bigben
Active Member
I am looking to do a swap for my r107 (1973 450SL). The engine has been sitting for 14+ yrs and at least the cams have developed rust pits from moisture. Probably there are problems in the rest of the motor. I was able to start and run it for couple of minutes.
I have located an M104 for my car and wanted to know what was the outcome of your swap (i.e. sump pan, engine mounts, other clearance issues, etc)? I have not purchased the motor yet.
To my shame I don't have the engine fitted into the car yet, somehow spending time in the garage is less compelling when it is cold.
With retrospect I 'think' the M104 will fit without sump modification but won't know for sure until I do the job. I am planning to put the new engine in using a different method that involves removing the front sub frame which the engine mounts to and lifting the car over the engine, this should be much more comfortable than coming out through the top.
Since I will be removing the sub frame I am going to renew / rustproof all the bits around it whilst I am at it which will delay things even more........
Somewhat agree with the poster above that if you are just looking for a later engine for your 450 then don't write off the M103 as this should be an easier swap.
Ben