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#1
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late M104 belt tensioner on M103?
Is it possible to retrofit the late style M104 serpentine belt tensioner onto an M103?
I'm getting ready to swap a 3.0 M103 into a 190E and while I have the engine out, degreasing and replacing the water pump, hoses, etc...I was wondering if I could upgrade the belt tensioner to the simpler late style. Anyone? |
#2
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I don't think the late M104 tensioner works on a M103....the early 104 one does, but not the later version.
__________________
-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k) |
#3
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But I wonder if all that needs to be changed is the a/c compressor bracket?
Anyone? |
#4
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babymog would know for sure, but I think I recall him saying that such a swap would not work.
__________________
-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k) |
#5
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Anyone?
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#6
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In case anyone is wondering, this swap is very possible although with the expense, it may not be worth it to you.
Basically, you need the following: - late M104 a/c bracket (A104 236 01 30) - late spring loaded tensioner - late tensioner pulley (104 200 10 70) - late rear powersteering pump bracket - and the big one...late a/c compressor and appropriately modifed hoses I have everything but the compressor and hoses which I will most likely source used. If you don't want a/c, you can leave the compressor off and use a shorter belt. So, to answer my own question, yes...the newer M104 spring loaded tensioner will bolt-on to an M103 engine with the above parts. Is it worth it? You'll have to decide that for yourself. Last edited by Glen; 10-27-2009 at 11:35 AM. |
#7
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Seems like a lot of work/hassle/expense when the normal M103 tensioner seems to work just fine for the most part. I've had no issues with mine so far....
__________________
-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k) |
#8
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I agree but the first time you change the belt with the new style tensioner and then compare it to the old style and it may just seem worth it. LOL.
I'm doing all this testing with an engine out of the car, btw. |
#9
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I'm still working on gettin the late '95 PS/AC/etc. to work on a 603, ... but can say that the late M104 tensioner assembly is an improvement over the 103/early104 tensioner.
__________________
Gone to the dark side - Jeff |
#10
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Jeff:
What do you have left to do? Isn't it all plug and play (assuming you modify the a/c hose)? |
#11
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The late (R134a) compressor is held at a different angle, wiring is different, plumbing is all different (aux. pump in a different place, heated washer bottle, etc.), fuel system different, the M104 cruise-control is completely different, wiring shut-off solenoid, throttle linkage from a 603 car, inner-firewall, exhaust, instrument cluster, ECU to control idle, .970 glow-plug relay/wiring, ... it needs to all work and look factory. I thought it'd be easy.
It'd be fairly easy if I wasn't worried about Cruise and A/C.
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Gone to the dark side - Jeff |
#12
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Oh...you're doing much, much more then a simple tensioner upgrade!
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#13
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Yes sorry, it's a modified OM603 turbodiesel in a late-'95 E320.
Hobby cars can consume you.
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Gone to the dark side - Jeff |
#14
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Really old thread but has anyone actually done this?
I have a similar story, I have a 3.0L M103 to put into my 190E Sportline and for the sake of my sanity I want to put in the updated tensioner. I found a C280 in the yard that has the updated brackets and all, plus I have an AC hose crimper that'll allow me to customize the lines. The compressor on the 3.0L is shot and the compressor on my M103 is close to death and I don't have any compressors with less than 180K on them so I was thinking of buying a new compressor anyway as they are a pain to change in the car. Since a new Denso is $225, it's really not too bad cost wise. I'll spend about $70 or so on the brackets and hoses, new tensioner and pulley is about the same price as a new Febi tensioner which is a PITA to use and has already failed on me in less than a year.
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Current: 1975 450SEL, 83 300D, 88 Yugo GVX, 90 300D OM603 swap, 91 F150 4.6 4v swap, 93 190E Sportline LE 3.0L M104 swap, 93 190E Sportline LE Megasquirt, 03 Sprinter, 06 E500 4Matic wagon. |
#15
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I've done it on my wagon. I just used my old compressor with a hack at the rear bolt.
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90 300TE 4-M Turbo 103, T3/T04E 50 trim T04B cover .60 AR Stage 3 turbine .63 AR A2W I/C, 40 LB/HR MS2E, 60-2 Direct Coil Control 3" Exh, AEM W/B O2 Underdrive Alt. and P/S Pulleys, Vented Rear Discs, .034 Booster. 3.07 diffs 1st Gear Start 90 300CE 104.980 Milled & ported head, 10.3:1 compression 197° intake cam w/20° advancer Tuned CIS ECU 4° ignition advance PCS TCM2000, built 722.6 600W networked suction fan Sportline sway bars V8 rear subframe, Quaife ATB 3.06 diff |
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