Impractical or a potential?

The new Corvette transaxles look to be pretty sturdy and the DCT will shift very quickly.


Possible to get one to work outside of a vette though...that I don't know.

Thoughts?
 

Brian Kissel

Staff member
Moderator
Lifetime Supporter
Throw enough money at a project, and anything is possible. However not necessarily practical. Any current transaxles with failures, GM is requiring them to be replaced and sent back. The massive amount of electronics required to make this a "crate" drop in would be interesting to say the least. It is a big unit also. And, the cars I have seen wrecked and auctioned off have went for big dollars.
Just my thoughts, others may have much different opinions.

Regards Brian
 
Throw enough money at a project, and anything is possible. However not necessarily practical. Any current transaxles with failures, GM is requiring them to be replaced and sent back. The massive amount of electronics required to make this a "crate" drop in would be interesting to say the least. It is a big unit also. And, the cars I have seen wrecked and auctioned off have went for big dollars.
Just my thoughts, others may have much different opinions.

Regards Brian
Didnt some of the early Ricardos become available to the kit car industry thru a similar chain of events, warranty replacement etc.
 

Brian Kissel

Staff member
Moderator
Lifetime Supporter
Sure did Jac. I have a couple of them. There were some early issues with them. Some of the cash heavy customers purchased a spare just in case. That is how I purchased one of mine from a fellow forum member. I then sent it to one of the certified Ricardo specialists here in the US, to tear it down and check for any issues. One of the problems was a random misalignment laser welder that didn't properly align when welding a gear to a hub. Then when down shifting the gear would separate from the shaft.The difference is they do not require all the electronics and sensors to work. I will have one of the Corvette DCT's also. I have a deposit on the upcoming Z06, and also the rumored upcoming 1000+ hp AWD Zora. My deposit on the Zora was made in August of 2019, as a rumored 2023 car. With Covid, the strike, and supply issues it is rumored to be a 2026. I sure as hell hope I live that long :)!!!!!!

Regards Brian
 
I have been told my someone who knows people at GM that getting that transmission to work out of the original vehicle would be very difficult or impossible. It would at least have to be paired with the original engine and a lot of electronic engineering done to make it work without all the inputs from various sources that it gets when in the 'Vette.
 

Bill Kearley

Supporter
It's just a mater of time before GM has a package over the parts counter. Or the after market industry will dissect one and market a control kit.
 

Larry L.

Lifetime Supporter
It's just a mater of time before GM has a package over the parts counter. Or the after market industry will dissect one and market a control kit.
Perhaps not if the rumors of G.M. going back to the front engine configuration in the 'Vette actually materialize.
 

Chris Kouba

Supporter
Perhaps not if the rumors of G.M. going back to the front engine configuration in the 'Vette actually materialize.
Well damn, that was quick. I was hoping there'd be a little more life in it than a one and done. Will the C8 now become the red-headed stepchild? I hope not.
 

Larry L.

Lifetime Supporter
Well damn, that was quick. I was hoping there'd be a little more life in it than a one and done. Will the C8 now become the red-headed stepchild? I hope not.
So was I.
Link follows.
I dunno just how 'in-the-know' "carbuzz" is ('never heard of 'em myself), but that's what they're saying. So are a couple others.
"Buzz" seems to be stating it will definitely happen...but, who really knows at this point.

'Can't see G.M. doing, as you stated, a "one and done". At the very least, one would think it'd be a lot cheaper to simply address whatever issues the C-8 might have than to create a whole new car...buuuuut, what th' heck do I know.

.
 

Joel K

Supporter
So was I.
Link follows.
I dunno just how 'in-the-know' "carbuzz" is ('never heard of 'em myself), but that's what they're saying. So are a couple others.
"Buzz" seems to be stating it will definitely happen...but, who really knows at this point.

'Can't see G.M. doing, as you stated, a "one and done". At the very least, one would think it'd be a lot cheaper to simply address whatever issues the C-8 might have than to create a whole new car...buuuuut, what th' heck do I know.

.
Look at the date of that article, April fools! :)
 

Larry L.

Lifetime Supporter
Well, I'll be darned!
THE SMALL PRINT strikes again!
I saw this about a week ago, so it never dawned on me to check for the date.
Skuze me while I go clean the EGG off my face... :rolleyes:
 

Brian Kissel

Staff member
Moderator
Lifetime Supporter
If I remember correctly I read where the DCT weighs something like 365 ponds. I'll have to look for my source on that.

Regards Brian
 

Brian Kissel

Staff member
Moderator
Lifetime Supporter
Well, I was RONG, per this pdf it is 331.8 plus the weight of the extra 2 quarts of oil for track use.

TR-9080.DCT_product.sheet.pdf
 

Brian Kissel

Staff member
Moderator
Lifetime Supporter
TREMEC TR-9080 DCT
8-Speed Dual Clutch Transmission for Transaxle Applications
Designed for high-performance sports cars and super cars, the new 8-speed TR-9080 DCT is the first transaxle application from TREMEC that combines the transmission, differential and axle drive in one compact package.
Performance
With an automated dual clutch transmission (DCT), engine output is coupled to either of two transmission input shafts. Each clutch functions as both a launch clutch and dynamic shifting clutch, enabling clutch-to-clutch shifts without torque interruption, giving the driver continuous transmission of torque and power to the wheel.
The bespoke TR-9080 DCT provides lightning-fast shifts in less than 100 milliseconds from best-in-class controls software, solenoids and hydraulics.
Control Solutions
The DCT is controlled with a high-performance, 32-bit transmission control unit. All systems - including hardware such as low-leak solenoid valves and electro-hydraulic actuation systems to control systems and software - were internally developed by TREMEC for maximum performance.
To create the optimal performance during launch and shifting, TREMEC developed advanced algorithms capable of calculating torque targets in real time. Fast and repeatable torque control is achieved through model-based control strategies, using detailed knowledge and characterization of all transmission subsystems and components.
Mechanical Design
The in-house designed concentric wet dual clutch offers high torque and thermal capacity in a compact package. This innovative wet clutch has TREMEC-proprietary optimized friction materials with the ability to cool the clutches only when needed, boosting efficiency.
TREMEC’s vertically integrated manufacturing allows customized gear design and development for tight tolerances and famously robust durability. Power-honed synchro/speed gears give a quiet ride without sacrificing performance.
The TREMEC-designed limited slip differentials feature spiral bevel designs that allow the entire transaxle to use a single fluid, allowing mass savings from a single oil cooler, pump, oil sump and filtration system. The force-cooled electro-hydraulically controlled limited slip differential (eLSD) is integrated with the transmission control system to allow fast responsiveness and fine control of the locking ratio and provides the ability to withstand sustained high-performance driving.
Features at a Glance:
• Continuous torque over a wide ratio range allowing high performance driving and efficient highway driving
• Concentric wet dual clutch arrangement
• Over-torque shifting with torque boost for performance launch
• Offered with mechanical limited slip differential (mLSD) or electronic
limited slip differentials (eLSD)
• ISO 26262 and ASIL-D safety standards compliant
46643 Ryan Court | Novi, MI 48377 U.S.A. | www.tremec.com Copyright © 2020 TREMEC. All Rights Reserved. F-TR-9080.DCT-01.20
®
Torque Transfer Solutions®

TREMEC TR-9080 DCT
8-Speed Dual-Clutch Transmission for Transaxle Applications
®
Torque Transfer Solutions®
TREMEC TR-9080 DCT Specifications
Clutch Architecture
Wet dual clutch; two normally open concentric clutches opened by springs, closed by hydraulic pressure on rotating pistons. Centrifugal compensation for each clutch.
Housings
SAE 306 die cast aluminum
Final Drive
Final drive is integrated into gearbox. Available with mechanical limited slip differential (mLSD) - standard, or electronic limited slip differential (eLSD) - optional. Common ring and pinion gear ratio for both differential types. Effective final drive ratio accomplished via different transfer gear ratios.
Overall Length
713.8 mm (28.1 in)
Axle Centerline to Front Face
175.0 mm (6.9 in)
Weight
Dry
mLSD: 139.2 kg (306.9 lb)
eLSD: 141.1 kg (311.1 lb)
Filled (11 l oil) 148.5 kg (327.4 lb) 150.5 kg (331.8 lb)
Fluid
FUCHS Titan EG FFL-4 Double Clutch Transmission Fluid for TREMEC. Common fluid for entire unit - differential, clutch, controls and gearbox. 11 liter fill volume; additional 2 liter recommended for extended track use.
Gear Ratios:
Electronic Limited Slip Differential (eLSD)
Gear
Gear Ratio
Final Drive Ratio
Transfer Gear Ratio
Ring and Pinion Ratio
1
2.91
5.2:1
1.46
3.55:1
2
1.76
3
1.22
4
0.88
5
0.65
6
0.51
7
0.40
8
0.33
R
2.63
Gear Ratios:
Mechanical Limited Slip Differential (mLSD)
Gear
Gear Ratio
Final Drive Ratio
Transfer Gear Ratio
Ring and Pinion Ratio
1
2.91
4.9:1
1.38
3.55:1
2
1.76
3
1.22
4
0.88
5
0.65
6
0.51
7
0.40
8
0.33
R
2.63
Configuration
Eight-speed dual clutch transmission with limited slip differential. Short hydraulic circuits and direct acting solenoids for extremely fast shifts. Controls software with custom driving modes for driving style adaptation.
46643 Ryan Court | Novi, MI 48377 U.S.A. | www.tremec.com
Copyright © 2020 TREMEC. All Rights Reserved. Subject to design and/or appearance modifications that are production standards at the time of shipment. F-9080.DCT_01.20
 
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