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The 2020 370z needs a DCT

At least, that's what I have been thinking. Someone asked me if I planned to pick up a new Supra. I replied that it is pretty redundant if I have

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Old 01-15-2020, 10:00 PM   #1 (permalink)
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Default The 2020 370z needs a DCT

At least, that's what I have been thinking. Someone asked me if I planned to pick up a new Supra. I replied that it is pretty redundant if I have a twin turbo 370z, aside from the Supra having a transmission that produces RESULTS. Results that a platform needs to encourage big projects and developments.

I cant change the past, but I can bring the 370z performance up to this decade without relying on Nissan to give me an all new car.

In November, I picked up a 7-speed DCT Getrag. Its from a 2015 BMW that was totaled with 1700 miles on it.



I bought some stock 370z 7AT shifter paddles from ebay, and the steering column lower cover.



First I started with some basic 3D scans of the engine block and transmission.



Then I put the block in the CNC and triple checked some critical coordinates. I also got some 3rd party high precision CMM coordinates off the transmission.

Ive spent a lot of time in CAD, and came up with an adapter plate design that will work if I have a custom flywheel made to my design.



The adapter design is nearly done, I am just going to refine the starter area a little more casually in my free time as I wait for the first 2 custom flywheels to be produced. Today I bought the 2 pieces of billet to build a pair of adapter plates (one for Seb at SpecialtyZ, and one for me).

Once the flywheels arrive, we will put this on the back of my engine and build the transmission mount. Then of course the driveshaft will need to be sorted, along with a whole bunch of wiring and electronics. We are working with someone who is experienced building controllers for these transmissions, and we are confident that we will be able to make this work in harmony with ECUTEK.

The flywheel is *the* speed bump right now. Once they land, we are back in control of the timeline. There is currently no ETA.

Its a little premature to post about this. But its all I can do for now while I twiddle my thumbs and wait.
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Last edited by phunk; 03-10-2020 at 12:00 AM.
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Old 01-15-2020, 10:10 PM   #2 (permalink)
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[QUOTE=phunk;3900922]At least, that's what I have been thinking. Someone asked me if I planned to pick up a new Supra. I replied that it is pretty redundant if I have a twin turbo 370z, aside from the Supra having a transmission that produces RESULTS. Results that a platform needs to encourage big projects and developments.

I cant change the past, but I can bring the 370z performance up to this decade without relying on Nissan to give me an all new car.

In November, I picked up a 7-speed DCT Getrag. Its from a 2015 BMW that was totaled with 1700 miles on it.





I bought some stock 370z 7AT shifter paddles from ebay, and the steering column lower cover.





First I started with some basic 3D scans of the engine block and transmission.





Then I put the block in the CNC and triple checked some critical coordinates. I also got some 3rd party high precision CMM coordinates off the transmission.

Ive spent a lot of time in CAD, and came up with an adapter plate design that will work if I have a custom flywheel made to my design.







The adapter design is nearly done, I am just going to refine the starter area a little more casually in my free time as I wait for the first 2 custom flywheels to be produced. Today I bought the 2 pieces of billet to build a pair of adapter plates (one for Seb at SpecialtyZ, and one for me).

Once the flywheels arrive, we will put this on the back of my engine and build the transmission mount. Then of course the driveshaft will need to be sorted, along with a whole bunch of wiring and electronics. We are working with someone who is experienced building controllers for these transmissions, and we are confident that we will be able to make this work in harmony with ECUTEK.

The flywheel is *the* speed bump right now. Once they land, we are back in control of the timeline. There is currently no ETA.

Its a little premature to post about this. But its all I can do for now while I twiddle my thumbs and

When is the timeline and cost of a swap like this
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Last edited by Elmo370z; 01-15-2020 at 10:31 PM.
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Old 01-15-2020, 10:13 PM   #3 (permalink)
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Originally Posted by Elmo370z View Post
Thought this wasn’t going to come out the bag anytime soon.
Thought you know better than to quote long posts with photos. Its not out of the bag yet, not posted to social media. Exclusive to this group.

EDIT nevermind I fixed it for ya by breaking your links.
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Last edited by phunk; 01-15-2020 at 10:20 PM.
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Old 01-15-2020, 10:29 PM   #4 (permalink)
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This will be interesting for sure. Cool project.
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Old 01-16-2020, 12:22 AM   #5 (permalink)
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I always thought one of the biggest let down for the Z, G, and current Q cars is the 7at. Even with updates in gear switch programming, it’s just no match for modern AT like the ZF 8 sp, let alone the dual clutch boxes. This will be interesting
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Old 01-16-2020, 12:47 AM   #6 (permalink)
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Quote:
Originally Posted by phunk View Post
At least, that's what I have been thinking. Someone asked me if I planned to pick up a new Supra. I replied that it is pretty redundant if I have a twin turbo 370z, aside from the Supra having a transmission that produces RESULTS. Results that a platform needs to encourage big projects and developments.

I cant change the past, but I can bring the 370z performance up to this decade without relying on Nissan to give me an all new car.

In November, I picked up a 7-speed DCT Getrag. Its from a 2015 BMW that was totaled with 1700 miles on it.





I bought some stock 370z 7AT shifter paddles from ebay, and the steering column lower cover.





First I started with some basic 3D scans of the engine block and transmission.





Then I put the block in the CNC and triple checked some critical coordinates. I also got some 3rd party high precision CMM coordinates off the transmission.

Ive spent a lot of time in CAD, and came up with an adapter plate design that will work if I have a custom flywheel made to my design.







The adapter design is nearly done, I am just going to refine the starter area a little more casually in my free time as I wait for the first 2 custom flywheels to be produced. Today I bought the 2 pieces of billet to build a pair of adapter plates (one for Seb at SpecialtyZ, and one for me).

Once the flywheels arrive, we will put this on the back of my engine and build the transmission mount. Then of course the driveshaft will need to be sorted, along with a whole bunch of wiring and electronics. We are working with someone who is experienced building controllers for these transmissions, and we are confident that we will be able to make this work in harmony with ECUTEK.

The flywheel is *the* speed bump right now. Once they land, we are back in control of the timeline. There is currently no ETA.

Its a little premature to post about this. But its all I can do for now while I twiddle my thumbs and wait.
Very nice Charles for considering keeping pushing the envelope! Looks promising! Haven't had time to do research on your ideas, but some folks here are worrying about the big torque of our TT systems will kill the DCT. How about the 8spd ZF trans? (such as the most recent products for BMW, ALFA, and Chevrolet....

https://en.wikipedia.org/wiki/ZF_8HP_transmission
)
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Old 01-16-2020, 01:31 AM   #7 (permalink)
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These transmissions come from turbo 6 cylinders that make every bit as much torque as a VQ. The transmission in stock form should work very well for any reasonable long term stock engine power. For bigger power, the clutches can be upgraded (easy to do yourself) for about the same cost as a triple clutch for a VQ. It’s a very strong transmission, people are installing them even to twin turbo v8s. I believe we found the perfect trans for the VQ.
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Old 01-16-2020, 01:34 AM   #8 (permalink)
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Quote:
Originally Posted by phunk View Post
These transmissions come from turbo 6 cylinders that make every bit as much torque as a VQ. The transmission in stock form should work very well for any reasonable long term stock engine power. For bigger power, the clutches can be upgraded (easy to do yourself) for about the same cost as a triple clutch for a VQ. Itís a very strong transmission, people are installing them even to twin turbo v8s. I believe we found the perfect trans for the VQ.
Anyway almost 99 percent of the owners here are running auto. I'm sure your work will attract considerable attention if it eventually comes true.
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Old 01-16-2020, 01:48 AM   #9 (permalink)
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I am not sure yet if we will tackle the integration to auto cars. That will require a lot of research but I predict there will be a whole lot greater challenge for that application due to greater complexity of having a TCM. We will see first how it goes in the much more simple 6MT test cars.
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Old 01-16-2020, 01:54 AM   #10 (permalink)
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Originally Posted by phunk View Post
I am not sure yet if we will tackle the integration to auto cars. That will require a lot of research but I predict there will be a whole lot greater challenge for that application due to greater complexity of having a TCM. We will see first how it goes in the much more simple 6MT test cars.
You know... auto is weaker for boosted Z, which means bigger market out there
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Old 01-16-2020, 02:03 AM   #11 (permalink)
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You could help with the r&d!!

Remove your automatic and install a manual trans and clutch pedal. Let me know if the car moves and what quirks / DTCs etc you find
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Old 01-16-2020, 02:09 AM   #12 (permalink)
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Originally Posted by phunk View Post
You could help with the r&d!!

Remove your automatic and install a manual trans and clutch pedal. Let me know if the car moves and what quirks / DTCs etc you find
Just did rebuild with a local builder to save my auto. Haven't had chance to install a manual but I'll try talking with my friend who's having a manual swapping Z. If I get something helpful I'll pm you ))
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Old 01-16-2020, 07:09 AM   #13 (permalink)
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This is awesome. Subbed!
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Old 01-16-2020, 07:20 AM   #14 (permalink)
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CJM at it again

I'd hate to even think of giving up my MT


But damn... I would for this
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Old 01-16-2020, 08:45 AM   #15 (permalink)
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CJM at it again

I'd hate to even think of giving up my MT


But damn... I would for this
If you make enough TQ, the manual trans will need to be upgraded. Breaking input shafts on a MT is more common than you think. Do that a couple of times and you will have paid for this. Sequential trannies are expensive. 25K or so.
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