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Feb 29, 2012 13:29:53 GMT
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Hi all,
Does anyone know if you can upgrade the automatic 4 speed gearbox on a Mercedes 230E/W123, and if so, how easy and which gearbox could be used? I use my Merc every day, and suffer from empty wallet syndrome. Anything to boost the MPG would be useful.
The 4 speed box in there revs at about 3.5k at 60mph, so the fuel guage tends to move faster than the rev counter.
No I don't drive fast!
Any ideas welcome.
Thanks
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Last Edit: Feb 29, 2012 13:35:41 GMT by slat4090
1991 Astra Merit,
1987 Nova Merit,
1996 Audi A4 Avant,
2001 Vauxhall Vectra 2.2CDTi,
1996 Ford Escort (Auto),
1989 VW Golf Mk2 GL4+E,
1991 VW Golf Mk2 GTI,
1982 MB W123 230E,
1995 Ford Fiesta Frascati.
No car due to changing jobs, but looking for a project!
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Feb 29, 2012 21:42:23 GMT
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mine is Auto, or do you mean they came with a 5 speed auto box?
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1991 Astra Merit,
1987 Nova Merit,
1996 Audi A4 Avant,
2001 Vauxhall Vectra 2.2CDTi,
1996 Ford Escort (Auto),
1989 VW Golf Mk2 GL4+E,
1991 VW Golf Mk2 GTI,
1982 MB W123 230E,
1995 Ford Fiesta Frascati.
No car due to changing jobs, but looking for a project!
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No, no 5-speed auto. The only 5-speed was a manual. So either convert to a manual 5-speed, or maybe put a taller back axle in - that would make accelerating hard work though.
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hkr91
South East
Posts: 562
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My grandad used to have a 5 speed manual w123 200 in beige - big ends knocked at about 88k!
Not seen them with a 5 speed auto though
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The 5 speed auto (available from the late W124 on, about 1992 or 1993 IIRC) is noit a 'real' 5 speed box, it's more like a 4 speed with an electronically controlled & engaged overdrive as 5th. At a guess, I'm sure you couldget it in there and get it runing - justdependson howfar you'r willing to go. Custom mounts, custom prop shaft, faffing with electronics, etc. (that 'box needs a speed signal p.e.)... In the end a manual 5-speed will require similar amountsof work, if converting a auto car to manual 5 speed (pedals, gearbox mount and different prop shaft etc. and more) - but these parts are available 2nd hand... Longer diff is an option too  But will lose flexibility and decrease acceleration... (and need an appropriate speedo to that diff)... |
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As above really.
If your not too bothered about ultimate acceleration then another rear diff would be soooo much easier than gearbox/pedal box/ cables/ linkages etc. At 60mph my car sits around 1,500 rpm and has no problem at all with acceleration. Its just not as quick as some thats all.
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Thats an idea. Any recommendations for a donor Diff? Not worried about speed, cruising to work is fun!
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1991 Astra Merit,
1987 Nova Merit,
1996 Audi A4 Avant,
2001 Vauxhall Vectra 2.2CDTi,
1996 Ford Escort (Auto),
1989 VW Golf Mk2 GL4+E,
1991 VW Golf Mk2 GTI,
1982 MB W123 230E,
1995 Ford Fiesta Frascati.
No car due to changing jobs, but looking for a project!
|
|
But will lose flexibility and decrease acceleration... (and need an appropriate speedo to that diff)...