MG9 high torque tr6060
MG9 high torque tr6060 Been considering a tr6060 swap into an 05 cts-v and have been specifically looking at the v2 tr6060 because of its improved shift rail design. After researching what I'll need to do for a transmission mount, I stumbled across this website which list the v2 cts-v and zl-1 transmissions as high torque applications with a transmission code of MG9.
http://www.brphotrods.com/products/T...etc/index.html
About all I can find about this setup is that the flywheel uses an 8 bolt flange instead of the more standard 6 bolt flange found on my ls6.
Anybody have anymore information on this?
Thanks
http://www.brphotrods.com/products/T...etc/index.html
About all I can find about this setup is that the flywheel uses an 8 bolt flange instead of the more standard 6 bolt flange found on my ls6.
Anybody have anymore information on this?
Thanks
I found this in a GM archive link found on google....is this any different than a standard tr6060?
2009 Tremec TR6060 (MH3/MG9) car transmission
2009 Model Year Summary
Tremec TR6060 six-speed manual car transmission
• New gear ratios
• Longer transmission inlet tube
• New input shaft (MG9)
• Trans pump added (MG9)
• High strength output shaft
• High strength rear housing (MG9)
• Additional roller bearing on mainshaft (MG9)
• Fixed constant velocity output flange (MG9)
• New inner rear extension seal (MH3)
• Integrated bell housing and adaptor plate (MG9)
FULL DESCRIPTION OF NEW AND UPDATED FEATURES
NEW GEAR RATIOS
A new close ratio set was introduced for the MH3 ratio. First gear is 2.29:1 while sixth gear is 0.68:1. The MG9 gear set is also new. First gear is 2.66:1 with a sixth gear ratio of 0.63:1. These new gear sets were created to ensure torque capacity as well as meeting program fuel economy and performance requirements.
LONGER TRANSMISSION INLET TUBE
The transmission pump inlet tube was increased in length by 115mm for all 2009 model year applications using a pump. This change improved the performance of the transmission cooling pump in high fore/aft and lateral accelerations.
NEW INPUT SHAFT (MG9)
The transmission input shaft spline was revised for assembly within the new Luk Dual mass flywheel. The input shaft tip journal length was increased to provide more overlap to the crankshaft pilot bearing inner race.
FLUID PUMP INTEGRATED INTO FRONT BELL HOUSING (MG9)
The fluid pump used on the higher-performance Z51 option and Z06 model is now integrated into the front case adaptor of the transmission housing. The re-design of the adaptor allowed it to be made stiffer, reducing flex and increasing durability. The new pump also has a significantly increased flow, aiding cooling during high-load conditions.
HIGH STRENGTH OUTPUT SHAFT
The output shaft is fabricated from SAE 8625 steel for improved strength. The shaft has revised grooves for stronger split washers and revised end diameter for tail shaft bearing support.
HIGH STRENGTH REAR HOUSING (MG9)
The rear housing is revised by adding internal and external ribs and relocating a solenoid to reduce stress and improve durability.
ADDITIONAL ROLLER BEARING ON MAINSHAFT (MG9)
To reduce main shaft bending under high torque an output shaft bearing was added in the rear housing tail shaft.
FIXED CONSTANT VELOCITY OUTPUT FLANGE (MG9)
The 3 lobed fixed yoke was revised to a constant velocity flange to allow for packaging of a new short throw shift lever assembly. The flange profile was optimized for strength and reduced weight which reduces imbalance.
NEW INNER REAR EXTENSION SEAL (MH3)
All 2009 Corvette applications of the TR6060 (MM6/MZ6/MH3) have a new inner extension seal (mainshaft). This seal is more robust and eliminates weep-hole leaks.
INTEGRATED BELL HOUSING AND ADAPTOR PLATE (MG9)
The two piece bell and adapter housing was replaced by a one piece assembly with increased rib structure and integrated oil pump housing. The integrated bell is stiffer, has reduced flex and increased durability. The new pump increases oil flow and improves cooling during high-load conditions. Additional air vents were added on top and below the integrated housing to increase airflow and reduce clutch temperatures.
LOW MAINTENANCE
The 6-speed uses Texaco ATF Type III 1863 fluid and is certified "fill-for-life," requiring no fluid changes. The clutch is activated hydraulically, which automatically compensates for clutch disc wear, eliminating manual adjustments. The Tremec TR6060 six-speed has evolved into a design that requires virtually no maintenance in all but the most severe conditions.
OVERVIEW
Both the Corvette ZR1 and the CTSv use the TR6060 designated as MH3 and MG9, respectively. The MH3 is validated to 620 lb-ft of torque, while the MG9 is validated to 560 lb-ft of torque.
Design features include a combination of double-cone and triple-cone synchronizers on all gears. Synchronizers act like clutches to speed up or slow down a gear that is being shifted to. Double-cone synchronizers have two friction surfaces to effect this gear acceleration, and triple-cone synchronizers have three friction surfaces. The greater the friction surface, the easier the transmission is to shift. In addition, double-cone and triple-cone synchronizers are smaller in diameter than a single-cone synchronizer with the same friction area allowing the transmission to remain more compact. Bearings in place of bushings lower the friction of the shift rail movements for the Corvette and CTsv, making the shifter feel naturally lighter and more direct.
2009 Tremec TR6060 (MH3/MG9) car transmission
2009 Model Year Summary
Tremec TR6060 six-speed manual car transmission
• New gear ratios
• Longer transmission inlet tube
• New input shaft (MG9)
• Trans pump added (MG9)
• High strength output shaft
• High strength rear housing (MG9)
• Additional roller bearing on mainshaft (MG9)
• Fixed constant velocity output flange (MG9)
• New inner rear extension seal (MH3)
• Integrated bell housing and adaptor plate (MG9)
FULL DESCRIPTION OF NEW AND UPDATED FEATURES
NEW GEAR RATIOS
A new close ratio set was introduced for the MH3 ratio. First gear is 2.29:1 while sixth gear is 0.68:1. The MG9 gear set is also new. First gear is 2.66:1 with a sixth gear ratio of 0.63:1. These new gear sets were created to ensure torque capacity as well as meeting program fuel economy and performance requirements.
LONGER TRANSMISSION INLET TUBE
The transmission pump inlet tube was increased in length by 115mm for all 2009 model year applications using a pump. This change improved the performance of the transmission cooling pump in high fore/aft and lateral accelerations.
NEW INPUT SHAFT (MG9)
The transmission input shaft spline was revised for assembly within the new Luk Dual mass flywheel. The input shaft tip journal length was increased to provide more overlap to the crankshaft pilot bearing inner race.
FLUID PUMP INTEGRATED INTO FRONT BELL HOUSING (MG9)
The fluid pump used on the higher-performance Z51 option and Z06 model is now integrated into the front case adaptor of the transmission housing. The re-design of the adaptor allowed it to be made stiffer, reducing flex and increasing durability. The new pump also has a significantly increased flow, aiding cooling during high-load conditions.
HIGH STRENGTH OUTPUT SHAFT
The output shaft is fabricated from SAE 8625 steel for improved strength. The shaft has revised grooves for stronger split washers and revised end diameter for tail shaft bearing support.
HIGH STRENGTH REAR HOUSING (MG9)
The rear housing is revised by adding internal and external ribs and relocating a solenoid to reduce stress and improve durability.
ADDITIONAL ROLLER BEARING ON MAINSHAFT (MG9)
To reduce main shaft bending under high torque an output shaft bearing was added in the rear housing tail shaft.
FIXED CONSTANT VELOCITY OUTPUT FLANGE (MG9)
The 3 lobed fixed yoke was revised to a constant velocity flange to allow for packaging of a new short throw shift lever assembly. The flange profile was optimized for strength and reduced weight which reduces imbalance.
NEW INNER REAR EXTENSION SEAL (MH3)
All 2009 Corvette applications of the TR6060 (MM6/MZ6/MH3) have a new inner extension seal (mainshaft). This seal is more robust and eliminates weep-hole leaks.
INTEGRATED BELL HOUSING AND ADAPTOR PLATE (MG9)
The two piece bell and adapter housing was replaced by a one piece assembly with increased rib structure and integrated oil pump housing. The integrated bell is stiffer, has reduced flex and increased durability. The new pump increases oil flow and improves cooling during high-load conditions. Additional air vents were added on top and below the integrated housing to increase airflow and reduce clutch temperatures.
LOW MAINTENANCE
The 6-speed uses Texaco ATF Type III 1863 fluid and is certified "fill-for-life," requiring no fluid changes. The clutch is activated hydraulically, which automatically compensates for clutch disc wear, eliminating manual adjustments. The Tremec TR6060 six-speed has evolved into a design that requires virtually no maintenance in all but the most severe conditions.
OVERVIEW
Both the Corvette ZR1 and the CTSv use the TR6060 designated as MH3 and MG9, respectively. The MH3 is validated to 620 lb-ft of torque, while the MG9 is validated to 560 lb-ft of torque.
Design features include a combination of double-cone and triple-cone synchronizers on all gears. Synchronizers act like clutches to speed up or slow down a gear that is being shifted to. Double-cone synchronizers have two friction surfaces to effect this gear acceleration, and triple-cone synchronizers have three friction surfaces. The greater the friction surface, the easier the transmission is to shift. In addition, double-cone and triple-cone synchronizers are smaller in diameter than a single-cone synchronizer with the same friction area allowing the transmission to remain more compact. Bearings in place of bushings lower the friction of the shift rail movements for the Corvette and CTsv, making the shifter feel naturally lighter and more direct.
