Current Options for w123 240D Mounts? - PeachParts Mercedes-Benz Forum

JHZR2 · #1 06-27-2016, 10:09 PM

It seems that the mounts for w123 240D engines are not that common. Looking here on Pelican, there is URO (no thanks) and genuine MB. No Lemfoerder, no Phoenix, etc.

Options exist for 300D cars but not 240Ds? Why? The 240D has more vibration/harmonics than 300D does, IMO. One would think that would be the line to keep going.

So what are the options? $200+ for two OE mounts (not the worse thing, not a job one wants to do regularly), or junk? Recommendations?

RA and other sites don't seem to offer much better...

Clemson88 · #2 06-27-2016, 10:15 PM

A few of the guys on this forum have refurbished their engine mounts. Seems like they used a process with polyurethane. It's a matter of using the search function here and becoming familiar with the DIY links.

JHZR2 · #3 06-27-2016, 10:38 PM

I've been on this site since 2002. I know the DIY (written multiple myself) and search. I'm not interested in refurbishing - just getting quality mounts. I'd rather not pay $136 each for MB mounts, but also don't want to buy junk.

sgnimj96 · #4 06-28-2016, 01:00 AM

or....
buy the cheapos and add the polyurethane to them

That Dang U is becoming the only of a lotta the parts these days. I suspect some other brands are just the illusion of choice.

whunter · #5 06-28-2016, 02:47 AM

Quote:

Originally Posted by JHZR2

It seems that the mounts for w123 240D engines are not that common. Looking here on Pelican, there is URO (no thanks) and genuine MB. No Lemfoerder, no Phoenix, etc.

Options exist for 300D cars but not 240Ds? Why? The 240D has more vibration/harmonics than 300D does, IMO. One would think that would be the line to keep going.

So what are the options? $200+ for two OE mounts (not the worse thing, not a job one wants to do regularly), or junk? Recommendations?

RA and other sites don't seem to offer much better...

I use W123 300D engine mounts with no issue.

That said, here is the link for rebuilding your old mounts.

Homemade Polyurethane Engine Mounts - bushings
Homemade Polyurethane Engine Mounts - bushings

.

Screwdriva · #6 06-28-2016, 07:52 AM

Why would you not source the mounts from MB?

Dan Stokes · #7 06-28-2016, 09:29 AM

Quote:

Originally Posted by Screwdriva

Why would you not source the mounts from MB?

Price.

BTW - I'm using cheap aftermarket mounts in my application and so far no issues. Can I "recommend" them - probably not, but I can assure you that I stress mine more than most folks would.

Dan

JHZR2 · #8 06-28-2016, 09:40 AM

Quote:

Originally Posted by Screwdriva

Why would you not source the mounts from MB?

I could/might.

But my angle is this:

1) Do we know that the 300D mounts fit in a 1981 240D? WHunter seems to say yes, but is it definite?

2) If they dont fit, why doesnt another aftermarket maker make the 240D mounts?

3) If they do fit, why doesnt Lemfoerder or Phoenix or whatever quality offerings show up on PP?

For a 1981 240D, it shows URO and MB. Literally over $100 each price difference...

Im not really interested in changing the mounts to something different by adding poly or doing other modifications. I just want to replace with the right part.

If the mount from the 300D is indeed the same part, that makes life MUCH easier...

Thanks!

greazzer · #9 06-28-2016, 10:18 AM

I picked up 300D mounts here on PeachParts (Pelican) Lemforders (I think that's spelled correctly) for under $50 shipped for a pair less than 6 months ago for my 240D. I think that is probably the best and least expensive route possible.

JHZR2 · #10 06-28-2016, 10:25 AM

If one goes here:

Mercedes-Benz 230/240/280/300 (1977-1985) W123 - Engine Miscellaneous - Page 2

They can scroll down and see all the W123 mounts that PP offers...

There are at least five different part numbers available.

Only 123-241-30-13 is available made by Lemfoerder. That is a part number for an 82 and newer turbodiesel 5cyl. The correct part number for a 240D is 123-241-12-13.

So just to be definite...

Will these fit interchangeably?

Will these operate/feel different?

Clemson88 · #11 06-28-2016, 11:24 AM

Quote:

Originally Posted by JHZR2

I've been on this site since 2002. I know the DIY (written multiple myself) and search. I'm not interested in refurbishing - just getting quality mounts. I'd rather not pay $136 each for MB mounts, but also don't want to buy junk.

My apologies for offending you with the comments on using search functions and DYI links. I did not notice your join date and do not remember names well. I suppose it is some limit set by my genetic defects. I certainly put my foot in my mouth with those comments. The size isn't incompatible but it isn't my favorite flavor.

I hope you do not find it insulting if I ask why you would consider Whunter's statement about the interchangeability of those two particular engine mounts to be ambiguous.

JHZR2 · #12 06-28-2016, 12:08 PM

Quote:

Originally Posted by Clemson88

My apologies for offending you with the comments on using search functions and DYI links. I did not notice your join date and do not remember names well. I suppose it is some limit set by my genetic defects. I certainly put my foot in my mouth with those comments. The size isn't incompatible but it isn't my favorite flavor.

I hope you do not find it insulting if I ask why you would consider Whunter's statement about the interchangeability of those two particular engine mounts to be ambiguous.

Not offended. Just making the point that I know of and have seen a lot of the history on here.

I see the mount issue as twofold:
1) does the 81 240 mount have the same form and fit as the 82-85 turbo diesel mount? I think the answer is yet.

2) why are the part numbers different? The fsm implies a different shore hardness between 115 and 123 cars, but doe airside between gas and diesel 230, 240d, 280, 300d and 300d turbo cars?

leathermang · #13 06-28-2016, 12:41 PM

Knowing that the MB engineers were OCD about everything...which we appreciate most of the time...... I would bet that they made the rubber compound different between the two... as the weight of the two differs due to both the extra cylinder AND the turbo...
but new rubber of a different elasticity is better than an old failing one.. which may also have a unseen break hiding somewhere...

Zacharias · #14 06-28-2016, 01:56 PM

Quote:

Originally Posted by Screwdriva

Why would you not source the mounts from MB?

Because the dealer mounts are about 2.5x the cost of the OE alternative, Lemforder, which most people consider to be equal or near equal quality.

Zacharias · #15 06-28-2016, 02:03 PM

[QUOTE=JHZR2;3610701] why are the part numbers different? [QUOTE]

I suggest for the same reason there used to be separate part numbers for left and right mounts on the turbodiesels, or for the rear shocks on w126s and w123s.