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#2
10-29-2003, 09:49 AM
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A Mercedeshop koan: What is the sound of one chain slapping?
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1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13 
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#3
10-29-2003, 09:55 AM
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I've never heard one on any MB. Working at Wal-Mart lube, I have seen a few cars come through with odd sounds. Some sound like a roller coaster's safty ratchet going up the frist hill, a long light chain dragging on the ground at 20mph, and like a risty bicycle with no chain oil.
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#4
10-29-2003, 10:55 AM
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I ask because, at highway speeds SWMBO's 300D has more of what I would label as 'top end' noise than my TD...don't you only hear chain slap at low speed?
It's kind of a whirring sound that, in my mind, sounds like a chain meshing. It's faintly reminiscent of the noise that my old Honda 600 car made when it was eating a timing chain. Nevertheless, they both sound the same at idle...well, except for the rattle caused by the broken air cleaner mounts on the sedan.
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Never a dull moment at Berry Hill Farm.
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#5
10-29-2003, 01:45 PM
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Maybe it's about time to adjust the valves.... good excuse to get in there and take a look at things anyway.
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1985 300D Turbo ~225k 2000 F350 (Powerstroke) 4X4, SWB, CC, SRW, 6spd ~148k 1999 International 4900, DT466e (250hp/660 ft/lbs), Allison MD3060 ~73k
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#6
10-29-2003, 02:13 PM
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A valve adjustment was done about 2500 miles ago. At the time, I documented about 6° of elongation but the car runs so doggone well I decided not use an offset key to bring it back to spec.
I'll think I'll open it anyway and check things out.
__________________
Never a dull moment at Berry Hill Farm.
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#7
10-29-2003, 02:17 PM
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I wasn't sure if that was the one you put the offset key in or not. Hopefully the sound isn't some big deal but I think it's better to check it than to just let it slide.
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1985 300D Turbo ~225k 2000 F350 (Powerstroke) 4X4, SWB, CC, SRW, 6spd ~148k 1999 International 4900, DT466e (250hp/660 ft/lbs), Allison MD3060 ~73k
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#9
10-31-2003, 03:19 PM
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It sounds like...money
.
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#10
11-03-2003, 04:39 PM
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I went to an indy today to let him listen to the 'noise.'
I opened up the top-end last night and went through, checking all the valve clearances and inspecting the guides for wear. I found an intake and an exhaust that were loose; adjusted them and it took out the intermittent tick I was also hearing but did nothing for the whirring at 1800-2500rpm.
So, I went to an indy today to let them listen to Lilly's 'noise.' Consensus is that I probably have slightly excessive valve clearance...this makes perfect sense to me because I use the 'closest' inch measurement feeler leaf instead of the exact metric leaf. Consequently, my valves are a shade on the'loose' side of things. Chris says that it won't hurt anything but when they are loose you'll get that whirring noise. I believe I'll invest in a pair of gin-yoo-wine feeler leaves of the proper metric thicknesses before the next session with these valves.
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Never a dull moment at Berry Hill Farm. Last edited by R Leo; 11-03-2003 at 04:46 PM.
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