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The results are in on our VRP1000 billet turbo upgrade for the M177 GT, C63, and C63s.
Our customer's 2015 C63s hit 910 RWHP / 837.1 RWTQ with a set of these bad boys installed!
The VRP1000 turbos boast large factory housings capable of a direct fit installation. Inside, it contains a large 55mm turbine wheel, 55mm inducer, and 74mm exducer to ensure maximum power gains in your M177 AMG engine.
Impressive numbers. I see this was done on an E40 blend, but no apparent use of meth injection. Are there any numbers with just straight 93 octane pump gas? I'd be interested to see what it was able to do on that with the HPFP and LPFP upgrades.
Curious to know if the transmission will hold this type of power or if this is going to require the clutch upgrade...
******Transmission is rated to 1000nm torque input but should be able to tolerate a bit more assuming the fluid is in *good* shape, with not too many miles on it, and the transmission is kept cool and not overheating from coolant or other cooling issues. All depends on how the car is driven and used. If the car is abused and basically beat on often, yes the transmission will probably fail after not a long time, or will need freshening up with better clutch plates, steels, and bands. A high mileage transmission that has not been serviced or maintained well, or that is already a bit sick will not last long at all with bigger mods.
*Anything* can and will break eventually. If the car has street tires and has issues with traction, the loss of traction kind of acts like a fuse of sorts and helps the transmission live longer. Better traction via more meat on tires, proper surface prep at a launching pad with VHT, etc... will put a lot more input stress on the transmission and it will probably fail earlier than on the street, on regular street tires typical as on these cars that just blow them off the rims due to traction loss. Other platforms that use traditional torque convertors need anti-ballooning plates and really nice furnace brazing, etc.. to keep them from grenading their fins internally and just destroying the rest of the transmission. A wet clutch system is a nice option, and if fed good and copious amounts of clean fluid should last a LOT longer.
There are *lots* of things that can be done to the 722,9 transmission to make it handle pretty much whatever you put in to it, but the failure point then becomes things not the transmission and something else once you start approaching 900-1000hp (flywheel).
"Hold this type of power?". Yea. "How long?" not long if you are hard on the car, race a lot, etc... Street driven car with regular tires at that power level will probably break something else first related to fueling, or leaning a cylinder out, detonation, etc... The higher the HP and Torque, the lower the margin before something breaks becomes. The C63s 4.0 motor is very overbuilt for its stock power level. The 722.9 transmission which I am somewhat familiar with is really really nice - I'm not that familiar with the newer 9 speed tranny and cannot comment, but assume it could be made to handle whatever as well but even stock was probably designed with some reserve to insure it doesn't just break at typical street HP and Torque bolt on mods folks put on their cars, within reason.
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
