World's First 2JZ with M4 DCT Swapped E30

[It's Soda Not Pop]

The way you handle the clutch is basically the same thing that Koenigsegg does in that new CC850 with their "LST" or Light Speed Transmission.
They use clutch plates on the gears themselves rather than on a flywheel, and it's got three shafts instead of the usual two and overall adds up to 9 gears.

The way it works is whatever ratio you're going for, at any time two sets of gears are engaged by their clutch packs, except in reverse but yeah.

Anyway, so they just made this whole shift "linkage" and a dummy clutch pedal on this new car to simulate a manual transmission.
The clutch pedal disengages the trans, but as you push the shift lever the car knows which "gear" the shifter is going to. So it knows the ratio you're going for and which gears need to be engaged.
So as you push the shifter the first of the two clutch packs engages but it waits for you to drop the clutch pedal to release the second clutch pack and then you're in gear and driving!

I went into too much detail didn't I?

Anyway I just thought it was cool how you handle the clutch and reminded me of that. Cool project!
I hate that valve cover though.

That makes a lot of sense.

[AusScare]

So right now we have a stock set.
I have some oldschool CA Tuned "chrimoly" axles as a backup set when these break.
Once those are done, I will be using some adapters on the wheel hub that allow the use of E34 axles. Have heard good things on that conversion, so hoping that keeps me from having to do a 210mm and 5lug swap.

For the record, my last 2JZ E30 with a 5speed went 10.90@136 on stock axles, still 4lug. I think we will get a pretty easy 9sec pass out of the stock stuff if I back half the track

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I have those same CATuned axles, but no motor in yet to test if they are any good. Crazy that you had stock axes going10.9! That gives me hope. What's the secret to keeping them alive, just don't do anything stupid? All new suspension/bushings?

[hozzziii]

The way you handle the clutch is basically the same thing that Koenigsegg does in that new CC850 with their "LST" or Light Speed Transmission.
They use clutch plates on the gears themselves rather than on a flywheel, and it's got three shafts instead of the usual two and overall adds up to 9 gears.

The way it works is whatever ratio you're going for, at any time two sets of gears are engaged by their clutch packs, except in reverse but yeah.

Anyway, so they just made this whole shift "linkage" and a dummy clutch pedal on this new car to simulate a manual transmission.
The clutch pedal disengages the trans, but as you push the shift lever the car knows which "gear" the shifter is going to. So it knows the ratio you're going for and which gears need to be engaged.
So as you push the shifter the first of the two clutch packs engages but it waits for you to drop the clutch pedal to release the second clutch pack and then you're in gear and driving!

I went into too much detail didn't I?

Anyway I just thought it was cool how you handle the clutch and reminded me of that. Cool project!
I hate that valve cover though.

[SLEEPYDUB]

Did I miss which axles you're running? Keen to see what you think will handle the punishment!

So right now we have a stock set.
I have some oldschool CA Tuned "chrimoly" axles as a backup set when these break.
Once those are done, I will be using some adapters on the wheel hub that allow the use of E34 axles. Have heard good things on that conversion, so hoping that keeps me from having to do a 210mm and 5lug swap.

For the record, my last 2JZ E30 with a 5speed went 10.90@136 on stock axles, still 4lug. I think we will get a pretty easy 9sec pass out of the stock stuff if I back half the track

Sent from my SM-N986U using Tapatalk

[SLEEPYDUB]

I never thought about a DCT being able to have a clutch. I know it's not a traditional clutch like most manual cars are. Does this work similar to the modern brakes on BMW's? As in it's basically a button you press with your foot and the computer (for lack of a name for the component) decides how much pressure to apply based on your input.

In a sense yes that's how it will work. It wasn't ever designed to do this from the factory, but we can manipulate the mechatronics to perform this task.

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[AusScare]

Did I miss which axles you're running? Keen to see what you think will handle the punishment!

[It's Soda Not Pop]

Pedal box space is fine, it still has stock pedals. The transmission tunnel comes over to the accelerator just a hair more. It has not impeded on functionality yet.

DCT is the Dual Clutch Transmission from the M4. It is essentially a 7 speed manual transmission that is electronically controlled. It is the fastest shifting transmission on the planet. The floor shifter is just an up and down function. You can long hold the up or down to get into different modes, but we will be using a Blink Marine CANBUS keypad to select a transmission mode. We will be able to select, Park, Reverse, Drive, Manual Mode, Etc with the keypad. The paddle shifters are just another shifter option so I dont have to take my hands off the wheel when drifting or racing.

The clutch pedal is still fully functional, however it is not using a master cylinder, rather a shock travel sensor that uses a 0-5v signal to the transmission controller to tell it when to release the clutch and re-engage it. This is for clutch kicking, and launches. This is so that I can still use a clutch IF I need it. I can put it in Drive and just let it shift, or I can manually shift it. There are all kinds of options. They hydro handbrake will have a pressure sensor on it, so that when it senses pressure, it disengages the clutch.

Pretty cool technology to cram into an E30. I'm hoping to bring modern tech into a classic chassis, and put my own personal styling touch on it. Should definitely be unique.

I never thought about a DCT being able to have a clutch. I know it's not a traditional clutch like most manual cars are. Does this work similar to the modern brakes on BMW's? As in it's basically a button you press with your foot and the computer (for lack of a name for the component) decides how much pressure to apply based on your input.

[SLEEPYDUB]

Ah okay, so the paddle shifters and floor shifter are functionally the same. You can just use either depending on what you feel like.

I didn't realize there was a clutch pedal with the M4 DCT. Does it come that way in the M4 from factory?
Can you actually modulate/slip the clutch like you would with a regular manual box?

Not having a user-operated clutch is one thing that I hate about a regular auto/DCT box. IMO you give up so much car control without a clutch pedal.


Absolutely, there is something great about forging your own path.
And you'll end up with the best combination of classic & modern to enjoy.

No, the factory cars that use this transmission are not equipped with a clutch. This is a feature that we code into the programming with the HTG Gearbox Control Unit.
Yes, you can modulate the clutch since you have a linear 0-5v travel sensor. You can also code it to gradually release or apply using just a regular momentary switch.
I agree, having a clutch pedal is a must for me. This was a requirement when choosing a transmission. I just so happen to have the best of both worlds this way.

[Panici]

The floor shifter is just an up and down function. The paddle shifters are just another shifter option so I dont have to take my hands off the wheel when drifting or racing.

The clutch pedal is still fully functional, however it is not using a master cylinder, rather a shock travel sensor that uses a 0-5v signal to the transmission controller to tell it when to release the clutch and re-engage it. This is for clutch kicking, and launches. This is so that I can still use a clutch IF I need it.

Ah okay, so the paddle shifters and floor shifter are functionally the same. You can just use either depending on what you feel like.

I didn't realize there was a clutch pedal with the M4 DCT. Does it come that way in the M4 from factory?
Can you actually modulate/slip the clutch like you would with a regular manual box?

Not having a user-operated clutch is one thing that I hate about a regular auto/DCT box. IMO you give up so much car control without a clutch pedal.

Pretty cool technology to cram into an E30. I'm hoping to bring modern tech into a classic chassis, and put my own personal styling touch on it. Should definitely be unique.

Absolutely, there is something great about forging your own path.
And you'll end up with the best combination of classic & modern to enjoy.

[SLEEPYDUB]

Looking good! Love the troll BMW valve cover.
That transmission is massive, good job with the custom trans tunnel.
How is the pedalbox space?

I don't know anything about a DCT, what is up with the floor mount shifter in addition to the paddle shift?
My guess is that the floor shifter would be a mechanical connection to the trans and the paddles are air shift?

Pedal box space is fine, it still has stock pedals. The transmission tunnel comes over to the accelerator just a hair more. It has not impeded on functionality yet.

DCT is the Dual Clutch Transmission from the M4. It is essentially a 7 speed manual transmission that is electronically controlled. It is the fastest shifting transmission on the planet. The floor shifter is just an up and down function. You can long hold the up or down to get into different modes, but we will be using a Blink Marine CANBUS keypad to select a transmission mode. We will be able to select, Park, Reverse, Drive, Manual Mode, Etc with the keypad. The paddle shifters are just another shifter option so I dont have to take my hands off the wheel when drifting or racing.

The clutch pedal is still fully functional, however it is not using a master cylinder, rather a shock travel sensor that uses a 0-5v signal to the transmission controller to tell it when to release the clutch and re-engage it. This is for clutch kicking, and launches. This is so that I can still use a clutch IF I need it. I can put it in Drive and just let it shift, or I can manually shift it. There are all kinds of options. They hydro handbrake will have a pressure sensor on it, so that when it senses pressure, it disengages the clutch.

Pretty cool technology to cram into an E30. I'm hoping to bring modern tech into a classic chassis, and put my own personal styling touch on it. Should definitely be unique.

[SLEEPYDUB]

Looks great!

What treadstone intercooler is that? Looks like it fits really well for an "under the headlights" piping setup

I can't remember the name of exact version, I think I mention it somewhere in one of the videos for the intercooler install.
I just measured as closely as I could and got it pretty spot on. It did however require a lot of trimming to get the bumper to fit around it. It is within a few mm of touching everywhere lol.

[Panici]

Looking good! Love the troll BMW valve cover.
That transmission is massive, good job with the custom trans tunnel.
How is the pedalbox space?

I don't know anything about a DCT, what is up with the floor mount shifter in addition to the paddle shift?
My guess is that the floor shifter would be a mechanical connection to the trans and the paddles are air shift?

[Northern]

Looks great!

What treadstone intercooler is that? Looks like it fits really well for an "under the headlights" piping setup

[AusScare]

Nice build, looks like a ton of work!

[It's Soda Not Pop]

IA is Import Alliance in Atlanta. But the ones I listed are a good start. I use facebook to find events. Again awesome build man.