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#1
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'91 350sdl crankshaft
The connecting rod journal on crankshaft measures 1.889".
Bearing cups are stamped 603 3510 and 601 4511. MB parts tell me they can't x-ss ref the above. Can someone please post the crank specs, please?. |
#2
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Quote:
The bearing shells mentioned in FSM are Uppers = 603 08 10 or 603 15 10 Lowers = 601 04 11 or 601 08 11 and that on the 603.970 engine the upper shells are made of a different material than the lower shells due to "increased loads in engine" The upper shell's locating groove is 0.7 mm narrower to prevent misassembly. |
#3
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If only it were that simple to get bearings on that crank. Mercedes has 4 "standard sizes" of bearing shells that are color coded to identify what size they actually are. Don't be confused though, they also have under / over size bearings as well. The last one I rebuilt, I had to order the standard bearings +- 0 and then measure the clearances, and then order the proper color coded shells to match my clearances on individual cylinders..
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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 |
#4
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MB isn't the only manufacture to do it!! It was common with nitrated cranks b/c of the post treatment polishing. Sizing variation. I remember this with some chevys and hondas too.
Michael |
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