Author Topic: m110 oil leak  (Read 426 times)

ricky doc

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  • W116 Enthusiast
  • Location: england
m110 oil leak
« on: 18 August 2018, 02:31 AM »
Hi I have a 1984 280SL r107 with the m110 engine have got small oil leak on the cylinder head between the two front inspection covers. How can I fix this.
Cheers Ricky

rumb

  • W116 Addict
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  • Posts: 1,273
  • MB Enthusiast
  • Location: Fort Collins, Colorado
Re: m110 oil leak
« Reply #1 on: 18 August 2018, 05:32 AM »
Hello Ricky,
Even though this forum is for W116 chassis, your still in luck as that model includes the M110 engine.  The cylinder head on it has 3 layers and has a valve cover gasket and a camshaft housing gasket. The small covers also have gaskets that could be leaking.

You need to examine how many miles are on your engine and whether a full head rebuild is justified or just replace the middle gaskets.
That engine is prone to head warpage if overheated, complicating things.

I suggest the R107 forum on Benzworld. https://www.benzworld.org/forums/r-c107-sl-slc-class/

https://www.benzworld.org/forums/r-c107-sl-slc-class/1450550-encyclopaedia-germanica-volume-107-aka-egv107.html

here are pictures of a head being worked on
https://demain.smugmug.com/Cars/The-rebuild/i-rfHHMdk

Good luck with your project.
'68 250S, '77 6.9 euro, '91 300SE, '98 SL500 '14 CLS550

ricky doc

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  • W116 Enthusiast
  • Location: england
Re: m110 oil leak
« Reply #2 on: 20 August 2018, 01:21 AM »
thank you for ur advice and help Rumb