2.3 litre M102 and five-speed manual transmission that we built up as a stage rally racer and then became a really fun track-day toy, but is now rusting into the ground and beyond the point of saving. My daughter has a 1993 190E Sportline LE W201 the with 2.6 litre M103 and a four-speed automatic into which I would like to swap the five-speed. Since I have the entire donor, car I'm thinking that the only issue will be with the flywheel and maybe the driveshaft.

Has anyone else done a M102 to M103 manual conversion and what are the hidden secrets?

Best Regards,
Rob
You are right the flywheel is different the M103 engine needs the flywheel to have 3 timing tabs on the back the M102 only has 2 the driveshaft in the 84 uses a smaller yoke every thing else is the same
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