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Old 04-27-2003, 10:04 PM
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Join Date: Dec 2002
Location: Fairfax, VA
Posts: 520

In what model year did the 300CE get the 4 valve head? Did the variable valve timing modification occur simultaneously, or with another model year?

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Old 04-27-2003, 10:30 PM
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Join Date: Sep 2002
Posts: 2,656
If I remember correctly, 1990. All 104's have an advance mechanism on the intake camshaft.
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Old 04-27-2003, 10:58 PM
Join Date: Dec 2001
Location: Southern California, U.S.A.
Posts: 8,538
I may be wrong, but the early 3.0 liter M104 used on the 300CE from 1990-1992 did not have variable valve timing on the intake cam. It also still used CIS-E fuel ignition.

The 1993 300CE was the first coupe to get the 3.2 liter M104 engine.
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 04-28-2003, 02:19 AM
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Join Date: Jul 2000
Location: Seattle WA USA
Posts: 469
I think all the M104 engines, including the '90-92 CIS-E models, had the dynamically adjustable intake cam timing, not just the '93 and later HFM-SFI management systems. But I've been wrong before.
1992 300CE Sportline Sophie
1990 300E Emma - in the family
1979 240D Josephine - sold, but not forgotten
2004 Pacifica AWD
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Old 04-28-2003, 06:44 AM
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Join Date: Jan 2002
Location: England
Posts: 1,841
Paul is almost always right.

But, today, I believe Steve is right.

I posted a thread on 300-24 vs 320, apparently, good though 24v 3.0 is compared to the old 12v, the 320 (all 24v) is the one to have if possible - even better torque curve, and less peaky.

2.5-16v 1990 90,000m Astral Silver
2.0E 8v 1986 107,000m Black 2nd owner
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