Hello MBWorld,

I currently have a 2003 R230 SL55, I have modified it quite a bit regarding engine, exhaust, supercharger and so on. Now I'm looking for a new project and I really like the roadster MB's. Roadster and cabriolet at the same time.

I do like the R230 model, and have not really tested any R231. I guess the SL65 R231 is a bit to expensive and I'm wondering if the twin turbo M157 SL63 might be just as powerful with some mods (tune, exhaust etc). On the other hand the SL65 is the top model and I'm not going to buy a SL63 just to replace it in 2 years for a SL65... From what I have been reading the R231 should be a step up in overall handling and technique, but I do think the R230 is a bit more good looking however.

Can you guys pleas help me what to look for. I do like horsepower and I will try to improve the engine to some extent regardless.

Thanks,

/g

Get the 231 SL63 and do the Pure Turbo upgrade.

all the v12s have an inferior 7 speed gtronic. The v8 has the dct and makes the most difference in the performance and drivability than any other feature of the car. Not to mention the v12s are heavier more money, and less drivable of all the engines

The 5 speed is durable but the transmission is slow. The 7 speed with the V12 would be great.

Regarding the V12TT, is around 700 hp at the crank some sort of limit if not major (and very expensive) upgrades are done? There seme to be so much more "easy" options with the M157-engine?

I was under the impression that the 7-speed gearbox only was available in the R231 from 2012, is that right?

The 7 speed was in some NA 230's but not the forced fed versions.

The 63 is much more mod friendly and has so much more aftermarket support. With that said I've driven both and wouldn't part with my 65 for the 63. The only thing I'm envious of is the updated tech.

The R231 is not an option however, I would like to be under $100 000 and here in Europe that's impossible. So for me it's between the R231 SL63 and the R230 SL65 (facelifted model från 2008-2011 maybe).

EuphoriaDSM, what are the things you have done do your SL65 regarding engine upgrades? From what I remember you have done a tune, exhaust/downpipes, and some intake modifications?

Thanks.

Yes, home made intakes, intercoolers, turbo back straight pipe, waste gate rod adjustment and am now waiting to find time to put my meth kit on.

R230 SL65