Tråden om Martins G-wagen

[tHaWuLf]

Kom over en interessant greie om en person som har byttet fra vanlig 280 - motor til 280 - S motor som jeg har, og har kommet med erfaringene:

http://www.clubgwagen.com/classifieds/crossner.pdf

"At about 101,000 miles (in 2001), I decided that it needed a little more power – I take my boat up to the Thousand Islands almost every summer, and sometimes to Maine instead, for vacation and there were too many places, climbing the Adirondacks’ highways or those in New England, where the original 150 hp engine just didn’t have the guts to pull the boat well. So I had a “long-block” custom built, to replace the original engine, by one of the two premier engine rebuilders of Mercedes Benz engines in the U.S., Metric Motors, Inc (go to http://www.mercedesengines.net and see what they do for exchanged long blocks) – the customizing was to rebuild it with the cam and higher-compression pistons of the “car” (280 SE) version of the same M110 twin-overhead cam engine.

But this made a startling transformation in performance. If you’ve ever test-driven a regular 280GE Automatic, you’ll know that it’s 0-60 mph is about 18 seconds – that’s slow! And I hope you’ve tried out other 280GE’s before you come to test drive mine, for comparison – you’ll see the difference: now, with about 180 hp (~20% more), it’s about 14 seconds, and it easily keeps up with traffic while pulling my boat.
And it’s just so much more a pleasure to drive with the extra power

And here’s the surprise: despite the more powerful engine, I also get better gas mileage (when not pulling my boat) and spend less money on fuel, too!
I believe – the difference having become immediately noticeable – that the reason for my improved mileage is almost entirely based on the automatic transmission’s excessive (with the old engine) downshifting, which is now minimized!
I used to find that to keep up with traffic on the secondary roads and (especially) highways, I’d need more “gas pedal” on the upgrades and this would cause the transmission to often downshift and stay in 3rd gear for long periods, obviously using more gas with the higher rpm. After all, with the streamlining of a brick, and over 5,000 lbs of weight pulled by only 150 hp, you have expect it to resort to lower gears whenever a little extra “oomph” is needed, which is often.
But now, with this peppier engine, I need less “pedal” to keep up even on uphill grades and it stays in high gear much more of the time, only resorting to low gear for shorter periods – and I believe that this is what has considerably lessened my fuel consumption.
I used to get, without towing the trailer (of course), about 14-15 mpg on the highway (at around 65 mph on my local roads), and now I can get about 18-19 mpg. Yes, even though a more powerful engine is supposed to use more fuel (even while a higher compression engine extracts more energy from fuel) – but in any case, this mileage improvement is what I’ve found, and I’m convinced that it’s mostly because the automatic shifting of its automatic transmission overrides other considerations"


Har ikke tenkt over at forskjellen kan være så stor som 4 sekunder 0-100. Skal teste ut hva min klarer på sine eldre dager, og se om jeg klarer 0-100 på 14 sek [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img]