I meant if it were an easy, simple job a lot of us would have done it. I was aiming more at the preference for simple, reliable parts than whether the swap itself was difficult or not. Any time you start talking about removing a dash I'll give you the Major PITA factor without question.

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I suggest we solve high gas prices with environmentalists... unfortunately they don't burn well.
1982 300CD, 220K miles: This vacuum system will be the death of me yet! (OBK #26)
1977 F150 400 C6 2wd, 10.2 sec 1/8 mile with 2.75 gears.
1965 Mustang. Mostly stock... LOL!
2001 Ram 2500, cummins, 5spd, 202k miles.(girlfriends)

I wouldn't do it, I'd rather troubleshoot vacuum systems than electrical systems any-day. Once you get everything working correctly, it's pretty easy to fix individual problems as they come up.

I don't see how it would be all that difficult to swap the HVAC system from a 300D to a 240D. I have had the dash out of my 300D twice, once to replace the vacuum solenoids and the other time to replace the heater core. To do the heater core the whole HVAC box had to come out. Time consuming and tedious, yes. Difficult, not too bad. If I had a 240D sitting in the next garage bay to swap the parts directly over it would be pretty simple.

Granted this is pretty involved and you have to have the tools, space, parts car, time and ability to pull it off. Its a lot of effort but the result is a much simpler HVAC system and likely years of trouble free operation. I came very close to doing just this when I had to go in the second time to do the heater core. I just couldn't find a 240 donor fast enough. RT

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When all else fails, vote from the rooftops!
84' Mercedes Benz 300D Anthracite/black, 171K
03' Volkswagen Jetta TDI blue/black, 93K
93' Chevrolet C2500HD ExCab 6.5TD, Two-tone blue, 252K

Hi , please unerstand electric or vacuum the princeables are the same ! just remember its all about flow ! think about it, all you have to do is get a schematic and isolate the circuts !! whats the differance between a
vac-pod or a solinoid ? a diode or checkvalve ? wire or a hose !!to me its the same! For the amount of time to convert I could rebuild a 617 !my 2 cents !

It's easy to see electrical leaks. Or feel them for that matter.

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I suggest we solve high gas prices with environmentalists... unfortunately they don't burn well.
1982 300CD, 220K miles: This vacuum system will be the death of me yet! (OBK #26)
1977 F150 400 C6 2wd, 10.2 sec 1/8 mile with 2.75 gears.
1965 Mustang. Mostly stock... LOL!
2001 Ram 2500, cummins, 5spd, 202k miles.(girlfriends)

Like I said you got to get a vac gauge and break the circuits down to groups! it a hose, All it takes is a little common sence !

My w123 car is/was a 1980 European 230 - that was blown up by my neighbor’s daughter. I bought it for $500 at the age of 15. It does have a Ford power plant because a neighbor of my grandparents gave me that car free. So...

The w123 had two options...adjustable headlights, and a rear-heated window.
The Ford had a lot of options...one being power locks...so a little while with some aluminum, and a few bolts and wire cuts later - the car was equipped with power locks...albeit it the filler door...

The HVAC is manual...and I love it...both functionally, and aesthetically...

Power in my w123 is not a problem with the Ford power plant; the Eaton supercharger and the front mount air-to-air intercooler.

Jake