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Old 06-17-2002, 09:45 PM
Registered User
Join Date: May 2000
Posts: 317
Thumbs down Price of a cam

Can someone please tell the price of a cam for a 86 300E. From fastlane I'm gathering that I will have to change the rockers cam gear adaptor bolt, etc.

So what I'm looking at (IF my cam is worn is a minimum of $700-)just to change the DAMN CAM!!!

Or am I reading something wrong. OH PLEASE OH PLEASE OH PLEASE..

ANyone care to tell me the signs of a worn cam..
1986 300E
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Old 06-18-2002, 02:56 AM
Registered User
Join Date: Apr 2002
Posts: 3,469
Why do you need a cam? Cams almost never wear out on benzes. Not even the crappy 3.8 with one timing chain. Unless you didnt keep it full with oil. =)

Whats the problem?

No Benzes in the stable at the moment, but itching for one again.

Former Mercedes in the Stable:
1983 300CD Turbo diesel 515k mi sold
1984 300CD Turbo Diesel 150 k mi sold
1982 300D Turbo Diesel 225 sold
1987 300D Turbo Diesel 255k mi sold
1988 300 CE AMG Hammer 15k mi sold
1986 300E Amg Hammer 88k mi sold
1992 500E 156k mi sold
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Old 06-18-2002, 12:42 PM
Posts: n/a
On the early 560s, (117.968) the cams were made of a softer alloy and the lobes tended to wear prematurely. I think this was remedied in the late '80s.

Anyhow... a constant clacking can be indicitive of cam wear or rocker arms problems. You'll have to inspect the cams to get a better idea, or perhaps you can use a piece of hose (like a stethoscope) and try to islolate any noise -- that is if there is any(?)

I'm dealing with this problem right now and hoping it's the rockers, but my brake job takes precedent at this point.
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Old 06-18-2002, 12:48 PM
Join Date: Dec 2001
Location: Southern California, U.S.A.
Posts: 8,503
I've also been told by my mechanic that the right cam on the 4.5 liter V8's is also prone to cam lobe wear.
Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
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Old 06-18-2002, 05:37 PM
Registered User
Join Date: May 2000
Posts: 317
might have over reacted

I might have jumped the gun on the cam issue. The problem was, I just did the head over guides, seals, gasket, etc. I noticed after a few days there was a tapping noise and a really rough idle. Everything was torqued to specs but still I had this TAP TAP TAP. I remembered that I pulled the resistor(this does retard the timing right?), well I put it back in lastnight and this morning after driving for a bit no more tap. I don't want to jinx myself so I'm going to wait a few days of driving to see if the tapping is gone or not. I did pull the resistor as soon as I finished the head work. I don't know if this has any bearing but, the car's idle is a whole hell of alot smoother and no more tapping. I'll let you know where I stand in a few days.
1986 300E
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