Clatter on hard acceleration; 61 220SEb 4 spd - Mercedes-Benz Forum

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post #1 of 6 (permalink) Old 11-11-2013, 10:38 AM Thread Starter
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Date registered: Aug 2010
Vehicle: 1961 220SEb coupe, 75 450SL, 79 450SL
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Clatter on hard acceleration; 61 220SEb 4 spd

I have a 61 220SEb coupe, 4 speed. When accelerating, usually when pushing it, but rarely on easy acceleration, there is a clatter / knocking that seems to be in the area of the shifter. I have not replaced the rubber carrier for the center bearing in the drive-shaft yet. Shifter itself is rebuilt, and new bushings installed at the link points. Thoughts?
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post #2 of 6 (permalink) Old 11-11-2013, 02:36 PM
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Could the clatter be coming from the engine itself?

I'd look to the exhaust and see if you have something bumbling on the chassis. At hard acceleration, your engine may be leaning over a little (meaning degraded/bad engine mounts) causing the exhaust to bump.
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post #3 of 6 (permalink) Old 11-11-2013, 03:02 PM
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Date registered: Jan 2007
Vehicle: 1962 W111 220SE Coupe
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I'm thinking worn engine mounts or tranny mount, either could allow enough movement for parts to potentially make contact. Check your emergency brake cable as well and be sure it is properly routed along the rollers and is tightened properly with no slack. While you're down there make sure your rubber exhaust hangars are all in place and not torn either. Sometimes they look ok but are hiding a split so grab each one and make sure it's not compromised. How's your flex disc? If it's coming apart it would open up more under greater RPMs and threads or a loose bit could be making contact. You can also put it on a lift and look for any signs of rubbing such as shiny parts on the exhaust or chassis, worn rubber, etc.


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post #4 of 6 (permalink) Old 11-11-2013, 04:46 PM
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check the 6 bolts at the u disc at trans , and rear mount .
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post #5 of 6 (permalink) Old 01-04-2015, 07:30 PM
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Date registered: Jan 2015
Vehicle: 1965 220 seb coupe
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that looks like a later engine than a 220 se, it has the 6 plunger injection pump which makes it a 250 or 280 engine, which is a nice upgrade if the original motor is lost.

there is a diagram on this page, but it doesn't explain how to overcome the 'spring'

Behind the wheel

love the car by the way, right on top of my car bucket list, but pretty much unobtainable in Australia these days except for those with plenty of cash!! (more than me anyhow)

All the best
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post #6 of 6 (permalink) Old 01-11-2015, 07:17 AM
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Front Flex coupling collapsing or cracked,also retighten loose bolts ,all checks as mentioned by agillot.
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