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#16
11-12-2004, 04:25 PM
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Quote:
__________________
Proud owner of .... 1971 280SE W108 1979 300SD W116 1983 300D W123 1975 Ironhead Sportster chopper 1987 GMC 3/4 ton 4X4 Diesel 1989 Honda Civic (Heavily modified) --------------------- Section 609 MVAC Certified --------------------- "He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche 
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#17
11-12-2004, 07:41 PM
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Quote:
Doh................off by a factor of 10.  The correct cold numbers are: intake 0.1 mm, exhaust 0.35 mm. Last edited by whunter; 02-18-2007 at 05:27 PM.
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#18
11-12-2004, 07:45 PM
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yes that thing woudl clatter up a storm if you managed to get it to start with those valve specs.....
__________________
Proud owner of .... 1971 280SE W108 1979 300SD W116 1983 300D W123 1975 Ironhead Sportster chopper 1987 GMC 3/4 ton 4X4 Diesel 1989 Honda Civic (Heavily modified) --------------------- Section 609 MVAC Certified --------------------- "He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche
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#19
11-12-2004, 08:08 PM
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C'mon. I was only off by an order of magnitude.
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#20
11-12-2004, 08:17 PM
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ccllaattteeccllaattteccllaatttteeccllaattteeccllaatteeeccllaattteeecclaatttee 
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#21
11-12-2004, 10:42 PM
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I may be a newbie of sorts with MB's but I don't understand how much different it would be to check the valve lap between the valve and lifter or between the lifter and cam lobe. On most non OHC engines you check it between the valve and the rocker arm.
Please enlighten? Stephen
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85 300D 305K miles WVO(105K so far), Mine 82 300SD 235K miles BIO-D, Wifes 96 F250 SC PSD 4X4 285K MILES BIO-D, Ours 89 BRONCO 182K MILES sold Finally Compression Ignition Only!
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#22
11-13-2004, 02:38 AM
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Moment arm of lever = gap variation..
Quote:
A .1mm gap in the blue area will = .05mm in the green area. The drawing is exaggerated for effect. Follow the correct OEM procedure for your car... Note: Valve lap is between valve face and seat. You where talking about valve LASH = adjustment.
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ASE Master Mechanic https://whunter.carrd.co/ Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 2003 Volvo V70 https://www.boldegoist.com/ Last edited by whunter; 10-25-2011 at 06:21 PM.
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#23
11-13-2004, 10:58 AM
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I consider adjusting the valves every 15,000 miles too often. Maybe it was necessary when the engines were new but not on the older ones we have.
I checked valve clearance after 25,000 miles on my 617 engine and not one valve required adjustment. All clearanes were within spec. Also, I never had any problem using 2 regular open end wrenches to adjust the valve clearance. When the valve cover is off the cam timing, chain elongation and chain tensioner should be checked. P E H
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#24
11-13-2004, 11:38 AM
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WHUNTER,
Point well taken, I dont know how I missed that. Tooo many things to learn and accomplish all at once on these cars I guess. Stephen
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85 300D 305K miles WVO(105K so far), Mine 82 300SD 235K miles BIO-D, Wifes 96 F250 SC PSD 4X4 285K MILES BIO-D, Ours 89 BRONCO 182K MILES sold Finally Compression Ignition Only!
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#25
12-29-2004, 11:06 PM
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Bump for new members and a friendly reminder for current members.
__________________
Adam Lumsden (83) 300D Vice-President of the MBCA International Stars Section
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#26
12-29-2004, 11:17 PM
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Honestly, for me it seems easier with a straight wrench than the Hazets, but I started on Triumphs and Jeeps in the 60's (we had a Willy's overland as a kid and as the youngest, I was always the one lifted into the eng compartment to do the adjustment) and have been finding easier ways to do things ever since.
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1984 300D Turbo - 4-speed manual conversion, mid-level resto 1983 300D - parts car 1979 300TD Auto - Parts car. 1985 300D Auto - Wrecked/Parts. ========================= "If you don't know where you are going, any road will get you there". Lewis Carrol
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#27
01-04-2005, 09:45 AM
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Just did my first valve adjustment ('82 300D)...
Though this thread has wandered a bit, I think it's very worthwhile so I'll post my results.
All of my valves were tight except for one, and a couple of intake valves were VERY tight. The turbo lag didn't seem as bad after the adjustment. I assume that those two valves weren't closing all the way, allowing compression in the cylinder to work against the pressure from the turbo. If that's the case, I'm lucky I didn't burn a valve! The engine also starts faster and idles more smoothly. As for the wrenches, I used a set of Unimog wrenches from Samstag, which costs $40-something dollars. They are just like the regular wrenches except they have shorter handles. Apparently, this is necessary for working in the confines of the Unimog's engine compartment. I found that they had plenty enough leverage, and I imagine that the longer wrenches would be more cumbersome to work with. The short handles allow you to turn both wrenches with one hand, allowing you to hold the feeler guage with the other. The large wrench that holds the bottom nut didn't come with the set, but I was lucky and didn't need it. As for wether the wrenches are needed or not, I could have done the job without them. But I'm really glad that I bought them, because they really made the job quick and easy. With regular wrenches, I would have had a fight on my hands!
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1982 300D, black w/ palomino leather, 203K 2001 E320, champagne, 105K (Mom's) 1999 Dodge Dakota, squeaky & battered, 142K Last edited by Cateaux; 01-04-2005 at 09:54 AM.
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#28
01-04-2005, 09:57 AM
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Quote:
__________________
Proud owner of .... 1971 280SE W108 1979 300SD W116 1983 300D W123 1975 Ironhead Sportster chopper 1987 GMC 3/4 ton 4X4 Diesel 1989 Honda Civic (Heavily modified) --------------------- Section 609 MVAC Certified --------------------- "He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche
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#29
01-04-2005, 01:16 PM
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for us newbie's. What does "Bump" mean?
Great information here... so much to learn... so little time in a day...and some more tools to add to my get list... I've seen "Bump" used in a few threads here... what does it mean?
Les
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1980 300sd - Ivory, Tobacco Interior 130,000 miles 2003 Expedition Where a calculator on the ENIAC is equipped with 18,000 vacuum tubes and weighs 30 tons, computers in the future may have only 1,000 vacuum tubes and weigh only 1.5 tons. - Popular Mechanics, 1949
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#30
01-04-2005, 01:28 PM
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Quote:
You can choose any word, or combination. Somehow, "bump" has become the quasi-standard.
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