fuzyfrog 0 Report post Posted August 27, 2009 Oh god yes Manhart Racing may have just the thing for you. The German tuning firm has shoehorned that same 500-hp, 5.0-liter DOHC 40-valve V10 – known in Bavaria as the SB85B50 – into the BMW Z4. The mod job wasn't finished with the engine swap, however. Manhart also switched the transmission and differential, installed an AC Schnitzer exhaust, HJS cats and in the process just happened to have disabled the electronic speed limiter. The resultant 550 hp output in a 1450-kg package gives the ten-cylinder roadster a power-to-weight ratio of 2.6kg per HP, which places it firmly in supercar territory. (The flyweight Ferrari 430 Scuderia, for reference, packs 2.45 kg/hp.) 0-60 comes in a claimed 3.9 seconds, and we have little reason to doubt it. That is, assuming you can get all that power down through the upgraded 285/30ZR19 rear tires and keep it in a straight line with the 235/35ZR19 mounted on blacked-out BBS Challenge rims. We just hope they've upgraded the brakes to go along with the extra power. Link http://www.autoblog.com/2009/08/27/manhart...he-z4-roadster/ Quote Share this post Link to post Share on other sites
Forrest 35 Report post Posted August 27, 2009 Understeer? Wonder how heavy those motors are. Quote Share this post Link to post Share on other sites
mark247 39 Report post Posted August 27, 2009 (edited) S85b50 is 240kg, heavy. To compare M20 = 258lbs 117kg M50 = 299lbs 136kg S50 = 335lbs 152kg Edited August 27, 2009 by Mark247 Quote Share this post Link to post Share on other sites
