It was only a matter of time before one of those nutso German tuners decided to cram the biggest motor they could find into the most unlikely chassis. To be honest, what choice did they have? Virtually every other engine combination has tried, like the Hartge V8-powered 1-Series. You can’t just copy the other guy, you gotta stand out. And let me tell ya, this Z4M that’s been implanted with an M5-derived V10 stands out, for sure … as Manhart puts it, “now the fire of a 5.0 litre V10 engine with an impressive output of 550 HP blazes above the front axle of the Z4.” Would you be willing to be seen in a Z4 to drive this?
How did they get it to fit, you might ask? Well, they probably didn’t use sledgehammers like the boys at Sunbeam did back in the day with the Shelby-style Tiger roadster. But it wasn’t exactly a cinch: “The transplantation of the ten cylinder engine from the current M5 generation into the narrow engine bay of the roadster was anything but a walk in the park and it earned the Manhart Racing engineers quite a few grey hairs.” We can believe it, but was it worth it? The 3.9 second 0-62 MPH time is probably a good enough answer, as they clearly developed the car enough to not simply explode the rear tires every time the clutch was engaged. And the idea of being able to hear the V10’s siren growl while the wind whips the cabin sounds positively erotic. Good work, Manhart, you crazy sons of bitches.
Manhart Racing – BMW Z4 V10
HEART TRANSPLANT – 550 HP in Z4
The M version of the BMW Z4 is famously known by nature for being anything but underpowered, since the chassis of the sports convertible already has a heck of a lot of work with the 343 HP and the forward thrust in the lower gears could last forever.
As is generally known however, the sport oriented motorist can never have enough power at his command. Sufficient cause for Günther Manhart, who by now has over 25 years experience in rebuilding BMW engines – a first for Europe – to transplant a brand new, much stronger heart into the Z4. The transplantation of the ten cylinder engine from the current M5 generation into the narrow engine bay of the roadster was anything but a walk in the park and it earned the Manhart Racing engineers quite a few grey hairs. Nevertheless: everything fitted in the end and now the fire of a 5.0 litre V10 engine with an impressive output of 550 HP blazes above the front axle of the Z4. A catalytic converter, a modified DME electronic control unit and the removal of the factory-set V-Max restriction up to 250 km/h are part of the rebuild. Consistent to the M5 V10 engine Manhart Racing has treated the Z4 to an original M5 E60 6 gear manual transmission which includes a Fichtel & Sachs clutch and a M5 E60 differential. An AC Schnitzer stainless steel exhaust system with four muffler tips which was fitted with HJS racing catalytic converters caters for a perfect V10 sound at the rear.
The Manhart Z4 M V10 goes like hell and thanks to the perfectly tuned Bilstein B16 PSS10 coilovers, the virtually unrestrained power of 550 HP can be brought under control to the tarmac. Black BBS Challenge wheels rotate in the wheel arches of the Manhart Z4 M V10 with 8.5Jx19 ET35 235/35ZR19 front tyres and 10Jx19 ET20 285/30ZR19 back tyres.
Conclusion: 550 HP ten cylinders, an acceleration from 0 to 100 km/h in 3.9 seconds, kerb weight 1450kg, 2.6kg per HP… who could guess that these impressive figures belong to a Z4? Hardly anyone, however Manhart Racing turns dreams into reality and does this with 25 years experience.
[Source: World Car Fans]