[W126 Coupe] Lumpy cam

[Jonathan Hodgman]

Quite..these cams have hardly any overlap...they can and most often do idle
Smooooth!

Now my mechanical lifter conversion and Very hot cam...that has some lump to
it But it's still making power at 67/6800 RPM:)

Jonathan


On Sun, Aug 31, 2008 at 8:47 AM, Day . Ralph <RDay at drc.com> wrote:


>  Myth, mine (1991) idles smooth as can be.  I have had to replace the idle

> speed control valve.

>

>

>

> *Ralph D. Day*

>

> Senior Program Manager/ASQ LSS Certified Black Belt

>

> Dynamics Research Corporation

>

> (703) 553-6852 (office)

>

> (301) 275-9030 (cell)

>

>

>

> *From:* mbcoupes-bounces at mbcoupes.com [mailto:

> mbcoupes-bounces at mbcoupes.com] *On Behalf Of *Marcus Johnson

> *Sent:* Sunday, August 31, 2008 8:45 AM

> *To:* mbcoupes

> *Subject:* [W126 Coupe] Lumpy cam

>

>

>

> Hi all,

>

>

>

> I was speaking to a guy about the cams in a 560 motor and his information

> from an older mechanic was that the MB engineers has specified them to be a

> little 'lumpy' due to the longer stroke of the motor.

>

>

>

> This was in reference to an idle problem I've been having.

>

>

>

> The theory was that you could never get a 560 motor to idle 100% smooth as

> a result.

>

>

>

> Urban myth? True? Utter rubbish?

>

>

>

>

>

> marcus

>

>

>

>

>

> marcus johnson

>

> 1989 560 SEC

>

> melbourne, australia

>

>

>

> The MB Coupes Website!

> W126 SEC Mailing List

> Postings remain property of MB Coupes, L.L.C.

>




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1996 S600 Euro "Scharnhorst"
1991 560 SEC Full Euro ECE
1991 560 SEC 226Hp/271ft/lbs:)
1989 560 SEC AMG (N.Amer 250/295)
1986 560 SEL AMG 6.0L 32V
1980 280 SE Euro
1978 300D TMU
1987 560 SEL 162K Midnight Blue on Gray RIP:(
2006 Z4 3.0Si M spec 6sp
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