5 Speed upgrades MU3
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Joined: 04-01-09
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From: causapscal, qc
Beside ZZP prototype work, and the mega expensive quaife gear set, nothing exist for that gearbox. What we need is a cheap upgrade, something like a shep trans upgrade from the dsm/evo world. IIRC, I think that someone contacted Shepherd a while ago and he didn't had any interest in developing something for our cars.
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Joined: 02-09-09
Posts: 4,374
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From: Tejas
Beside ZZP prototype work, and the mega expensive quaife gear set, nothing exist for that gearbox. What we need is a cheap upgrade, something like a shep trans upgrade from the dsm/evo world. IIRC, I think that someone contacted Shepherd a while ago and he didn't had any interest in developing something for our cars.
Out of curiousity, what tranny does the non-SS manual Cobalt have? Besides what I think is considered the XFE, only the SS has the manual tranny, and not that many SSs were made in the grand scheme of things. If the XFE had the same transmission, then that would help the numbers and make it more worthwhile to a company, but then again there's no reason an XFE would need a stronger tranny I wouldn't think.
I just wouldnt cryo the case. But I have a friend that works in a machine shop and they have a 5 axis CNC machine. I wonder what it would take to have like a gearset made. Also what else would need to be made stronger.
Well the sliders and syncros and shift levers look like they came out of a lawnmower. My 5th gear parts looked like lathe shavings. The gears look fine. Everything else looks like ****
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Joined: 12-05-09
Posts: 268
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From: Houston, Texas
What about cryo-ing it? lol Beat me to it. ^
Out of curiousity, what tranny does the non-SS manual Cobalt have? Besides what I think is considered the XFE, only the SS has the manual tranny, and not that many SSs were made in the grand scheme of things. If the XFE had the same transmission, then that would help the numbers and make it more worthwhile to a company, but then again there's no reason an XFE would need a stronger tranny I wouldn't think.
Out of curiousity, what tranny does the non-SS manual Cobalt have? Besides what I think is considered the XFE, only the SS has the manual tranny, and not that many SSs were made in the grand scheme of things. If the XFE had the same transmission, then that would help the numbers and make it more worthwhile to a company, but then again there's no reason an XFE would need a stronger tranny I wouldn't think.
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Joined: 10-14-09
Posts: 2,279
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From: New Port Richey, Florida
What about cryo-ing it? lol Beat me to it. ^
Out of curiousity, what tranny does the non-SS manual Cobalt have? Besides what I think is considered the XFE, only the SS has the manual tranny, and not that many SSs were made in the grand scheme of things. If the XFE had the same transmission, then that would help the numbers and make it more worthwhile to a company, but then again there's no reason an XFE would need a stronger tranny I wouldn't think.
Out of curiousity, what tranny does the non-SS manual Cobalt have? Besides what I think is considered the XFE, only the SS has the manual tranny, and not that many SSs were made in the grand scheme of things. If the XFE had the same transmission, then that would help the numbers and make it more worthwhile to a company, but then again there's no reason an XFE would need a stronger tranny I wouldn't think.
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Joined: 02-09-09
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From: Tejas
Does non-SS manual Cobalt = XFE? If not, what are the differences? I've often wondered.
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Joined: 03-30-06
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From: Chandler, AZ
I think the XFE model also has a different final drive compared to the 5-speeds before it, but otherwise the same gearbox. Also, final drive is different between LSJ and LNF cars, but again the transmission is the same between the two.
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From: New Port Richey, Florida
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Joined: 08-02-05
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From: Adams, MA
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Joined: 10-14-09
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From: New Port Richey, Florida
WOW !!! I found the deal of the century on the net. Bought a new 2009 MU3 trans for $900 shipped. Im getting ready to jack off right now. Paid thru Paypal and the guy is originally from Turtle Creek area who has a parts business in Florida. Ill post his info later.
Paid thru Paypal and the guy is originally from Turtle Creek area who has a parts business in Florida. Ill post his info later.
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Joined: 08-02-05
Posts: 227
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From: Adams, MA
f35/mu3 they are the same tranny
F35 (MU3) transmission
From Wikipedia, the free encyclopediaJump to: navigation, search
This article is about an automobile transmission. For other uses, see F35.
The F35 is a Saab-designed five-speed manual transaxle built in Saabs Gothenburg, Sweden, powertrain plant. This extensively tested manual transmission was originally introduced in the 1984 Saab 9000, and today it is used in the Saab 9-3 and 9-5, Chevrolet Cobalt SS, and various GM/Opel transverse engine front-wheel drive applications.
It weighs approximately 99 lb. (45 kg.) and uses 2 quarts of GM 88862472 gear oil. This gear oil is identified in GM documentation as a synthetic 75W-85 GL-4, Castrol Burmah (BOT 0063) manual transmission fluid, and is validated as "fill-for-life". No maintenance is required for normal operation. The gearbox is rated for 260 ft-lb (353 Nm) of engine torque.
The F35 features a two-axis conventional transverse layout, with fully synchronized gears, and compact packaging. It features a higher torque carrying capacity than most manual transaxles currently in use by competing North American small cars.
Different versions of the transaxle are available depending upon the application. Both cable and rod shift mechanisms are available, as well as application-specific clutch housings. The MU3 and MC2 are differentiated by ratios, with the MC2 available with a lower top-gear ratio.
Design features include triple-cone synchronizers on 1st and 2nd gears, and single-cone synchronizers for 3rd, 4th, 5th and reverse gears.
A limited-slip differential is available for high-output applications. GM has sourced Quaife's automatic torque biasing (ATB) torque-sensing (Torsen-style) differential, which is an all-mechanical geared unit that uses no clutch packs or preloading to transfer torque from one axle to the other. The torque transfer occurs automatically and gradually when one wheel loses traction. This type of differential can severely reduce the effects of torque-steer.
MU3 Gear ratios:
Final Drive 1 2 3 4 5 R
3.82 3.38 1.76 1.18 0.89 0.70 3.17
MC2 Gear ratios:
Final Drive 1 2 3 4 5 R
4.05 3.38 1.76 1.18 0.89 0.70 3.17
Applications:
1984 Saab 9000
2004-2007 Saturn ION Red Line (MU3)
2005-2007 Chevrolet Cobalt SS Supercharged (MU3)
2008-2010 Chevrolet Cobalt SS Turbocharged (MU3)
2008-2010 Chevrolet HHR SS Turbocharged (MC2)
Saab 9-3
Saab 9-5
From Wikipedia, the free encyclopediaJump to: navigation, search
This article is about an automobile transmission. For other uses, see F35.
The F35 is a Saab-designed five-speed manual transaxle built in Saabs Gothenburg, Sweden, powertrain plant. This extensively tested manual transmission was originally introduced in the 1984 Saab 9000, and today it is used in the Saab 9-3 and 9-5, Chevrolet Cobalt SS, and various GM/Opel transverse engine front-wheel drive applications.
It weighs approximately 99 lb. (45 kg.) and uses 2 quarts of GM 88862472 gear oil. This gear oil is identified in GM documentation as a synthetic 75W-85 GL-4, Castrol Burmah (BOT 0063) manual transmission fluid, and is validated as "fill-for-life". No maintenance is required for normal operation. The gearbox is rated for 260 ft-lb (353 Nm) of engine torque.
The F35 features a two-axis conventional transverse layout, with fully synchronized gears, and compact packaging. It features a higher torque carrying capacity than most manual transaxles currently in use by competing North American small cars.
Different versions of the transaxle are available depending upon the application. Both cable and rod shift mechanisms are available, as well as application-specific clutch housings. The MU3 and MC2 are differentiated by ratios, with the MC2 available with a lower top-gear ratio.
Design features include triple-cone synchronizers on 1st and 2nd gears, and single-cone synchronizers for 3rd, 4th, 5th and reverse gears.
A limited-slip differential is available for high-output applications. GM has sourced Quaife's automatic torque biasing (ATB) torque-sensing (Torsen-style) differential, which is an all-mechanical geared unit that uses no clutch packs or preloading to transfer torque from one axle to the other. The torque transfer occurs automatically and gradually when one wheel loses traction. This type of differential can severely reduce the effects of torque-steer.
MU3 Gear ratios:
Final Drive 1 2 3 4 5 R
3.82 3.38 1.76 1.18 0.89 0.70 3.17
MC2 Gear ratios:
Final Drive 1 2 3 4 5 R
4.05 3.38 1.76 1.18 0.89 0.70 3.17
Applications:
1984 Saab 9000
2004-2007 Saturn ION Red Line (MU3)
2005-2007 Chevrolet Cobalt SS Supercharged (MU3)
2008-2010 Chevrolet Cobalt SS Turbocharged (MU3)
2008-2010 Chevrolet HHR SS Turbocharged (MC2)
Saab 9-3
Saab 9-5
New Member
Joined: 04-26-10
Posts: 191
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From: Homestead, FL/fredneck, MD
lsd?