[W126 Coupe] Metallic Noise

[Shayegan, Richard]

I guess the mechanic ruled out valve slap? But what about loose pistons?
Richard


________________________________

	From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of kashella at comcast.net
	Sent: Friday, December 08, 2006 11:14 PM
	To: MB Coupes
	Subject: [W126 Coupe] Metallic Noise
	
	
	Dear fellow SEC enthusiasts:
	 
	My 1983 SEC model that has been re-engined with an 85 engine
(Engine was simply obtained from a used source, it was not a rebuilt
engine) is making a metallic tapping sound coming from the passenger
side bank.  Seems to be coming from valve area.  My mechanic checked the
valve lifters, shims and clearances and all seems to be in spec.  
	 
	The sound is a metallic rapping sound that changes with speed of
engine.
	 
	Does anyone have any other ideas as to what it could be?
	 
	When I had the used engine installed, I had the Mercedes dealer
replace the timing chain guides.
	 
	Greg Kashella
	kashella at comcast.net
	 
	 

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