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  #31  
Old 04-25-2006, 07:44 PM
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Quote:
Originally Posted by Strife
I think there is a lot of potential in the ignition timing .
I've never found a lot of HP in ignition timing. You'll only go as far as 91 or 93 octane fuel will take you. Higher HP engines generally use an ignition "retard" feature for max top end HP.

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  #32  
Old 04-25-2006, 07:58 PM
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could it simply be that this car has more mileage than your coupe or that the previous owner did not take good care. Same cars driven by diff people and in diff conditions end up driving diferntly at the end...
The SEL's were never that fast in pickup. The lexus LS400 have much better pickup try that sometime and you'll know what i mean. I've driven both so
good luck either way.
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  #33  
Old 04-25-2006, 10:21 PM
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If the timing is wrong there is a lot of power to be found by setting it correctly.

Yes, having your timing retarded will generally reward you w/ better top end power..thus you use the ideal compromise seeing as these are street engines.

M117's (560's in particular) like 12-13 degrees initial timing as specified by the factory and even AMG seems to like that setting best. Take a US car to the dyno and pull the ignition resistor (giving you your full initial advance). If the rest of your engine is in proper running order you Will absolutely see HP gains. As for the 420 EZL, if I would be surprised if it runs more timing w/ the resistor pulled.. Next time I have a 420 in I’ll play w/ timing/resistors/EZL’s etc and see what I find.


As for comparing a lexus to an SEL, the lexus has a few advantages, one it automatically starts in first gear.. engaging first in our cars changes the character dramatically. 2nd, I wouldn't be in the least bit surprised if the lexus had a steeper diff..a Lexus was never designed to run all day @ 120+ so more aggressive gearing makes absolute sense.

As for how a car is driven, if you maintain a Mercedes properly the car will make good power for a long, long time.

Jonathan
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  #34  
Old 03-05-2008, 05:04 PM
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Quote:
Originally Posted by jhodg5ck View Post
the Only cheap means of getting more power from your car (once everything is in proper order) is replace the spring loaded portion of the throttle linkage w/ a solid bit, remove the ignition reference resistor (takes initial timing from 3 to 12 degrees initial) and drop in a K&N (I find the 560's a bit starved for air on the dyno).

After that it gets expensive, i.e. exhaust, cams, head work, forced induction etc, etc...

Jonathan
I know this is an old thread, but on the throttle spring, do I replace that with one of the rods like the rest of the linkage? What is the benefit?
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  #35  
Old 03-05-2008, 07:22 PM
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Originally Posted by E150GT View Post
I know this is an old thread, but on the throttle spring, do I replace that with one of the rods like the rest of the linkage? What is the benefit?

Similar, if you need the part let me know.

Benefit is Full Throttle!

Jonathan
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  #36  
Old 03-06-2008, 01:29 PM
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As far as the ignition timing goes, the sticker in the car states 12 degrees advance stock. Mine is at 17 degrees, so would I be gaining power or losing it at 17 degrees advance?
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  #37  
Old 03-06-2008, 09:55 PM
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@ 17 degrees initial you'll be losing power..you should bring the RPM's up to 3500 or so and see what you're getting for total advance.

I'm feel a lot better w/ 11-13 initial.

Jonathan
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Jonathan Hodgman
http://www.blueridgemb.com/
Enthusiast Service, Restoration & Tuning.
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Located in the Atlanta area
Specializing in all pre and post merger AMG's including Hammers and DOHC M117 engines.
Mercedes Repair Atlanta
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  #38  
Old 03-11-2008, 01:30 PM
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Jonathan,
I am intersted in the part. I sent a PM, but I suppose you didn't get it. Let me know how and how much please. Thanks

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