- Motorsport Gearbox weight approximately 80 pounds. BMW AG E46 M3 6 speed manual street car gearbox weighs 101.4 pounds & street car SMG gearbox weighs 105.5 pounds. MOTORSPORT GEARBOX COST: $18,788.31.All prices subject to change based on international currency foreign exchange rates.
- The SMG was essentially the automatic version and was the predecessor to BMW’s current dual-clutch gearbox. It used a single, automatic clutch to swap cogs and shifted incredibly quickly.
The E46 M3 had a couple major issues, one of the lesser ones is the SMG gearbox. The hydraulic pump often fails resulting in a costly repair. If this happens to a car you own it often make sense to convert the car to a manual rather than fix the SMG unit. SMG stands for Sequential Manual Gearbox. It's essentially a transmission capable of functioning as an automatic, or functioning as a manual transmission. The innovation is that, when functioning as an automatic, the driver does not need to operate a clutch pedal, simply designate desired gear.
Bmw Smg Gearbox
by Greg Wilson
The Sequential M Gearbox is essentially a six-speed manual gearbox where the clutch and gearbox are operated electro-hydraulically by a computer in response to the driver pulling on two paddles behind the steering wheel, or by pushing a floor shifter forwards or backwards. There is no clutch pedal. As well, the SMG is capable of operating completely automatically if desired.
Die-hard manual transmission enthusiasts may find it hard to believe that an electronically-controlled transmission without a clutch pedal could be more satisfying than a traditional manual gearbox. I’m not going to say that it is better than a traditional manual gearbox, but there are some advantages which make it possible to drive the M3 more smoothly and safely at higher speeds, and add an element of excitement that wasn’t there before.
First, note that the SMG system is not an automatic transmission than can be shifted manually - like BMW’s Steptronic or Porsche’s Tiptronic - it is a manual transmission with a clutch, but without a clutch pedal, that can change gears by itself in response to driver input. BMW developed the SMG in close collaboration with Getrag and Sachs, and uses a similar technology in the Williams BMW Formula One racing cars.
After you get into the car, you’ll see a small orange LCD display in the instrument cluster that tells you what gear, or mode you are in. ‘R’ is for Reverse, ‘0′ is for neutral, ‘A’ is for automatic, and ‘S’ is for sequential. This display is not only small, but confusing because the automatic mode includes an ‘A’ and an ‘S’ symbol, while the sequential/manual mode has an ‘A’ symbol in a different font type. As well, I’m not sure why ‘0′ stands for Neutral. It took me a while to figure out what mode I was in.
The system also includes a ‘DriveLogic’ button just behind the gear lever that allows the driver to adjust the speed of shifts and the shift points using six different settings.
To start the M3 SMG, your foot must be on the brake and the shift lever in ‘0′ mode while the ignition is on. Turn the key, and the 333 horsepower inline 3.2 litre six cylinder engine roars to life, emitting a dull rumble from the M3’s quad tailpipes. The SMG can be changed between manual and automatic modes any time while the car is running simply by tapping the floor gear lever to the right. Tapping to the left will put it into Neutral.
Smg Gearbox
Just behind the steering wheel are two large, flat ‘paddles’ which can be reached with your fingertips while holding the steering wheel in the ‘9 and 3′ or ‘10 and 2′ positions. To shift up, the driver pulls on the right ‘+’ paddle, and to shift down, the driver tugs on the left (-) paddle. Alternatively, the driver can shift up by pulling back on the floor gear lever, or change down gears by pushing forwards. (This is the opposite direction to that of some semi-automatic transmissions.)
Bmw Smg Gearbox Explained
The SMG DriveLogic system has six settings: the lowest setting starts the car off in second gear, shifts sooner, and goes into sixth gear more readily to save fuel - the highest setting starts off in first gear, revs the engine higher before shifting, and tends to stay in lower gears to keep the engine revving faster for more responsiveness. It’s also more aggressive when downshifting.
Race car transmission
BMW Race Engines: S50B32-34, P54B32-4, P60B40
(Warning must be stated this is the maximum allowed gearbox for mechanical integrity pound feet of torque when paired to the uber powerful BMW P60B40 v8 engine. Engines that produce 360 to 600 ft lb of torque require the Motorsport GTR gearbox. The manufacturer would not be happy to push the GT team PTG gearbox anymore than that of the existing in-line six race engine PTG figures. It is advised to utilize the GTR gearbox rated at 600 lb ft of torque when needed.)
(NOTE) Team PTG Stroked the BMW Race Engine to a 3.4 liter for additional horsepower gains from the broad range of in-line six cylinder engines that produced 400HP to 465HP.
Now available the original Motorsport sequential 6 speed manual transmission used by BMW NA Race Team PTG M3 ALMS race cars. Motorsport Gearbox weight approximately 80 pounds. BMW AG E46 M3 6 speed manual street car gearbox weighs 101.4 pounds & street car SMG gearbox weighs 105.5 pounds.
MOTORSPORT GEARBOX COST: $18,788.31
*All prices subject to change based on international currency foreign exchange rates.
Contact:PitCrew@ScottsdaleMotorsport.com