Engine Removal Question
I don't post much on this forum but I troll for info like everyone else. Now I'd like to contribute by letting you guys know what I'm up to.
Some of you may know me from my YouTube channel, Yogi's Garage. Recently, I've been working on a 2002 Porsche 911 that I rescued from Florida. About 6 months ago I purchased a 95 E320 Wagon from a "friend" which turned out to be a dud. Someone decided to trash the engine by tossing nuts and bolts into the intake. The ones that made it past the valves destroyed cylinders 5 and 6, thus destroying the block and head. I finally was able to source a donor 3.2 and am ready to pull the engine. My question is whether or not the transmission has to come out with the engine. Official repair guide states (briefly) remove the entire power unit but I'm not convinced it's necessary. The engine bay is HUGE and it looks like I can disconnect the transmission and leave it in place. But, since I'm newb to the W124 I'm looking for advice and recommendations.
Take a look at my Audi series called "Project: Olaf" where I was advised to remove the whole unit but after I did I realized it could have been left behind. My Porsche, Project: Pepper I also removed the manual gearbox but intended on flushing it out anyway. However, the box is small enough not to require much more effort. The Benz on the other hand is HUGE and with now two projects going in my garage, real estate is at a premium. I'm hoping to just pull the engine and install the donor back in the car. I have an engine hoist. Let me know your thoughts.
Last edited by lululu; Jun 4, 2022 at 12:32 AM.




One word of caution though in your case, the life of a auto transmission '95 W124 is about 150K miles due to a weak design choice of materials in the reverse clutch seal. The plastic was later replaced to a metallic seal. Unfortunately the trans has to be rebuilt just for that.
It could go over 200K miles, or it could loose the reverse like my sportline did at 145K miles. I was the original owner, and the new owner who had ruined his engine due to a neglected head gasket issue (another design defect) swapped his transmission into my sportline and chucked his '95.
- Cheers!
One word of caution though in your case, the life of a auto transmission '95 W124 is about 150K miles due to a weak design choice of materials in the reverse clutch seal. The plastic was later replaced to a metallic seal. Unfortunately the trans has to be rebuilt just for that.
It could go over 200K miles, or it could loose the reverse like my sportline did at 145K miles. I was the original owner, and the new owner who had ruined his engine due to a neglected head gasket issue (another design defect) swapped his transmission into my sportline and chucked his '95.
- Cheers!




See how long it takes to engage. If it takes long like a couple of seconds, you have your answer, the reverse clutch seal could be on it's way out. If it has not been rebuilt at 225K, I would be nervous, very nervous about replacing the engine without servicing the transmission.
There are two camps on changing the trans fluid on these cars. Most of the time it does more harm then good if it has not been replaced in a long time. So if it has been serviced regularly you will see no short term change of course. If it has been neglected for a long time then new fluid I hear can make it worse unexpectedly. So there is no winning with the flush. I would just drain a tiny bit and see how the fluid looks. If it is in really bad shape, I would then stop and question whether you should continue to flush it.
- Cheers!
See how long it takes to engage. If it takes long like a couple of seconds, you have your answer, the reverse clutch seal could be on it's way out. If it has not been rebuilt at 225K, I would be nervous, very nervous about replacing the engine without servicing the transmission.
There are two camps on changing the trans fluid on these cars. Most of the time it does more harm then good if it has not been replaced in a long time. So if it has been serviced regularly you will see no short term change of course. If it has been neglected for a long time then new fluid I hear can make it worse unexpectedly. So there is no winning with the flush. I would just drain a tiny bit and see how the fluid looks. If it is in really bad shape, I would then stop and question whether you should continue to flush it.
- Cheers!
Addendum to my question. I'm disconnecting the transmission drive shaft and had a question. Can I remove the transmission mount(the one with the exhaust mount point)? Also How do I disconnect the black conduit (see arrow)? Or do I even have to? Thanks.
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