Advice on gearbox conversion needed.
At last my 230GE has succesfully been converted into a six cylinder 300D.It goes a dream now and returns 320 miles on a full tank;25mpg and thats combined!Now my question is this, the gearbox is the original 4 speed manual but i was told a 5 speed diesel gearbox or automatic would give it better performance.Any acvice would be much welcomed!
Huss55,
I would have thought that the different revs of the petrol and diesel would have left your conversion undergeared=v slow, ie diesels run at lower rpm.
I understood that the petrol/diesel final drive ratios were different to compensate for this.
But if you are getting 25mpg you are doing very well/hardley over revving ?
Anyway having driven both the 4 and 5 speed diesel 460's I would recommend the 4 speed as being far far "sweeter", to change. The auto will use more fuel, others can advise there.
Marcus
Marcus,
I agree with that... just to say that the 5 speed manual gearbox fitted to the 463 is so much better than either the 4 or 5 speeders fitted to the 460. I would definitely try to get one of such gearboxes!
How many Zillion miles would be on them Hus ?, are they out of Knackered taxis by any chance ?
Marcus
PS=edit
Petrol / diesel ?
I "THINK" the different operating revs of the two different engines are sorted by the final drive ratio, ie at the differential,
ie the gearboxs may well be identical be they petrol or diesel ?
I know with commercial vehicles one can specify a low ratio "diff" if towing or other more adrous work, so I'm guessing the "G"'s are the same, it is the most cost effective way.
Marcus
Ha ha ha....! I thought the same with my engine but the north of cyprus has about 200,000 population so if you dont rush you can find out what belonged to who.
Well mortinson, it just so happens that there are a few 5 speed gearboxes out in north cyprus going for peanuts!They are however out of w124's,what would you say is better diesel or petrol versions?Cheers!
As Marcus said the gearbox is similar for the petrol and diesel versions. The 717.4 (5-speed gearbox) is precisely the one fitted to early 463 GWagens (with very small modifications) so it would be indeed the perfectt match for your OM603 engine.
A GWagen friend has recently replaced his manual gearbox and he tells his experiences here>
http://www.gwagen.de/html/english/gearbox.html
Cheers
Hi jesus,i also read klause's report on his gearbox conversion,which is why i thought i would ask you guys aswell for opinions.Well i will be on the phone to my brother who lives in north cyprus to be on the prowl for a 5 speed gearbox out of a 260/300E.Why petrol? well as marcus stated diesels are generally used more where as the petrol vehicles are more pampered with less mileage due to being more expensive to run.My 230GE CAB was owned by a top lawyers wife who used it only for the school run,which resulted in only sunburn being red and very hot in the summer,but very low miles and ZERO RUST. I would love to send pics once i learn how to,but she is an absolute beauty!!
Bear in mind though that the bellhousing on the petrol is likely to be different, ie starter motor possibly on opposite side.
thanks for advice mercfan,and like the moto you use!
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Well mortinson, it just so happens that there are a few 5 speed gearboxes out in north cyprus going for peanuts!They are however out of w124's,what would you say is better diesel or petrol versions?Cheers!